INDEX. 



S69 



stone canal 183, num- 

 ber of madreporites 



184, axial organ, 

 vascular system, 

 gonads 186, care of 

 brood, habits 187, 

 extinct forms 188, 

 fixation of 149. 



Aster ops is 191'. 



Asteropsis 241 *. 



Asthenos o in a 240 l , 

 spines 226. 



Astigmata 851 2 . 



Astrobunus 842 l . 



Astroceras 207 '. 



Astrochele 207'. 



Astrochema 207'. 



Astroclon 207'. 



Astrocnida 207'. 



Astrocrinus 313. 



Astrogomphus 207'. 



Astrogonium 190'. 



Astronyx 207'. 



Astropecten 189 2 , larva 

 141, no pedicellariae 

 173, potean vesicles 



185, stone-canal 183. 

 Astrophis 206 2 . 

 Astrophiura 207 -. 

 Astrophyton 207 -, 



pedicellariae of 190. 

 Astroporpa 207'. 

 Astropyga 241'. 

 Astrotoma 207 l . 

 Astyra 501 \ 

 Asymmetry 390 2 . 

 Asymmetry of Verru- 



cidae 426 1 . 

 Atax 843, 851 l . 

 Atelecrinus 301'. 

 Ateleryclus 549. 

 Atelopsalis 851 '-. 

 Atemeleta 667 2 . 

 Athalia 758. 

 Athanas 532 2 . 

 Athelges 491 2 . 

 Athelgue 491 2 . 

 Athelnus 491 2 . 

 Atherix 746 2 . 

 Atrac tides 851'. 

 Atractosoma 593'. 

 Atria 1 cavity 12. 

 Atropos 678 1 . 

 Atta 772 -. 

 Attacus 714'. 

 Attus 826 2 . 

 Aturus 851 '. 

 Atya 532'. 

 Atyaephyra 532'. 



Atylus 501 -'. 

 Atyoida 532'. 

 Atypoides 820'. 

 Atypus 820'. coxal 



glands 817. 

 Auditory organ, Insecta 



635. 

 Augaptilus 405 l , sexes 



399. 



Aulacus 761. 

 Auricle Echinoids 228, 



Balanoglossida 87, 



pluteus 140. 

 Auricularia 137, 138. 

 Austromysis 471 2 . 

 Austro-Peripatus 576. 

 Autodermophily 121. 

 An totomy Asteroids 187, 



Balanogiossida 100. 

 Avicularia 81 1.819. 

 Axial organ 130, 234, 



development 146, 



Asteroids 186, Cri- 



noids 287, Holo- 



thurians 255, Ophiti- 



rids 202. 

 Axial sinus Asteroids 



180, development 145, 



Echinoderms 128, 



Echinoids 231. 

 Axillary primibraoh 277. 

 Axiopsis 538'. 

 Axius 523, 538'. 

 Axonopsis 850'. 



Babycunis 806-'. 



Bacillus 670 1 , 670- 



Back-swimmers 695. 



Bacteria 670'. 



Bactriclium 670'. 



Baculus 408-. 



Bacunculus 670'. 



Baerocrinus 294'. 



Bairclia 391. fossil 358, 

 i^astnr mill 361. o'ut 

 386. 



Balanidae, shell of 419. 



Balanocriniis 301'. 



Balanoglossida 67. 68. 



Balanoglossus (is, 73, 

 102, branchial pores 

 77. gonads 95, ova 

 95. habits 100, neural 

 canal 73, nerve-roots 

 73, notochord 75, 

 proboscis 82, 83, pr<> 

 boscis pore 84. peri- 

 cardium 87. 



Balanus 425 2 , body of 

 418, excretory organs 



421, fertilization of 



422, larvae of 414, 

 parasite of 491 '. 



Barana 784. 



Bargena 850 -. 



Barnacles = Balanus. 



Barrandeocrinus 296-. 



Barrus 833. 



Barybrotes 489'. 



Barychelus 819. 



Barycrinus 295'. 



Basal plates Echino- 

 derms 121, Crinoids 

 275. 



Basanistes 409 -. 



Basement membrane 

 Balanoglossida 91, 

 connective and skele- 

 tal tissues 91. 



Basilar plate 505. 



Basipodite 344. 



Batea 501 ~. 



Bathyaetis. parasite of 

 435. 



Bathybiaster 189 -. 



Bathycriniis 299. 300', 

 apical nervous sys- 

 tem 283. 



Bathycuma 476. 



Bathyherpystikcs 267 '. 



Bathynectes 548^. 



Bathynella 463. 



Bathynomus 489 1 , gills 

 of 441, pleopods of 

 482. 



Bathyoncus 28', 29% 

 pharynx of 1 1 . 2(i. 



Bathyphantes 823 2 . 



Bathyplax 547 '. 



Bathyplotes 267'. 



Bathyporeia 501 '. 



Batocrinus 296-. 



Bdella 851 -. 



Bdellorhynchus 852'-'. 



Beche de Mer 264. 



Bed-bug 694'. 



Bedeguar gall 75S. 



Bee-bread 762. 



Beetles =('ok-i>|>trr.-i. 



Beetles, black- <H57 l , 

 sound-producing 723, 

 windless 727, smallest. 

 728 2 , of ants 727 1 , of 

 beavers 727 2 , mice 

 and humble-bees.727 2 , 

 ants' nests 728 1 , 



thatch 728-. of ra|ie- 



