248 
CEPHALOPODA. 
Belemnites, 
G. Longthomi. Brown, Tr. Man. Geo. Soc. I. p. 210, pi. 
7, figs. 23, 24, 25, 20. 
Elliptical, sub-compressed; with three rapidly increasing 
volutions; aperture ovate; umbilicus small; sides covered 
with numerous, doubly arcuated, flat, indistinct ribs, septa 
with all the lobes and sinuses rounded and equal. Diameter 
twelve lines; thickness half its diameter. 
In the young condition it is smooth, with directly transverse 
constrictions. 
Found in the soft Shale, near Hebden Bridge. 
10. Goniatites Proteus. —Proteus’s Goniatites, pi. XXI.* 
figs. 27, 28. 
G. Proteus. Tr. Man. Geo. Soc. I. p. 217, pi. 7. f. 27, 28. 
Discoidal, compressed, lenticular; volutions numerous; um¬ 
bilicus deep, funnel-shaped, exhibiting the margins of the 
volutions, the external margins of which are enveloped in the 
outer one ; margin of umbilicus with an elevated ridge ; ambit 
produced, slightly flattened in the centre, sides spirally striated, 
and crossed by numerous, nearly obsolete, lines of growth ; 
constrictions indistinct; aperture oblong-ovate, equal to a third 
of the diameter of the shell; septa with all the lobes mid 
sinuses rounded. Diameter seven lines; thickness two Mcs 
and a fourth. 
In the young condition it is considerably compressed, and 
the constrictions are distinct, broad, and deep; these fill up as 
the shell advances in growth. 
This shell may be distinguished from our G. Spirorbis , p. 30, 
pi. 21, figs. 45, 4G, in the umbilicus being smaller, and angular, 
and in its being spirally striated, in the aperture being much 
more elongated, in the ambit being more produced, and in the 
indentations from the volutions being more acute, and following 
the form of the septa. 
Found at Lob Mill, near Todmorden. 
11. Goniatites parvus. —The Small Goniatites, pi. XXI.* 
figs. 32, 33. 
G. parvus. Brown, Tr. Man. Geo. Soc. I. p. 217, f. 32, 33. 
Spheroidal, with straight constrictions; umbilicus large; 
surface covered with exceedingly minute, transverse striae; 
aperture semilunar; septa with all the undulations low and 
rounded ; dorsal sinuses very wide. Diameter three-fourths of 
a line, thickness about the same. 
Found at Hoole Bottom, near Todmorden. 
12. Goniatites minutissimus.—T he Very Minute Gonia¬ 
tites, pi. XXL* figs. 29, 30, 31. 
G. miniUissimus. Brown, Tr. Man. Geo. Soc. I. p. 218, pi. 
7, figs. 29, 30, 31. 
Discoidal, sub-globose, smooth ; with three rounded volutions, 
the inner ones only half concealed ; aperture semilunar; um¬ 
bilicus large, moderately deep; septa unknown, Diameter 
one-third of a line. 
Found in the Carboniferous Shale at Millwood, near Tod- 
movden. 
13. Goniatites Smithii. —Smith’s Goniatites, pi. XXI.* 
figs. 34, 35. 
G. Smithii. Brown, Tr. Man. Geo. Soc. I. p. 218, pi. 7, 
figs. 34, 35. 
Discoidal, sub-globose, very thick; sides narrow; ambit very 
broad, slightly produced in the centre ; umbilicus very large, 
funnel-shaped, and deep, exposing the margins of the inner 
volutions, and with an acute margin; aperture semilunar; 
constrictions directly transverse; the whole surface covered 
with strong, regular, transverse, slightly waved strife; aperture 
semilunar, narrow. Septa dorsal lobe simple and rounded, 
dorsal sinus rounded and very small; first and second lateral 
lobes angular, with their edges parallel; lateral sinus rounded. 
Diameter eight lines, thickness about six lines and a half. 
This species differs from G. Listen in the form of its septa. 
Found associated with the G. Proteus, at Millwood, near 
Todmorden. 
14. Goniatites micronotus. —The Small Umbilicated Go¬ 
niatites, pi. XXI. figs. 11, 11 a, 12. 
G. micronotus. Phillips, Geo. York. II. p. 234, pi. 19, 
figs. 22, 23. 
Sub-compressed; surface with transverse strife, and the con¬ 
strictions but slightly bent; septa with the dorsal lobe small, 
the first lateral lobes large and rounded, with their dorsal edges 
parallel; umbilicus small and rounded. 
The Carboniferous Limestone, Bolland. 
1. Belemnites ellipticus. —The Elliptical Belemnites, pi. 
XXIX.* figs. 1, 2, and 22. 
B. ellipticus . Miller, Geo. Tr. 2nd Ser. II. p. 60, pi. 8, 
figs. 14, 15, 16, 17. 
Guard much elongated, elliptical; opaque, greyish-brown, 
terminating in a mucronated point. 
In an early stage of growth, the guard is generally round, as 
may he seen in the transverse sections, but becomes subse¬ 
quently, by an opposition of laminae, of irregular thickness, of 
an elliptical form. 
Fig. 2, a transverse section, and fig. 22 is a variety. 
Inferior Oolite, Dundry, Somersetshire. 
2. Belemnites elongatus. —The Elongated Belemnites, 
pi. XXIX.* fig. 7. 
See page 42, No. 13, pi. XXIX. fig. 11. 
3. Belemnites abbreviatus.- —The Shortened Belemnites, 
pi. XXIX.* figs. 6, 8, p. 42, pi. XXIX. figs. 18, 19. 
4. Belemnites sulcatus. —The Furrowed Belemnites, pi. 
XXIX.* figs. 9 and 11. 
B. sulcatus. Miller, Geo. Tr. 2nd Ser. II. p. 59, pi. 8, figs. 
3, 4, 5. Platt. Hist. Oxford, pi. 3, fig. 6. 
Guard sub-cyliudrieal, elongated, and provided with a longi¬ 
tudinal furrow, and terminating in an acute apex. 
The Inferior Oolite, Daudry, Somersetshire. 
