INDEX 



Every reference is to the 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 page or pages ; n. = note. 



Abalius, 312 



Abdomen, of Malacostraca, 110 ; of Acan- 

 tlwlithus, 178 ; of Birgus, 176 ; of 

 Cenobita, 176 ; of Dennaturus, 178 ; of 

 HapalogcisteTy 178 ; of Lithode^, 178 ; 

 oiPylopagurus, 178 ; of Trilobites, 235 ; 

 of Scorpions, 297 ; of Pedipalpi, 309 ; 

 of Spiders, 317 ; of Palpigradi, 422 ; of 

 Solifugae, 426 ; of Pseudoscorpious, 431 ; 

 of Podogona, 440 ; of Phalangidea, 440, 

 443 ; of Acarina, 457 ; of Pentastomida, 

 489 ; of Pycnogonida, 502 



Abdominal glands, of Chernetidea, 432 



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

 209 



Acantheis, 4^8 



Acanthejjhyra, 163 



Acanthephyridae, 163 



Acanthoctenus^ 415 



Acanthodon, 388 



Acanthogammarus, 138 



Acantholeberis, 53 



Acantholithus, 181 ; A. hystrix, 178 



Acanthophrynus, 313 



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



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



Acarina, 258, 454 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, i51 



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

 Z51 ; A. dufrenoyi, 250; A. tubercu- 

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

 A. vesiculosa, 231 



Aciniform glands, 335, 349 



Acoloidcs sailidis, 367 



Acroperus, 53; A. leitcocephalus, 52 



Acrosoma, 410 



Acrothoracica, 9^ 



Actaea, 191 ; habitat, 198 



Actinopodinae, 387 



Actinop-us, 387 



Aculeus, of scorpion, 303 



Admetus, 313 



Aegidae, 126 



Aegislhus, 61 



Aeglea laevis, 189 ; distribution, 212 



Aegleidae, 169 



Aeglina, 227, 249 ; Ae. prisca, 248 



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

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

 A. naavia, 339 



Agelenidae, 325, 352, 353, 415 



Ageleninae, 41^ 



Aggregate glands, 335, 349 



Aglaspis, 279 



Agnathaner, 66 



Agnathonia, 529 



Agnostidae, 244 



Agnostini, 24^ 



Agnostiis, 222, 22s, 225, 231, 234, 245; 

 A. integer, 245 



A gr aulas, "247 



Agroeca, 397 ; A. brunnea, cocoon, 358 



Albunea, 111 ; respiration, 170 ; distribu- 

 tion, 201 



Albuneidae, 171 



Alcippe, 92 ; A. lampas, 92, 93 



Alcock, on Oxyrhyncha, 192; on phos- 

 phorescence, 151 



Alepas, 89 



A lima, larva of Squilla, 143 



Alimentary canal, of Crustacea, 14 ; of 

 Phyllopoda, 28 ; of Cladocera, 42 ; of 

 Squilla, 142 ; of Malacostraca, 110 ; of 



543 



