INDEX 



605 



Astrocnida, 301 

 Astrocrln idcr\ 315 

 Astrocrinu-s, 315 



Benniei, 315 



Hiphus, 301 

 Astrogonium, 296 



den ai'.rantiacus, branchial skele- 

 ton, 351 



Axtropectinida, 296 

 Attrophytiffce. 301 

 Attrophyton, 301 



Lincki, 301 



Astroporpa, 301 

 Astropyfja. 

 Astroschema, 301 

 Astrotoma, 301 

 Atelecrinus, 313 

 Atelestocrinus, 304 

 Atlanta, 90, 109 



Peronii, 7 

 Atlantidce, 6 

 Atys, 46 



Auricula, 350, 402 



Auricularia, 506, 507, 508, 511, 512, 

 513, 514 



of Synapta, 512, 514 

 A v. ricul idee, 8 

 Ai-icv.la. 17 

 Aciadidcf, 17 



Axial organ ( = ovoid gland), 437, 445, 446 

 Azygobranchla, 5 



BACULITES stage, 68 

 Bc^anocrinus, 313 

 Bcdanoglossus, 562 



canadensis, 565 

 Kwoalevskii, 562 ; branchial 

 skeleton, 580 



i Kiipfferi, 571 



Mcrschkorskii, 571 



Be. rra n dewin idee, 309 

 Barrandeocrinus, 309 

 Barrel-shaped larvae (Echin.), 514 

 BarycriiiHs, 304 

 Basals, 318 



Basibrachial cartilage (Ceph.), 126 

 Basipterygial cartilage (Ceph.), 127 

 Basoiniiifitiiphora, 8 

 Bathybiaster, 296 

 Bathycrinida, 304 

 Bathycrinus Aldrichianus, axial canals, 



378 



Bathydoris, 13 

 Batocrinus, 307 



,, pyriforiiris, 307 

 Baur's vesicles, 467 

 Bdemnites, 24 ', shell section, 69 

 Belemnitidce, 24 

 Belcm nocrin us, 304 

 Bdemiwteuthis, 24 

 Bellerophontidce, 5 

 Belosepia, 24 



,, shell section, 69 



Benthaster, 298 



Benthodytes, 285 



Berghia, 13 



Bipinnaria larva, 507 ; dorsal aspect, 528 



Bivalra, 14 



Bivium, 325, 347, 407 



Blastoidea, 314 



Blauneria, 109 



Bojauus, organ of, 215, 221 



Bornellidce, 13 



Bothriocidaris, 289 



Bothriocidaroida, 289 



Botyocrimis, 304 



Bourgueticrinidce, 310 



Bourguetinicrinus, 311 



Brachiolaria larva, 508 



Branchiopneiista, 78 



Brechites (Aspergillum), 21, 20 



Brisinga, 299 



Brisingidce, 299 



Brissopsis, 293 



Brissus, 293 



Buccal shields (Oph.), 336 ; plates (Echin- 



oid.), 344 

 Buccinidce, 6 

 Buccinnm, 160 

 Bull-minus, 8 

 Bidimulidce, 8, 9 

 Bulimus, 8 



,., oblongus, 75 

 ,, percersus, 160 

 Bulla, 10 



,, hydatis, nervous system, 140 

 Buttidas, 10 



Bulloidea (Cephalaspidce), 110 

 Bursse (Oph.), 494 

 Byssus, 112-115, 114 



CALAMOCRINUS, 310 

 Calamus, 69 

 Calcareous cells, 190 

 Calceocrinus, 304 

 Calliaster, 296 

 Callicrinus, 309 

 Callocystis, 332 

 Callum, 64 

 Calymne, 293 

 Calyptroea, 108 

 Ccdyptrceidce, 6 

 Calyx, 319 

 Camerata, 306 

 Canaliculata, 310 

 Cancdlariidce, 6 

 Caprinidce, 18 

 C'iptdidce, 6 

 Cardiacea, 18 

 Cardiaster, 293 

 Cardiidce, 18 

 Cardita, 17 

 Carditldce, 17 

 Cardium, 18 



ed ule, nervous system, 144 ; tuber- 

 culatum, 18 



