52 tick. 
ECHINODERMATA. 
Cretaceous, Colorado; C. subconicus, id. p. 7G, Cretaceous, Mississippi: 
n. spp. 
j* ; Catopygus ( Studeria ) elegans , Laube, Eocene of Australia ; Tate, 
p. 276. C. oviformis , Courad., Cretaceous, Now Jersey; Clark, p. 76. 
f C. pusillusy Clark, p. 76, Cretaceous, New Jersey, n. sp. 
Cidaris , Klein, definition of genus ; Cotteau, (1) pp. 91 & 92. 
f ; C. ( Leiocidaris ) sp., Tertiary, Willunga, Australia ; Gregory, (1) 
p. 481. 0. adamsi , Wright, Lower Limestone, Malta ; id. (4) pp. 588 & 
589. C. anglosuevica , Oppel., v. sub Rhabdocidaris horrida , Merian. 
G. armiger , Morton, from Cretaceous of New Jersey ; Clark, p. 75. 
C. avenionensis , Desmoulins, Tertiary of Algeria ; Cotteau, (4) p. 243 : 
Globigerina Limestone, Malta ; Gregory, (4) pp. 587 & 588, pi. i, fig. 1 ; 
synonym, C. stemmacantha, Ag. : Aquitanian of Carry, near Mar- 
seilles ; Gourret. p. 129. C. bertrandi , Michelin, v. sub Diplocidaris 
gigantea (Ag.), Desor. G. blandus , de Greg., Eocene of Alabama ; de 
Gregorio, (2) p. 253, pi. xliv, fig % 4. C. blumeubachi, Musset, Jurassic of 
Portugal ; de Loriol, (3) pp. 18 & 19, pi. iii, figs. 2 & 3. C. cesaredensis , 
de Lor., ib. ; id. (3) pp. 11 & 12, pi. ii, figs. 1-4. C. chofati , de Lor., ib . ; 
id. (3) pp. 29 & 30, pi. v, figs. 3-11. C. coronata, Goldf., Jurassic of 
Hansdorf, near Inowrazlaw ; Langeniian. C. cucumifera , Ag., Jurassic 
of Portugal ; de Loriol, (3) pp. 3 & 4, pi. i, fig. 1. C. cymosa , de Lor., 
ib. ; id. p. 12, pi. ii, fig. 5. C. desmoulinsi , Sismonda, Pliocene of 
Algeria ; Cotteau, (4) p. 242. C. droyiaca , Cott., v. sub Diplocidaris 
gigantea (Ag.), Desor. C. Jiorigemma } Phillips, Jurassic of Portugal ; 
de Loriol, (3) p. 19, pi. iii, figs. 4 & 5. C. glandifera y Goldf., ib. ; id. 
(3) pi. v, figs. 1 & 2, pp. 27-29 : from Jurassic of Japan ; Naumann'A 
Neumayr, p. 31. 
t ; Cidaris gomesi , de Lor., Jurassic of Portugal ; de Loriol, (3) pp. 24 
& 25, pi. iv, fig. 4, n. sp.? 0. guerangeri , Cott., ib . ; id. (3) p. 16, pi. ii, 
figs. 16-18. 0. guimaraesi, de Lor., ib . ; id. (3) pp. 30 & 31, pi. v, figs. 12- 
16, n. sp. ? C. guinchoensis, de Lor., ib. ; id. (3) pp. 25 & 26, pi. iv, figs. 5-8, 
n. sp.? 0. honorince, Cott., ib. ; id. pp. 8 & 9, pi. i, figs. 10-13. C. 
hystricoides, Quenst., Jurassic of Hansdorf, near Inowrazlaw ; Langeniian. 
0. kccchliniy Cott., Jurassic of Portugal ; de Loriol, (3) p. 13, pi. ii, fig. 6. 
G. lineata y Cott., ib . ; id. (3) p. 20, pi. iii, figs. 6-10. G. lorioli } Cott., 
Eocene, Loire-Inferieure ; Cotteau, (5) p. 155, pi. viii, figs. 20-23. 0 
lortetiy Cott., Jurassic of Portugal ; de Loriol, (3) p. 6, pi. i, figs. 5 & 6. 
G. loulensis , de Lor., ib. ; id. (3) p. 27, pi. iv, figs. 10 & 11. G. margiuata t 
Goldf., ib. ; id. (3) pp. 21 & 22, pi. iii, figs. 11-17. C. mattosensis, de 
Lor., ib. ; id. (3) p. 15, pi. ii, figs. 12 & 13. C. maximus , Munst (pars), 
v. sub. Rhabdocidaris horrida , Merian. G. meandrina , Ag., Jurassic of 
Portugal ; de Loriol, (3) p. 14, pi. ii, figs. 7-11. G. melitensis , Wright, 
Upper Coralline Limestone, Malta ; Gregory, (4) pp. 586 & 587. ~C. 
modestusy de Greg., Eocene of Alabama; de Gregorio, (2) p. 253, pi. 
xliii, fig. 26. O. mcerensy de Greg., ib. ; id. (2) p. 252, pi. xliii, figs. 22 & 
23. C. nevesensis, de Lor., Jurassic of Portugal; de Loriol, (3) p. 23, 
pi. iii, fig. 18, n. sp. ? C. ordinatus, de Greg., Eocene of Alabama; de 
