600 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



Page 



shrimp — Continued 



infection by Thelohania 251 



mortality rate 459 



movement of adult 458, 459 



movement of young 457, 458 



number of eggs laid 457 



o viposition 457 



pink 457 



productivity 251 



spawning 457 



stages of development 457 



White (Lake) 211,457 



young 457 



shrimp ground community 211 



shrimp grounds 206 



Shuler, R. H 351 



Siboga 279 



Sierra Madre Oriental 45 



Sierra Neo-Volcanica 45 



Sigsbee, Commander 25 



Sigsbee Deep 28,30, 68, 75 



Siguenza y Gongora, C. de 17 



silica 



as limiting factor 163 



effect on diatoms 230, 231 



silicon, in sea water 149 



silting on Mexican Coast 574 



sil verside 508 



Simpson, C. T .._. 469 



Singley, J. A 470 



Siphonaria pectinata 210 



siphonophores, list of species 275 



Sipunculida 419 



Sirenia 543 



Sisler, F. D 217,220 



Skeletonema 166 



Skogsberg, T 225 



Skujaella 163, 166 



Slocum, G 131 



Small, J. K 193 



Smith, F.G.W 125, 143, 145, 146, 147, 148, 



171, 173,174, 175, 223, 263, 265, 291, 293, 463, 513 



Smith, H.P 146 



Smith, P. A 72,81 



smooth cordgrass 197 



snappers 



black fin . 508 



gray 508 



Lane 508 



red 508 



schoolmaster 508 



silk or yellow eye 508 



yellowtail 508 



snook 508 



distribution 504 



soda, production of 153 



sodium chloride in sea water 153 



Soley'schart 28, 29 



solids in sea water 149 



Sommer, H 174 



Page 



Sophora lomenlosa 195, 196 



Sorgnit, E. F 135 



spanish-bayonet 199 



sparrow. Cape Sable 533 



Sparrow, F. K 220 



Spartina 51 



Spartina allerniflora 197 



resistance to flooding 198 



spat , number of 482 



spatfall 487 



oyster 482 



Specht, R. C 555 



species mass 204, 507 



Spencer, J. W 67 



sperm whale 546 



pygmy 547 



spermatophy tes 193 



Sphacelaria 185 



Sphaerothuria, key to Gulf species 400 



Spheciospongia 259 



Spinosella . 264 



Spiochaetopterus 207 



spirochaetes, in mollusks 245 



sponges 259, 263 



biology 263 



boring 259, 486 



commercial 259, 263 



growth 265 



habitat_.'_ 264 



cultivation 265 



dredging 260 



embryo 263 



farms 260 



fat content 264 



food of 263 



grounds 203, 206 



hooking 259 



investigations 26 



necrosis 264 



oyster 488 



pumping of water 264 



reefs 259 



regeneration after dissociation 265 



sexual reproduction 263 



sheepswool 263, 265 



velvet 263, 265 



Spongia graminea 263 



Spongia officinalis 263 



Spongia zimocca 263 



Spongin ^ . 263 



spoonbill 534 



Sporozoa 247 



spot 509 



Sprague, V 243,244,249 



springtide 110, 111, 113 



Sprunt, A 534 



Spyridia 183, 186 



Spyridia filamenlosa 180 



squeteague 509 



Squilla empusa 211 



