INDEX 



Every reference is to tlie page : words in italics are names of genera or species ; figures 

 in italics indicate that the reference relates to systematic position ; figures in thick 

 type refer to an illustration ; f. = and in following ]iage or pages ; n. = note. 



Abalius, 312 



Abdomen, of Malacostraca, 110 ; of Acan- 

 tholithia, 178; of Birgus, 176; of 

 Cenobila, 176 ; of Dermaturus, 178 ; of 

 Hajjalog aster, 178 ; of Lithodes, 178 ; 

 of Fylopagurus, 178 ; of Trilobites, 235 ; 

 of Scorpions, 297 ; of Pedipalpi, 309 ; 

 of Spiders, 317 ; of Palpigi-adi, 422 ; of 

 Solifugae, 426 ; of Pseudoscorpions, 431 ; 

 of Podogona, 440 ; of Phalangidea, 440, 

 443 ; of Acarina, 457 ; of Peutastoinida, 

 489 ; of Pycnogonida, 502 



Abdominal glands, of Chernetidea, 432 



Abyssal region (marine), 204 ; (lacustrine), 

 209 



Acantheis, 4IS 



Acanthephyra, KiS 



Acanthephyridae, I6S 



A canthoctenus, 415 



Acanthodon, 3SS 



AcanthogavimarKs, 13S 



A cantholeberis, 53 



Acantholitkus, ISl ; A. hystrix, 178 



Acanthophrynus, 313 



Acari, 454 (= Acarina, q.v.) 



Acaridea, 454 ( = Acarina, q.v.) 



Acarina, 25S, 4-^4 f- ; parasitic, 455 ; ex- 

 ternal structure, 457 ; spinning organs, 

 457 ; internal structure, 459 ; meta- 

 morphosis, 462 ; classification, 464 



Acaste, 249 



Accola, 390 



Acerocare, 247 



Achelata, 529 



Achelia, 534 ; A. longipes, 506 



Achtheres, 75; A.percarum, 75 



Acidaspidae. 251 



Acidaspis, 226, 227, 230, 231, 235, 241, 

 251; A. dufrenoyi, 250; A. tubercu- 

 lata, larva, 240 ; .1. verneuili, 231 ; 

 A. vesicidosa, 231 



Aciniform glands, 335, 349 



Acidoides saiiidis, 367 



Acroperus, 53 ; A. hucucepladu.s, 52 



Acrosoma, 4IO 



Acrothoracica, 92 



Actaea, 191 ; habitat, 198 



Actinopodinae, 387 



Actinopus, 387 



Aculeus, of scorpion, 303 



Admetus, 313 



Aegidae, 126 



Aegisthus, 61 



Aeglea laevis, 169 ; distriiiution, 212 



Aegleidae, 169 



Aeglina, 227, 249 ; Ae. jji'isca, 248 



Agelena, 4I6 ; ^1. brunnea, 367 ; A. laby- 

 rinthica, 352, 353, 378, 380, 381, 416 ; 

 A. iiaevia, 339 



Agelenidae, 325, 352, 353, 415 



Ageleninae, 41(> 



Aggregate glands, 335, 349 



Agluspis, 279 



Agnatlianer, 66 



Agnatbonia, 529 



Agnostidae, 244 



Agnostini, 24^ 



Agnostiis, 222, 223, 225, 231, 234, 245 ; 

 A. integer, 245 



A graphs, 247 



Agroeca, 397 ; A. brwanea, cocoon, 358 



Albunea, 111 ; respiration, 170 ; distribu- 

 tion, 201 



Albuneidae, 171 



Alcippe, 92 ; A. lampas, 92. 93 



Alcock, on Oxyrhyncha, 1 92 ; on phos- 

 phorescence, 151 



Ale pas, 89 



Alima, larva of Squilla, 143 



Alimentary canal, of Crustacea, 14 ; of 

 Phyllopoda, 28 ; of Cladocera, 42 ; of 

 SquiUa, 142 ; of Malacostraca, 110 ; of 



543 



