"Prosobranchs," 177 

 Prostheceraeus, 1 24 

 PioMoiua. 131 

 Prostomium, 157 

 Protista, 17 

 Protoplasm. 18 

 Prolozoa. 15, 16 

 Psaminechintis, 283 

 Pseudoceros (35) 

 Pseudopods, 28 

 Pseudoscorpionida, 248 



Pseudoscorpions, 248 

 Pseudosqiiilla (91 ) 

 Psilasler. Ill 

 Psolidiiiin, 275 

 Psoliis. 275 

 Pteraster. 279 

 Pteropods, 177 

 Plerosagitta. 145 

 Ptychodera, 146, 147* 

 "Pulmonates," 111 

 "Purple sailor," 75 



•■Purple shell." 179 

 Purples (54) 

 Pyciiogonida, 252, 253* 

 Pycnopodia. 280 (128) 

 Pyrosoma. 287 

 Pyrosomes, 287 



Quahog, 190 

 "Quarter-deck shell," 180 



R 



Radial symmetry, 14 

 "Radiolarian ooze," 32 

 Radiolarian shells, 32* 

 Radiolarians, 16*, 31 

 Radula, 158, 177, 194 

 Ragworm, 201 

 Razor clams, 189, 192* 

 Razor shell, 192* 

 Red snow, 25 



"Red spider," 252 

 "Red tides," 23 

 Reef corals, 109, 111 (28) 

 "Respiratory trees," 273 

 Rhabdocoels, 121 

 Rhahdopleura, 147 

 Rhinophores, 182 

 Rhizopoda. 28 

 Rhizostoina, 97* 



Rhopilenui, 77 



Ribbon worms, 129, 131*, 132* 



(37) 

 Robber crab, 238 ( 102) 

 Rotifera, 15, 18*, 138, 139* 

 Roundworms. 133 

 Royal purple, 181 



Sabellaria (86) (87) 



Sabellids, 203, 205* (83) 



Saccoglossus, 146 



Sacculina, 233 



Sagartia. 108 



Sagitta. 144, 145* 



Salps, 286*. 288 



Salt-marsh snails, 177 



Saliicus. 245 



Sand dollar, 254, 280, 283, 285- 



Saprozoic, 20 



Sarcodina, 28 



Sarcoptes. 251 



Sarsia. 73 



Saxicava, 190 



Scale worms. 202, 206* (85) 



Scallops. 158*, 186, 189* 



(41-43) 

 Scaphopoda, 193, 198* 



Schislosoiiui. 119, 126 



Scleractinian corals, 109 



Scolex, 126 



Scolopendra. 241 (117) 



Scorpio. 247 



Scorpionida, 247 



Scorpions, 247, 251* 



Scuds, 235 



Scutigera, 240* 



Scylluea (68) 



Scyphozoa, 70, 76 



Scyphozoans, 68, 77 



Sea anemones, 104 (13-22), 



(32) 

 "Sea arrowheads." 284 

 Sea bat, 278 (126) 

 "Sea beef," 159 

 "Sea biscuit," 283 

 Sea blubbers, 80 



"Sea butterflies," 159, 177*, 



197* 

 Sea collar, 179 

 Sea cradle, 158*, 159 

 Sea cucumbers, 254*, 273, 275* 



(140) (141) 

 "Sea egg," 283 



Sea fans, 65*, 97, 101, 102 (11) 

 "Sea ferns," 69 

 Sea fingers (9) 

 "Sea firs," 70 



"Sea gooseberries," 115, 116* 

 Sea grapes, 287 

 Sea hare, 182 (60) 

 Sea lilies, 254*, 255, 256 

 Sea mouse, 202 (85) 

 Sea nettle, 79* 

 "Sea pancake," 284 



[301 



