ALPHABETICAL INDEX. 
abbensis (Goniaster), 77. 
Abranchiata, 29. 
abyssicola (Amphiura), 
123. 
ee (Cribrella), 97, 
176. 
abyssicola (Dorocidaris), 
140. 
abyssicola (Ophiacantha), 
127, 128, 177, 179, 185. 
abyssicola (Ophiactis), 
123, 176, 185. 
abyssicola (Ophiocnida), 
123, 
abyssorum (Ophiaregma), 
124. 
acicularis (Astropecten), 
67. 
Actinia, 48. 
Actinogonidiata, 12, 14, 
17 
Actinoidea, 17. 
Actinopoda, 16. 
aculeata (Asterias), 125. 
aculeata (Ophiolepis), 
25 
aculeata (Ophiopholis), 
125, 177. 
aculeata (Ophiura), 125. 
aculeatum(Astrogonium), 
77. 
acutus (Echinus), 146, 
152, 177, 179. 
Adelostella, 28. 
zquituberculatus (Echi- 
nus), 159. 
affinis (Botryodactyla), 
39. 
affinis (Cidaris), 140. 
affinis (Ophioglypha), 
11 
aflinis (Ophiura), 106, 
111, 176, 179, 184. 
albida (Ophioglypha), 
108. 
albida (Ophiura), 106, 
108, 176, 179, 184. 
albidus (Echinus), 159. 
albidus (Toxopneustes), 
159. 
Alecto, 52. 
Allionia, 52. 
ammothea (Ophiura), 
9 
Amphidetus, 168. 
Amphiura, 25, 117. 
Amphiuride, ‘25, 
Anactinogonidiata, 12, 
14. 
Anaperus, 41. 
andersoni (Colochirus), 
45, 175, 178, 182. 
andrewsii (Cucumaria), 
41, 175, 182. 
andrewsii (Pentactes), 
andrewsii (Thyone), 
4 
andromeda (Astropec- 
ten), 69. 
andromeda (Psilaster), 
69, 175, 183. 
angulatus (Kchinocy- 
amus), 161. 
angulosa (Asterias), 98. 
angulosa (Stellonia), 
98. 
angulosus (Echinocy- 
amus), 160 
Angustistellées, 29. 
Annuloida, 12. 
annulosa (Ophiopsila), 
130, 177, 185. 
annulosus (Ophianoplus), 
130. 
Anseropoda, 83. 
Antedon, 52. 
Antedonidx, 18. 
Anthocidaris, 155. 
Apelmatozoic Cystidea, 
13. 
Apneumona, 15, 
Apneumona Apoda, 15, 
16. 
Apneumona Pedata, 16. 
Apneumones, 15, 
Apoda, 13, 15. 
Apoda pneumonophora, 
16. 
Apodes, 15. 
Apodia, 15. 
appressa (Ampbhipolis), 
120. 
aranciaca (Asterias), 
its 
arborescens (Astrophy- 
ton), 137. 
Archasteridx, 19, 60. 
Archiechinoderm, 13. 
arctica (Ophiocoma), 
arcticus (Archaster), 65. 
arcticus (Astropecten), 
65. 
arcticus (Leptoptychas- 
ter), 165, 175, 183. 
arcticus (Ophiopus), 124, 
185. 
arcuarius (Amphidotus), 
169 
arcuarius 
169. 
Ascidiastella, 15. 
aspera (Asterias), 90. 
aspera (Holothuria), 48 
50, 175, 179, 182. 
Aspidochirote, 16. 
Asteracanthion, 85, 98. 
Asterencrinea, 17. 
Asterencrinidea, 17. 
Astérencriniens libres, 
18. 
Asteriade, 18, 28. 
Asterix, 18. 
Asterias, 18, 24, 52, 66, 
97. 
Asteriatites, 52. 
Asterida, 18. 
Asteridx, 18. 
Asteridea, 18. 
Astéries, 18, 
(Spatangus), 
, 
