INDEX. 



Every reference is to the page. In some cases the upper and lower 

 half of the page is indicated by a small [number, l or 2 , placed above the 

 number of the page. Figures in black type refer to the systematic 

 position. 



Abaotinal 117. 



Abaliu.s 810 '. 



Abdomen. Crustacea 

 342. 



Abdominal bud 3.3. 



Abh. Senck. ( H'S. Frank- 

 furt == Abhandlungen 

 herausgegeben von 

 der Senckenbergischen 

 aaturforschenden ( !es- 

 ellschaf t ( Frankfort 

 a-m.) 



Aboral sinus. Asteroids 

 181, Echinoids 231, 

 development of 145, 

 146. 



Abyssascidia 27-. 



Acalvptratae 749 2 . 



,\<-.ilvptrate 749-. 



Acanthaster 192'-. 

 madreporites of 184. 



Acanthechinus 241'. 



Acanthephyra 531 -. 



Acanthia, nervous sys- 

 tem 634. 



Acanthocarpus 544'. 



Acanthocope 488'. 



Acanthoctenus 820-. 



Acanthocyclus 548 -. 



Acanthodon 819. 



Acantholeberis 381 -. 



Acantholithus 541 -. 



Acantholophus 842'. 



Aoanthomera 747 '. 



Acanthonotus 501'. 



Acanthophrynus 810 2 . 



Acanthosoma 692 '.stage 

 .12!)-. 



Acanthotelson 358 2 , 

 4tJ2. 463. 



Acanthotrochus 269-. 



Acarina 842. 



Z III 



Aearomantis 851 2 . 



Acartia 405 '-. 



Acasta 425-'. 



Aceste 247. 



Acetes 529-. 



Achaeus 545-, parasite 

 of 49 1 1 . 



Achelia 784. 



Acherontia 715. 



Acheta 03(5, 674-. 



Achlyonice 267-. 



Achthcres 409'-, deve- 

 lopment 402. 



A.-icle 539'. 



Acidostoma 501'. 



Acraeinae 712 2 . 



Acridium 672 1 . leg 621, 

 tympanic organ 635. 



Acrocalanus 404. 



Acrocera 748 l 



Acrochordocrinus 298 2 . 



Acrociclaris 240 -. 



Acron 319. 32.'). 326. 

 609. 



Aero per us 381 -. 



Acrosalenia 240 '-. 



Acrothoracica 426. 



affinities of 427 '. 



Actaeomorpha 544' 2 . 



Actinal 117. 



Actinocrinus 296 2 . 



Actinocucumis 269'. 



Actinometra 301 l , am- 

 bulacra! groove 271, 

 intestine 285, mouth 

 and anus 270. 



Actinopoda 265. 



Actinopus 819. 



Aculeata 762. 



Adambulacral ossicles 

 109. 



Adela 707 -. 



865 



Adephaga 725. 



Adimerus 730 2 . 



Admetus 808, 810 2 . 



Adonea 820 2 . 



Adranesius 406 2 . 



Aebutina 820 '. 



Aedes 744-. 



Aega 489 2 . 



Aegathoa 489 2 . 



Aegialitidae 732 2 . 



Aegina 504 '. 



Aeglea 541 2 . 



Aenippe 405 -. 



Aeolothrijis 689. 



Aepophilidae 693 2 . 



Aerope 247. 



Aeschna 688, eye of 331 



Aethon 408 2 . 



Aetidius 4C5 1 . 



Affinities Artbropoda 

 315, Crinoids 290, 29!, 

 Echinoderms 160, 

 Echinoids 235, Holo- 

 tbtirians 205, Trilo- 

 bita 366, Phyllopoda 

 367. 



Agalia 697 -. 



Agaricocrinus 296 2 . 



Agaristidae 718 2 . 



Agassizia 246 2 . 



Agassizocrinus 295. 



Agaue 851 '-. 



Agdistis 720'. 



Agelaorinus 310. 



Ageleua 825'. 



Ageronia 712 2 . 



A^lnia 391. 



Aglossa 720 1 . 



Aglycyderes 736- 

 ' 



A-rinn 688 2 . 

 Agriotes 732'. 



3 K 



