18 
CATALOGUE OF FCSISIDA, 
Agassiz , Mon. Scutelle, 145, t. 2, f. 1-10, t. 4, f. 1-6 ; Agassiz 
<0 Besor , 1. c. 138. 
Echinodiscus dimidia, &c., Breyn , 64, t. 7, f. 56. 
Placenta rotula, sp. 1, Klein , Gall. 94, t. 12, f. a. b. 
Echinodiscus decies digitatus, Leske ap. Klein , 209, t. 22, 
f. A. B. 
Echinodiscus octies digitatus, Leske ap. Klein , 211, t. 22, 
f. c. D. 
Oursin a dix doigts, Bose. Beterv. B. If. N. Xxiv. 281. 
Echinodiscus, Gualt. Test. t. 110, f. h. 
Echinus octodactylos, Gmelin, B. N. f. 3191. 
Echinus alterplanus, Beta, Thes. iii. t. 15, f. 17, 18. 
Echinotrochus octodigitatus, Van Phels. 33, sp. 6. 
Scutella decadactyla, Blainv. Bict. Bci. Nat. xlviii, 227, lx. 201 ; 
Zooph. 201 ; Besmovl. Tab. Byn. 222, n. 3. 
Scutella digitata, Lamk. Hist. iii. 278 ; Beslong. Ency. Meth. ii. 
675 ; Ency. Meth. t. 150, f. 3, 6 ; Agassiz , Prod. Echin. 188. 
Echinodiscus digitatus, Gray , Ann. Phil. 1825, 6. 
Echinodiscus octodactylus, Gray, Ann. Phil. 1825, 6. 
Scutella octodactyla, Blainv . B. S. N. xlviii. 227, lx. 201 ‘ 
Zooph. 201 ; Lamk. Hist. iii. 279 ; Agass. Prod. Echin. 188 ; 
Besmoulin, Tab. 222. 
Barilla, Cat. f. 425, n 960. Ency. Meth. t. 59, f. 7. Favanne , 
t. 58, f. c. 2, c. 4. 
Hah. East coast, of Africa. 
Yar. 1. Hinder part of lateral lobes entire. (E. M. t. 150, 
f.3,4.) 
a. Without spines. 
Var. 2, Hinder part of lateral lobes notched. Beha, Thes. iii. 
t. 15, f. 17, 18. E. M. t, 50, f. 5, 6. 
3. Rotula Gaultieri. 
The anterior part of the back convex, with two deep inter- 
ambulacral notches in the margin, the crown shelving towards 
the hinder edge ; the hinder part of the side lobes notched 
near the slits ; the vent much nearer the end of the posterior 
slit than to the mouth. 
Gavlt, t. 110, f. f. bad. 
Scutella digitata, /3, Lamk. Hist . 
Echinus octodactylus, Gmelin , B. N. 476. 
Hab. 
a. Bleached, without spines. 
