PLATE XXL 
. 1,2,3. Goniatites Looneyi. (Looney's Goniatite.) Depressed, glabrous; sides with sigmoidal stria); umbilicus minute; aperture ellip¬ 
tical ; with many septa; dorsal and lateral sinuses double, wide-set. 
l,o. G. Gilbertsoni. (Gilbertson's Goniatite.) Depressed; elliptical; glabrous; sides with greatly bent, minute stria); umbilicus small- 
aperture oblong ; septa many, with round lobes and sinuses ; dorsal sinus double, wide; lateral sinus simple. 
6* 6j*» 7. G. Paucilobus. (Few-lobed Goniatite.) Dejiressed ; sides with waved stria) and shallow undulations ; umbilicus minute ; aperture 
elliptical; lobes and sinuses of all septa round; first lateral one very large. 
8, 8a, 15. G. Discrepans. (Discrepant Goniatite.) Discoidal, smooth; with minute umbilicus; strife doubly undulating; compressed to¬ 
wards ambit; aperture oblong-ovate ; septa many, with double, wide dorsal and lateral sinuses. 
0, 10, 10a. G. Striolatus. (Grooved Goniatite.) Globular; sides with somewhat flattened, broad ambit; with spiral transverse, delicate 
strife ; umbilicus minute ; aperture ovate ; septa with very wide, acute, dorsal sinuses, and lateral lobes widened and rounded. 
G. ObtUSUS. (Obtuse Goniatite .) Sub-globose; sides flattened; slightly transversely striate, with few, longitudinal stria) and 
internal bent, obscure ridges; umbilicus minute; septa delicately marked, undulating; edge of dorsal lobe very short; dorsal sinuses sharp; first 
lateral lobe rounded. 
13,14,14a. G. Nitidus. (Clear Goniatite.) Sub-globose; sides crossed by slightly bent, prominent, furcate, striie and by obsolete, spiral stria); 
umbilicus wide, angular; aperture semi-lunar, transversely elongate; septa irregular, with dorsal lobes simple, small; lateral lobes, acute, large. 
16, 16a, 17. G. Serpentinus. (Serpentine Goniatite.) Discoidal; with three wholly exposed volutions; sides with transverse, delicate, 
bent stniD; aperture nearly circular, slightly indented by preceding volutions; with three approximating, round-lobed septa; two round, lateral 
sinuses and central, acute, dorsal sinus. 
18,18a. G. DiscOPS. (Discordant Goniatite.) Discoidal, smooth; sides with falcate, minute strife; aperture oblong-ovate; septa many, 
with rounded lobes and sinuses ; dorsal sinus wide, double, with simple, lateral sinus. 
19, 20, 20a. G. Cyclolobus. (RouHd-lobed Goniatite.) Discoidal; with three or four half-exposed volutions, sides flattened; ambit broad, 
round ; aperture oblong, its sides flat, rounded, its breadth two-thirds its length; septa with four, rounded, lateral lobes ; small, double, dorsal lobe 
and small, pointed, dorsal sinuses; first lateral sinus double, neat simple, all rounded. 
21,22, 22a. G. Mixolobus. (Mingling-lobed Goniatite.) Discoidal; with five rapidly enlarging volutions, inner ones slightly concealed- 
septa with four, rounded, lateral lobes ; first lateral sinus double, acute; second single, pointed; dorsal lobes and sinuses acute. 
23, 24, 25. G. Gibsoni. (Gibson's Goniatite.) Discoidal; with five, two-thirds concealed volutions, with bent, acute ribs, prominent on 
margin and furcate on sides approaching ambit; without spiral strife, but sides with a few curved constrictions. 
26, 26a, 27. G. Vesica. (Bladder Goniatite.) Sub-globular, umbilicate ; with two volutions, central one minute, outer one very large; um¬ 
bilicus much rounded; sides with transverse, delicate strife; undulations of septa low, rounded-, dorsal sinuses shallow; aperture semi-lunar • 
thickness equal to two-thirds diameter. 
28,29. G. Intercostalis. (Inter-ribbed Goniatite.) Discoidal; with three volutions ; sides crossed by claviform ribs, from inner margin of 
volutions, extending three-fourths across sides; whole shell with spiral, intercostal strife ; ambit round, produced in centre; aperture transversely 
elongated, narrowed internally. 
30,31,31a. G. Rotiformis. (Wheel-shaped Goniatite.) Discoidal, caiinatcd; with six, half-concealed, angular volutions; ambit with 
truncated carina ; sides with transverse furrows, placed only on centre of volutions and not reaching sides. 
32, 32a, 33. G. EvolutUS. (Unfolded Goniatite.) Discoidal, umbilicate; with three, apparent rapidly-increasing volutions ; aperture oblong 
with rounded angles ; septa with deep, acute, dorsal sinus ; first lateral lobe obtuse, angulated. 
34,34a. G. Listeri. (Lister's Goniatite.) Spheroidal, umbilicate; inner volutions concealed by outer one, their edges only being visible 
within umbilicus ; outer volution obsoletely-stnated transversely ; constrictions nearly direct; umbilicus very wide, deep, acute, with edges plaited, 
crenated, or dentated ; with double dorsal lobe, angular deep dorsal sinus ; first lateral lobe ample; very round, angular, deep, lateral sinus. 
35, 35a, 36. G. TruncatUS. (Truncated Goniatite.) Discoidal, umbilicate, much compressed; inner volutions wholly concealed; sides with 
transverse, strong, bent strife ; ambit in adult flattened; aperture elongated, narrow next ambit; contiguous volution intruding about one-third its 
length. 
37, 38. G. Carina. (Keeled Goniatite.) Lenticular, smooth ; ambit with sharp keel; aperture sub-cordate. 
39,40. G. Vittiger. (Filleted Goniatite.) Lenticular, cariuated; with five smooth, two-thirds concealed volutions; ambit with flattened 
carina. 
41,42,42a. G. RetiClllatUS. (Reticulated Goniatite.) Discoidal compressed, in adult umbilicate; inner volutions wholly concealed; sides 
of outer volution crossed by many strong, bent strife from inner margin of volutions; stria) crossed by rather wide, spiral strife, producing reticu¬ 
lated appearance; umbilicus large, deep, angular ; ambit angulated; septa with short dorsal lobe; first laterals rounded, large, with dorsal edges 
parallel; constrictions bent. b 
43, 45, 45a, 46. G. Spirorbis. (Winding Goniatite.) Discoidal; with seven or eight, rounded or oval, half-exposed, compressed volutions • 
coiled like a watch spring, crossed by very fine, slightly oblique strife and divided by deep, angulated suture ; aperture longitudinal, oblong-ovate' 
slightly indented by last volution ; septa with two, rounded, lateral sinuses and acute, central, dorsal sinus. 
41, 44a, 57. G. CrenistPioe. (Crenulated-striate Goniatite.) Sub-globose, umbilicate; inner volutions wholly concealed; sides with fine 
crenulated, reticulated, curved stria); longer ones from inner margins and passing over ambit, to margins of opposite side; umbilicus minute* 
rounded; septa, with dorsal lobe bifid; dorsal sinus acute; first lateral lobe sub-acute, double the length of dorsal lobe; second lateral lobe 
obtusely rounded, shorter than first; marginal sinus angular. 
47,48, 48a. G. Stenolobus. ( Narroic-lobed Goniatite.) Sub-globular, umbilicate; inner volutions entirely concealed; outside with minute 
rugosities and direct constrictions ; umbilicus fairly large ; lobes and sinuses of suture rounded; dorsal lobe narrow. 
49, 50, 50a. G. ExcavatUS. ( Excavated Goniatite.) Depressed, umbilicate; inner volutions wholly concealed; ambit angulated; sides with 
crenulate, transverse, undulating, slightly furcate stria); constrictions considerably waved; umbilicus large, acute; lateral sinuses as in G. Retiru 
latus, but more acute. 
51, 51a, 52. G. ObtUSUS. (Obtuse Goniatite.) Sub-globose, umbilicate; inner volutions wholly concealed; sides flattened, with delicate 
transverse, bent, furcate stria); ambit broad, rounded; a few faint longitudinal strife and some internal, bent ridges ; aperture oblong-ovate • nar¬ 
rowed behind body, volution intruding upon it one-third; septa delicately marked, waved on edge ; with short dorsal lobe, dorsal sinuses acute- 
first lateral lobe rounded. c » 
53, 54, 54a. G. BidOPSalis. ( Double-bached Goniatite.) Sub-globose umbilicate; inner volutions wholly concealed ; sides rounded with 
transverse, sigmoidal, sharp ribs; ambit rounded, with fine, spiral, distant striae; umbilicus largo; lateral lobes and sinus rounded, with double 
dorsal looc. 
55, 56. G. Mutabilis. (Mutable Goniatite.) Sub-globose, umbilicate ; inner volutions wholly concealed; sides and ambit much rounded and 
smooth, with direct constrictions; aperture transverse, semi-lunar; umbilicus large, with acute margin ; first lateral lobe narrow. 
58, 58a. G. ImplicatUS. (Involved Goniatite.) Sub-globose, umbilicate; inner volutions wholly concealed; sides somewhat flattened with 
delicate, transverse stria); umbilicus rather small; septa many, with waved edges ; first lateral lobes widely rounded, with dorsal margins narallel • 
with minute dorsal lobe with rounded dorsal sinuses. ^ ° 1 * 
• Pl&tylobtlS. (Wide-lobed Goniatite.) Sub-globose, umbilicate; inner volutions wholly concealed; sides and ambit rounded 
with obsolete, spiral stri®, and crossed by direct constrictions; umbilicus fairly large, crenate at margin ; with rounded sutural lobes and sinuses’ 
and wide dorsal lobe. • 
60, 60a, 61. G. Calyx. (Calyx Goniatite.) Discoideo-cylindrical, umbilicate; with about five volutions wholly enveloped in outer one * 
ambit nearly flattened, glabrous, with delicate, transverse strife; umbilicus wide, acute, deep, exposing within it margins of volutions; frequently 
crenate at edges ; aperture sub-luniform, flat, transverse, acute at outer angles; constrictions direct; dorsal lobe and sinus forming waved trans¬ 
verse line. ° * 
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