INDEX 



. ABD 



Abdomen, alias postabdomen, 



tail, or pleon, 32, 45 

 Abdominalia, an order of Cirri- 



pedes, 1 1 

 Acanthaspidia (new name) typh- 



lops, 378 

 Acanthephyra, range of, 243; 



Agassizii, microphthalma, pur- 

 purea, 243 ; pellucida, sica, 



244 

 Acanthephyridse, defined, 242 

 Acantliias vulgaris, devoured by 



isopods, 344 

 Acanthocope, acutispina, spini- 



cauda, 387 

 Acanthocyclus Gayi, 71 

 Acanthomunna proteus, 381 

 Acanthonirscus spinlger (family 



Oniscidas), 432 

 Acanthoniscus (preoccupied) ty- 



phlops (family Asellidae), 378 

 Acanthoplax, 93 

 Acanthopus (preoccupied) clavi- 



manus, habits of, 98 

 Acanthosoma, a larval Sergestes, 



221 

 Acetes, 221 ; indicus, found in the 



Ox-ray, 222 

 Acheeus Cranchii, 106 

 Acicle, antennal scale or exopod, 



146, 149, 155 

 A'^.tfficia, Aucklandiae, euchroa, 



431 

 Actaeomorpha, a doubtful genus, 



127 

 Acfeoniscus ellipticus, 431 



ALT 



Adamsia palliata, the hermit-crab's 



associate, 167 

 Mga,, 348 ; bicarinata, rosacea, 



St romii, ti-idens, 348 ; crenulata, 



emarginata, Loveni, monoph- 



thalma, psora, Schioedteana, 



spongiophila, 349 

 J^^gacylJa, 349 

 ^Egathoa loliginea, 353 

 iEgidae, how discriminated, 347 

 Agassiz, Alex., 29 

 Aka-oni-gani, 154 

 Alaotanais, priority of, considered, 



324; serratispinosus, 327; Isevi- 



spinosus, 328 

 * Albatross,' U.S.S , 28, 30 

 Albunea symnista, 152 

 Albuneidse delined, 152 

 Alcirona, insularis, Krebsii, 346 

 Alcironidge defined, 346 

 Alcyonium butchered to make a 



Maia's finery, 112 

 Alert,' H.M.S., 154 

 A lima, larval Squilla, 290 

 Alimerichthus, larval Squilla, 



290 

 Alitropus, foveolatus, typus, 347, 



348 

 Alloniscus, cornutus, mirabilis, 



perconvexus, 431 

 Alphfcidfe defined, 230 

 Alpheus, 230; affinis, avarus, coma- 



tularum, Edwardsii, megacheles, 



minus, 231 ; sivado, 251 

 Alternating forms of male in 



Cambaroides, 208; in Cam- 



