INDEX 



To names of Classes, Orders, Sub-Orders, and Genera ; to technical terms ; and to 

 names of Authors discussed in the text. 



Abacocrinus, 165 

 abactinal skeletal elements, 



109 



Abutus, 322 

 aboral circular sinus (Oph.)* 



266 



Abracrinitu, 166 

 AbrotocrittHfi, 180 

 Acacocrinus, 166 

 Acanthar chaster, 251 

 Acanthaster, 258 

 Acanthechinas, 309 

 Acanthocrinus, 201 

 . I canthocystis, 4 6 

 aeanthosphenote, 287 

 Acanthotrochus, 234 

 accessory intestine, 27 



plates ( Ast. ), 246 

 Acentrotremites, 90, 92 

 Acute, 322 

 Achlyouice, 229 

 Ackradocrimis, 178 

 Achradocystis, 55 



A crochordocrinits, 192 



Acrocularis, 307 



^4 crocrinus, 159 



Acrosalenia, 306 



.4cwra, 278 



actinal furrows (Ech.), 317 



skeletal elements, 109 

 Actinocrinus, 169 

 Actinocucumis, 230 

 actinogonidial, 237 

 actino-h'teral spines, 256 

 Actinomctra, 196 

 Actinophyma, 310 

 Actinopoda, 227 

 actinostomial ring (Ast.), 



241 



Actinozoa (Leuckart), 33 

 adambulacral, 20 



mouth, 247 

 adambulacrals (Crin.), 115 ; 



(Ast.), 241 ; (Oph.), 270 

 Adelocrinus, 201 



j AdelopneuxteS) 316 

 ! Adethme, 321 

 adetopueustic, 254 

 adradii, 20 

 Aduuata, 155 

 Aeolopaeiistes, 313 

 Aerope, 322 

 Aesiucrinns, 180 

 Aes-iocystis, 208 

 Aethocystiti, 57 

 Aetites, 53 

 Aganaster, 275 

 Agaricocritius, 167 

 Agassiz, A., 240, 285 

 Agassiz, L., 240, 260, 261, 



284 



Agassizia, 322 

 Agassizocrinus, 181 

 Agelacrinoidea, 205 

 Agelacrinus, 207 

 Agelacystis, 207 

 Agelcutiscus, 208 

 Agriocrinus, 156 

 Aldrovandus, U., 283 

 ^1/ecto, 195 

 Alexandria, 318 

 Allagecrimis, 151 

 Allionia, 201 

 AUocrinus, 162 

 Allocystis, 72 

 Alloprosallocrimis, 167 

 Amblacrimts, 156 

 Amblypneustes, 313 

 Ainblypygus, 320 

 ambulacra, 2, 15 ; (Blast.), 



78 ; (Ech.), 286 

 ambulacralia, ambulacrals 



(Crin.), 100,115; (Ast.), 



241; (Ech.), 288, 296 

 ambulacral mouth, 247 

 amnion (Ech.), 15 

 amoebocytes, 22 

 Amorphocystis, 55 

 Amplieristocrinus, 173 

 Amphiaster, 254 



yl mphiglypha, 278 

 Amphilepis, 278 

 J mphipholis, 27 8 

 amphisternous, 318 

 Amphiura, 278 

 Amphora, 169 

 .4 wphoracrinns, 170 

 AMjrfioracystis, 47 

 Amphoridea, 43 

 anjpulla, 290 

 Awyydalocystiti, 58 

 anal plates (Crin.), 119; 

 (Ech.), 294 



spiracle, 85 



tube, 131 



*, 119 

 Atianchytes, 321 

 Atutpta, 234 

 Anasterias, 258 

 Anauloddaris, 314 

 anchylosis, 108 



^1 ncyrocrintis, 177 

 anectobrauchiate, 304 

 Anisocrinns, 189 

 Ankyrodervia, 233 

 Anoc/utnus, 320 

 J nomalanthits, 318 

 Anomalocrinus, 146 

 AnovialocystiSi 51 

 Anorthopygus, 320 

 Antedon, 195 

 Anthenea, 253 

 Anthenoides, 253 

 Antliocystis, 62 

 Anthemocrinus, 200 

 AnthocrinuSi 176 

 antimeres, 19 

 vlorocrmw^, 167 

 Aphroditaster, 251 

 apical nervous system, 30 



system (Crin.), 112 ; 

 (Oph.), 268 ; (Ech.), 286, 

 294. See also calycinal 



Apiocrinits, 191 

 Apiocystis, 61 



