344 



THE CRUSTACEA 



PolllphemMs, 54 

 Pontella, 79, 102 

 Pontellidae, 84. 102 

 Pontocj/pris, 58, 67, 69 

 Pontogencia, 241 

 Pontogeneiidae, 241 

 Pontonia, 311 

 Pontoniiiiae, 305, 311 

 Porcellana, 302, 303, 313 

 Porcellaiiidae, 313 

 PorceUidium, 103 

 Porcellio, 197, 206, 220 

 Portiimninae, 315 

 Portumnus, 315 

 Portunidae, 315 

 Portiininae, 315 

 Portunion, 215, 216, 221 

 Portunus, 315 

 Post-abdomen, 33 

 Post-ceplialic appendages, 



12 

 Potaiiwbiiis. 312 

 Potamo/i, 315 

 Potamonidae, 303, 304, 



315 

 Potamoninae, 315 

 Praeanaspufes, 16S 

 Praniza, 219 

 Praunus, 181 

 Pre-coxal segment, 7 

 Priapion, 212, 221 

 Primitia, 68 

 Prionoplacinae, 315 

 Prio»i02>ki:'\ 315 

 Processa, 311 

 Processidae, 311 

 Proctodaeum, 14 

 Proepipodite, 146 

 Prouoe, 241 

 Pronoidac, 241 

 Propodite, 146 

 Pi'opodus, 146 

 Prosoma of Cinipedia, 113 

 Prosopon, 308 

 Prosoponidae, 307 

 Proteolepadidne, 140 

 Protcolepa.% 107, 128, 129, 



139, 140 

 Proto, 231, 242 

 Protocaris, 50 

 Protocerebrum, 1 7 

 Protopodite, 7 

 Protosquilla, 321 

 Protozoea, 293, 295, 297, 



303 

 P,salidopodidae, 311 

 Psalidopus, 271, 272. 311 

 Psathyrocaris, 270, 311 

 Pseuderichthus. 328, 329 

 Pseudidothea, 220 

 Pseudidotlieidae, 220 



PseHdocalanus, 102 

 Pseudocuiiia, 188 

 PseudoL'umidae, 188 

 Pse udoci/clopiia , 102 

 PseiidocyclojDidae, 102 

 Pseudocyclops, 102 

 Pseududiaptomus, 102 

 Pseudouuna, 173, 181 

 Pseudorostruiu of C'uma- 



cea, 184 

 Pseudosquilln, 328, 331 

 Pseudolhelphusa, 315 

 Pseudotlielphnsiuae, 315 

 Pseudo-tracheae of Isopoda, 



205 

 Ptenoplacinae, 315 

 Ptenoplax, 315 

 Pterocxima, 185, 188 

 Pupa of Cirripedi;!, 123, 



124 

 Pupal stage of Lernaca, 



91 

 Pj'cnogonida, 3 

 Pygocephahis, 180, 181 

 p)/locheles. 261, 313 

 Pvlochelidae, 259, 277, 



304, 313 

 Pyrgoma, 111, 140 

 Pyrocypiria, 64, 69 



Radius of Cirripedia, 111 



Ranina, 264, 314 



Raninidae, 256, 290, 314 



Eathke, 254 



Rathke's organ, 208 



Reaumur, 254 



Receptacula seniiuis, 21 ; 

 in Decapoda, 290 (see 

 Sperm atlieca) 



Regeneration, 10, 271 



Remipes, 314 



Reproductive system, 21 ; 

 of Ainpliipoda, 237 ; of 

 Brancliiopoda, 47 ; of 

 Branchiura, 99 ; of Cir- 

 ripedia, 117 ; of Cuma- 

 cea, 187 ; of Decapoda, 

 289 ; ofEucopepoda, 86 ; 

 of Euphausiacea, 248 ; 

 of Isopoda, 211 ; of 

 Leptostraca, 158 ; of 

 Mysidacea, 179 ; of Os- 

 tracoda, 66 ; of Rliizo- 

 cejihala, 131 ; of Sto- 

 matopoda, 325 ; of Syn- 

 earida, 167 ; of Tanai- 

 dacea, 193 



Reptantia, 253 ; definition, 

 312 



Respiratory system of ter- 

 restrial Decapoda. 284 



Resting eggs of Branchio- 

 poda, 47, 49 



Retinula cells, 18 ' 



Rhabdome, 18 



Rhabdomeres, 19 



Rhahdosoma, 226, 241 



Rhincalanus, 79, 102 



Rhizocephala, 1, 106, 107 ; 

 definition, 141 ; develop- 

 ment, 133 ; morphology, 

 130 



Rhizopa, 315 



Rhizopinae, 315 



Rhizorhina, 93, 104 



Rhynchocinetes, 255, 311 



Rhynchocinetidae, 311 



Rocinda, 199, 220 



Rondelet, 254, 319 



Roots of Anelasma, 138 ; 

 of Liriopsidae, 217 ; of 

 Rhizocephala, 130, 132 ; 

 of Rhizorhina, 93 



Roseuhof, 254 



Rostral plate of Lepto- 

 straca, 152 ; of Stomato- 

 poda, 320 



Rostro- lateral plates of 

 Cirripedia, 111 



Rostrum of Copepoda, 74 ; 

 of Cirripedia, 110 ; of 

 Decapoda, 255 



RiUiderma, 69 



Rutidermatidae, 69 



Saccidiiia, 107, 130-134. 

 141 ; externa, 137 ; 

 interna, 135 



Saint- Ange, Martin, 107 



Sapphirina, 103 



Sarcotaces, 137 



Sars, G. O., 30, 40, 56,68, 

 72, 102, 103, 151, 171, 

 181, 183, 190, 191, 196, 

 214, 218, 225,244, 249, 

 250, 251 



SarsieUa, 59, 60, 62, 66. 

 69 



Sarsiellidae, 69 



Savigny, 3 



Say, 183 



Sayce, 0. A., 162 



Scale of antenna, 11 ; in 

 Euphausiacea, 245 ; iu 

 Decapoda, 265 ; in Iso- 

 poda, 198 ; in M.alaco- 

 straca, 145 ; in Mysi- 

 dacea, 173 ; in Stomato- 

 poda, 321 ; in Tanai- 

 dacea, 191 



ScaipeUum, 110, 116, 118, 



' 119, 121, 138, 140 



