ECHINOIDEA. 
Ec.h. 57 
f Amblypygus lorioli , Pianosa, Simonelli (245) p. 222, n. sp. 
Ananchites, the proper spelling of Ananchytes ; Lambert (146) p. 94. 
'\ Ananchytes sulcatus ?, Goldf. ; Aguilera (4) p. 27. 
f A. ovalis , Middle Marl bed, Upper Cretaceous, Vincentown, N. J., Clark, 
Bull. U. S. Geol. Surv. No. 97, p. 74, n. sp. 
f Anthobrissus cerceleti , Pomel, see Phyllobrissus cerceleti. 
f Arachniopleurus, Duncan, defined, p. 598; A. arenatus , d’Arch., sp., re- 
described, with young stage, p. 599 ; A. reticulatus , Dune. & Slad., 
p. 602 ; A. vilanovee , Cott., sp., p. 603 : Cotteau (44). 
Arachnoides placenta, Linn.; Loriol (154) p. 376, Studer (256) p. 181. 
Arbacia alternans, Trosch., ova in ambulacra, p.281 ; A. dufresni, Blainv., 
colour ; Studer (256) p. 289. A. nigra , Mol. sp., Callao, with vari- 
ations in anal plates; Meissner (181) p. 184. A.punctulata, Desm., 
multiple genital and madreporic pores ; Janet (128) : experiments 
on eggs; Morgan (196): also Studer (256) p. 22. A. pustulosa, 
Gray ; Studer (256) p. 22 : spermatogenesis ; Field (83). A. 
spathuligera , Yal. sp., Callao, with variations in anal plates ; 
Meissner (181) p. 184. 
Arbaciadcc, apical system ; Agassiz (2) p. 77. 
f ArchcvQcidaris, sp., Gympie Beds, Queensland ; Etheridge (76) p. 213. 
Aspidodiadema ; Agassiz (3) pp. 77 & 80. 
Asthenosoma , Grube ; Bell (16) p. 143, Agassiz (3) pp. 80 & 83. A. 
hystrix , W. Thoms.; Bell (16) p. 143. A.varium f Grube, detailed 
description of two perfect specimens, and of a young also (?) of 
this species ; Loriol (154) p. 364. 
Astriclypeus manni , Yerrill sp.; Meissner (181) p. 185. 
Astropyga elastica , Stud.; Studer (256) pp. 248 & 256. 
Australanthus, n. g., type Cassidulus longianus, Greg.; Bittner, SB. 
Ak. Wien, ci, Abth. i, p. 350. 
f Baueria, Noetl., defined and discussed, p. 573 ; B. gcometrica , Noetl., 
p. 577 ; B. rou8seli , Cott. sp., redescribed, p. 574 : Cotteau (44). 
•\Bothriocidaris, apical system ; Agassiz (2) p. 72. 
f Botriopygus alabamensis, Clark, redescribed and now first figured; Clark 
( 36) p. 60. B. nanclasi , Senonian of Angoul6me ; Arnaud (9) p. 27. 
Brcynia , Desor, defined ; Cotteau (44) p. 670. B. auslralasice , Leach ; 
Studer (256) pp. 192 & 194. iB. nieslei , ascribed to Gauthier, 1893, 
perhaps n. sp., Eocene, Djebel-Trozza, Tunis ; Cotteau, Pal. Franc. 
Ech. Tert. ii, p. 671. 
Brissopsis , Agass. ; Bell (16) p. 172, Agassiz (3) p. 281. B. lyri/era t 
Forbes ; Bell (16) p. 172, Danielssen (62) p. 5, Petersen (216) 
. p. 42 : great numbers on W. Coast of Scotland ; Scott (238) 
p. 50. fJ7. sismondcc, Agass., Helvetian of Rassuen, Rhone Basin ; 
Dep^ret (64) p. 448. 
B. oldhami , B. of Bengal, 753 fathoms ; Alcock, J. Asiat. Soc. Bengal, 
lxii, p. 174, n. sp. 
f Bri88ospatangus vkentinm [Eocene ?], of Yicentino, Italy ; Mazzetti, 
Atti Soc. Modena (3) x, n. sp. 
