58 Crust. 
X. GIGANTOSTRACA. 
Between Cambrium and Silurian : Trilobitci ; Pompeckj (32). 
Silurian, Belgium : Trilobita ; Malaise (20). Melbourne : Trilobita , 
n. sp. of Cypliaspis ; Gregory (15). Niagara Falls: Gigantostraca ; 
Grabau (14). Norway : Gigantostraca ; Kiaer (16). Pentland Hills: 
Eurypterida incl. n. g. and 6 n. spp. ; Laurie (18). 
Lower Devonian, Singhofen : Trilobita , n. sp. of Homalonotus ; Schlutter 
( 36) p. 180. 
Devonian : Corniferous Rocks of Ohio ; Trilobita (a few spp.); Bow- 
NOCKER (5). 
Carboniferous, Derbyshire : Trilobita ; Woodward (41). Missouri : 
Trilobita ; Vogdes (37). 
Rhietian, Vice-sur-Seille : n. sp. of Limulus ; Bleicher (4). 
IV. SYSTEMATIC. 
XIPHOSURA. 
t Limulus vicensis, Vic-sur-Seille ; Bleicher, Bull. Soc. Nancy (2) xiv, 
p. 116, pi. i, n. sp. 
TRILOBITA. 
Value of certain characters in the Classification of Trilobita ; 
(17). 
Lebesconte 
t Agnostus trisectus mut. ponepunctus nov., p. 278, pi. v, figg. 8a-c, mut. 
germanus nov., p. 279 ; Matthew, Bull. N. Brunswick Soc. iv, n. spp. 
t Agraulos quadrangularis , descr.; Crosby, Pap. Boston Soc. iv, p. 674, 
pis. xxxiv, figg. 9 & 10, xxxv, fig. 1. 
t Cypliaspis spryi, Silurian, Melbourne ; Gregory, P. Soc. Victoria xiii, 
p. 179, pi. xxii, n. sp. 
t Encrinurus multiplicatus , descr. ; Reed, Geol. Mag. (iv) viii, p. 107, 
pi. vii, fig. 3. 
t Grijjithides longiceps var. angusta nov., descr. ; Woodward, t. c. p. 153, 
pi. viii, figg. 6-8. 
t Homalonotus spinosissimus , Lower Devonian, Singhofen; Schlutter, 
Zeitschr. Deutsch. geol. Ges. lii, p. 180, n. sp. 
t Lidias scutalis , descr. ; Reed, Geol. Mag. (iv) viii, p. 5, pi. i, figg. 1-4. 
t L. grandis , note on the hypostome ; Whitfield, Bull. Amer. Mus. ix, 
p. 45. 
f Microdiscus, the genus ; Matthew, Amer. Geol. xviii, p. 28. 
t M. sp., notes ; Crosby, Pap. Boston Soc. iv, p. 671, pi. xxxiii, fig. 3. 
t Olenellus, sp., p. 665, pi. xxxiv, figg. la & 16, asaphoides , p. 667, pi. xxxiv, 
figg. 2 a & 26, descr. ; Crosby, t. c. 
1 0. walcottanus, Cambrian, York County, Pen.; Wanner, P. Washington 
Ac. iii, p. 267, pis. xxxi & xxxii, n. sp. 
iParabolina daivsoni , Cambrian, Cape Breton; Matthew, Bull. Soc. 
N. Brunswick iv, p. 282, pi. v, figg. 6a-/, n. sp. 
t Paradoxides harlani , descr. ; Crosby, Pap. Boston Soc. iv, p. 681, pis. 
xxxv, fig. 3, xxxvi-xxxix. 
t Phacops limndurus , occurrence in Gotland ; Chapman, Ann. Nat. Hist. 
(7) vii, p. 156. t P. caudatus var. corrugatus , descr. ; Reed, Geol. 
Mag. (iv) viii, p. 106, pi. vii, figg. 1 & 2. 
t Proteus Jletcheri , descr.; Reed, t. c., p. 11, pi. i, figg. 5 & 6. 
t Ptychoparia rogersi , descr. ; Crosby, Pap. Boston Soc. iv, p. 679, pi. 
xxxv, fig. 2. 
