INDEX 
PRO 
Prosthéte cannelée, 416 
Protopodite, 36 
Protosquilla, elongata, Guerinii, 
287; larval form of, 290 
Protozoa, 1 
Protozoea, 217 
Prudden, Mr. T. M., on Gelasimus 
minax, 91 
Psalistoma, the ‘cutting margin 
of the mandible,’ 255 
Pseudarmadillo carinulatus, 433 
Pseuderichthus, larval form of 
Pseudosquilla, 290 
Pseudibacus Veranyi, 194 
Pseudione, callianas-z, confusa, 
Dohrni, Fraissei, Hyndmanni, 
insignis, 411. 
Pseudocalanus elongatus, parasite, 
on, 397 
Pseudocarcinus gigas, 26 
Pseudocorystes, 74; armatus, 75 
Pseudocuma, cercaria, ciliata, lon- 
gicornis, 307 
Pseudocumide defined, 307 
Pseudo-mandibles of Gnathia, 336 
~Pseudomma, 267; Sarsii, trunca- 
tum, 269 
Pseudomysis, 267; abyssi, 274 
Pseudorhombila, 93 
Pseudosiriella, 267; frontalis, 277 
Pseudosquilla ciliata, 286 
Pseudotanais, 323 
Pseudozius, Mellissi, 62; Bouvieri, 
63 
Pterelas, 349 
Pterygotus, a genus of the Mero- 
stomata, 26, 27 
Pterygostomian regions, 52 
Pterygura, 146; reason for dis- 
carding the name, 147 
Ptilanthura, 332 
Ptychogaster Milne-Edwardsi, 178 
Pycnogonida, some peculiarities of 
the, 3, 4 
Pylocheles, Agassizii, spinosus, 169 
Pylochelidz, 169; a synonym of 
Parapaguride, 170 
Pyrgoniscus cinctutus, 434 
QUALRELLA, 65 
461 
SAB 
RACHITIA spinalis, 253 
Ranina, scabra, 139 ; dentata, sca- 
bra, serrata, 140, 141 
Raninidz, 140 
Ranininea defined, 139 
Raninoides personatus, 143 
Rathbun, M:ss M, on Panopeus, 
56; on the Periceride, 120 
Rathke, H., on the cray-fish, 84, 
207 
Rathke, J., Cymothoa lignorum of, 
367 
Réaumur, on exuviation, 207 
Red Crab of the devil, 154 
Regions of the carapace, 52 
Regulus preoccupied, 239 
Remipes, 151; adactylus, scutel- 
latus, testudinarius, 152 
Respiration, see Branchiz and 
Breathing apparatus 
Rhabdosoma armatum, a slender 
species of Amphipoda Hype- 
ridea, 30 
Rhinoceros-whale, the, 25 
Rhinoryctes mirabilis, 431 
Rhipidura, or tail-fan, 46, 146 
Rhizocephala, an order of Cirri- 
pedes, 11 
Rhoda, inermis, Jardineana, Ras- 
chii, 263 
Rhomaleocaris, 242 
Rhynchocinetes typus, 228 
Rhyscotus turgifrons, 429 
River Crabs, 76 
Robber Crab, 158 
Robertson, Mr. David, observa- 
tions on Corystes cassivelaunus, 
74; Cumacea found in the Clyde 
by, 292; Leptaspidia brevipes 
found by, 381 
Rocinela, 348, 352; danmoniensis, 
signata, 349; foveolatus, 350 
Rondelet on Squilla mantis, 282 
Rumph, or Rumpbius, story attri- 
buted to, 142; his Cancer cani- 
nus, 143; on the cocoanut 
crab, 158 
SABINEA, 225; septemcarinata, 
227; larval form of, 228 
