INDEX 



605 



Astrocnida, SOI 

 Astrocrinidce, 315 

 Astrocrinus, 315 



„ Benniei, 315 



Astrogomphus, 301 

 Astrofjonium, 296 



Astropecteii aurantiacus, branchial skele- 

 ton, 351 

 Astropectinidce, 296 

 Astrophytidoe, 301 

 Astrophyton, 301 



„ Liiicki, 301 



Astroporpa, 301 

 Astropyga, 290 

 Astroschema, 301 

 Astrotoma, 301 

 Atelecrinus, 313 

 Atelestacriims, 304 

 Atlanta, 90, 109 



,, Peronii, 7 

 Atlanfidce, 6 

 Atys, 46 



Auricula, 350, 402 



Auncularia, 506, 507, 508, 511, 512, 

 513, 514 



,, of Synapta, 512, 514 



Auricididce, 8 

 Aviada, 17 

 Avicididce, 17 



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

 Azygohranchia, 5 



Baculites stage, 68 



Balanocrinus, 313 



Balanoglossus, 562 



,, canadensis, 565 



Kowahvskii, 562 ; branchial 

 skeleton, 580 

 „ Kiipifferi, 571 



„ JMcrschkovskii, 571 



Barrandeocrinidce, 309 



Barrandeocrinus, 309 



Barrel-shaped larvte (Echin.), 514 



Barycrinus, 304 



Basals, 318 



Basibrachial cartilage (Ceph. ), 126 



Basipterygial cartilage (Ceph.), 127 



Basommotopkora, S 



Bathyhiaster, 296 



Bathycrinidce, 304 



Bathycrinus Aldrichianus, axial canals, 

 378 



Bathydoris, 13 



Batocrinus, 307 



,, pyriformis, 307 



Baur's vesicles, 467 



Belemnites, 24 ; shell section, 69 



Belemnitidce, 24 



Belemiincrlin's, 304 



Bek',/i,n.t,i>//u:--, 24 



Belleruphuntidic, 5 



Belosepia, 24 



„ shell section, 69 



Bntthastrr, 298 



lindhndytes, 285 



Berghia, 13 



Bipinnaria larva, 507 ; dorsal aspect, 528 



Biralva, 14 



Bivium, 325, 347, 407 



Blastoidea, 314 



Blauneria, 109 



Bojauus, organ of, 215, 221 



Bornellidce, 13 



Jii'thriocidaris, 289 



Jjothriociduroida, 289 



Butyocrmiis, 304 



Bourgueticrinidce, 310 



Bourguetinicrinus, 311 



Brachiolaria larva, 508 



BrancMopneusta, 78 



Brechites [AsjiergUlum), 21, 20 



Brisinga, 299 



Brisingidce, 299 



Brissop)sis, 293 



Brissus, 293 



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



oid.), 344 

 Buccinidce, 6 

 Buccinum, 160 

 Buliminus, 8 

 Bidimulidce, 8, 9 

 Bulimus, 8 



,, oblongus, 75 

 ,, perversus, 160 

 Bulla, 10 



,, hydatis, nervous system, 140 

 Bullidce, 10 



Bidloidea [Cephalaspidce), 110 

 Bursfe (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 

 Calyptrma, 108 

 Calyptrmidce, 6 

 Calyx, 319 

 Camerata, 306 

 Cancdiculata, 310 

 Cancellariidai, 6 

 Caprinidce, 18 

 Capididce, 6 

 Cardiacea, 18 

 Cardiaster, 293 

 Cardiidce, 18 

 Cardita, 17 

 Carditidoe, 17 

 Cardium, 18 



„ crf«/e, nervous system, 144 ; tuber- 

 culatum, 18 



