Index 
Polynoidae, 301. 
Pontonia, 38, 39. 
californiensis, 38, 281, 312. 
margarita, 39. 
Pontoniidae, 26, 37, 38: 
pools, tide, 49, 65, 69, 80, 109, 274, 
296. 
Porcellana cinctipes, 179. 
rupicola, 179. { 
Porcellanidae, 109, 174. 
Portunidae, 216, 236. 
Portunus, 236, 237. 
xantusli, 237, 282, 283, 319. 
Prawn, 46. 
prionota, Spirontocaris, 52. 
prionota, hippolyte, 52. 
Spirontocaris, 50, 52, 282, 284, 313. 
Pristopus verrilli, 159. 
Processa, 81. 
canaliculata, 81, 284, 285, 314, 382. 
processa, 81. 
processa, Processa, 81. 
Processidae, 80. 
productus, Cancer, 102, 217, 219, 220, 
2292, 231, 288, 293, 295, 296, 297, 
319, 325, 327, 329, 331, 333, 335, 
339, 352, 368. 
Epialtus, 201, 202, 283, 295, 296, 
318, 333, 352. 
Pseudograpsus nudus, 273. 
oregonensis, 274. 
pubescens, Pachycheles, 175, 177, 282, 
284, 317, 424. 
pugettensis, Gebia, 115. 
Upogebia, 10, 115, 283, 295, 315, 
352. 
Pugettia, 193, 205. 
dalli, 205, 208, 284, 318, 424. 
gracilis, 205, 206, 282, 318, 424. 
richii, 205, 206, 207, 208, 282, 318, 
424, 
Pylopagurus, 122, 128, 143. 
discoidalis, 145. 
holmesi, 10, 121, 130, 144, 145, 282 
316. 
Minimus, 121, 125, 130, 144, 282 
293, 294, 316, 335, 390. 
Pythina rugifera, 116. 
quadrata, Munidopsis, 168, 170, 283, 
285, 317. 
quadrispina, Munida, 165, 282, 285, 
Bulli 
quinqueseriatus, Calastacus, 111, 112, 
113, 315. 
Randallia, 11, 187. 
bulligera, 187, 189, 284, 318. 
ornata, 10, 153, 187, 188, 189, 284, 
293, 294, 318, 353. 
Raphonotus lowei, 254. 
subquadratus, 2538, 254. 
rathbunae, Petrolisthes, 9, 179, 181, 
281, 317, 422. 
rathbuni, Homola, 185. 
Lithodes, 160. 
Paralithodes, 160, 161, 317, 410, 412, 
416, 418. 
Paromola, 185. 
red crab, 222. 
Reptantia, 18; 104. 
resima, Crago, 83, 96, 97, 100, 284, 
293, 294, 315, 335. 
Crangon, 96. 
Rhinolithodes, 147, 157. 
wosnessenskii, 158, 282, 317, 402. . 
wossnesenskii, 158. - 
Rhodia parvifrons, 215. 
richii, Pugettia, 205, 206, 207, 208, 
282, 318, 424. 
ritteri, Palaemon, 35, 284, 312. 
rock-boring mollusk, 268. 
rock crab, 225, 
rostratus, Anasimus, 196. 
rudis, Pachycheles, 175, 176, 283, 317, 
424. 
rufescens, Haliotis, 79. 
rugifera, Pythina, 116. 
rugosa, Cycloxanthops, 240. 
rugosus, Cycloxanthops, 239, 240, 281, 
Bley 
rupicola, Porcellana, 179. 
samuelis, Pagurus, 129, 138, 139, 140, 
141, 281, 284, 293, 295, 316, 352, 
390. 
sarraburei, Dromidia, 183. 
Saxidomus, 259, 260. 
Schizothaerus, 259, 260, 268. 
schmitti, Pinnixa, 257, 264, 267, 282, 
295, 297, 321, 325, 327, 339, 376, 
442. 
Scleroplax, 250, 267. 
granulata, 102, 267, 283, 293, 295, 
321, 333, 446. 
Seyllaridae, 105. 
Seyllaridea, 105. 
Scyra, 194, 213. 
acutifrons, 214, 282, 319. 
sea cucumber, 261, 440. See also holo- 
thurian. 
sea-urchins, 79, 80. 
seaweed(s), 68, 187, 196, 211, 296. See 
also algae and corallines. 
segnipes, Dromidia, 185. 
Sergestes, 9, 19. 
atlanticus, 19. 
mollis, 20. 
similis, 19, 312, 382. 
species indeterminable, 19, 20. 
Sergestidae, 19, 106. 
serrata, Parapasiphae, 31, 312. 
setosus, Hupagurus, 136. 
Pagurus, 128, 133, 136, 137, 316. 
shell(s), 187, 267, 297, 324, 326, 328, 
330, 332, 334, 336, 338, 340. Sre 
also mollusk(s). 
shore erab, 271. 
