718 
Saururer, 587, 557 
Saw fish, 421 
Saw fly, 360 
Saxicava, 230 
Scalpellum, 278 
Scaphiopus, 484 
Scaphirhynchops platyrhynchus, 
427 
Scaphopoda, 237, 252 
Sceleporus undulatus, anatomy 
of, 493, 504 
Schizaster fragilis, 206 
Schizopoda, 294 
Scolex of tape-worms, 114 
trematode worms, 108 
Scolopendra gigantea, 338 
heros, 338 
Scolopendrella, 344 
Scomber scombrus, 456 
Scyphophori, 449 
Seal, 614 
Sea-anemone, 74 
Sea-cow, 595 
Sea-cucumber, anatomy of, 210 
apodous, 215 
pedate, 215, 217 
Sea-fan corals, 86 
Sea-horse, 443 
Sea-lion, 614 
Sea-pen, 86 
Sea-squirts, 386 
Sea-worms, 169 
Selache maxima, 420 
Selachians, 414 
Semotilus rhotheus, 453 
Semnopithecus, 621 
Sense, organs of, 640 
Serolis Gaudichaudi, 286 
Sertularia, 61 
Sewellel, 585 
Sexual coloration in fishes, 444 
Shad, 450, 451 
gizzard, 443 
Shagreen, 415 
INDEX. 
Shark, basking, 420 
hammer-headed, 421 
mackerel, 419 
Port Jackson, 416 
thresher, 420 
Sharks, 414 
Sheep, varieties of, 609 
Sheep, musk, 610 
Sheep hydatid, 118 
Shells, fossil, 270 
Ship worm, 250, 254 
Showt’l, 585 
Shrew, 587 
Shrike, 555 
Shrimp, 292, 294 
Sida, 279 
Simiz, 619 
Siphonaptera, 355 
Siphonophora, 68, 72 
Siphonops, 482 
Siphydora echinoides, 47 
Sipunculus, 159 
Siredon, 479 
Sirenia, 595, 629 
Siren lacertina, 478 
Sivatherium, 605 
Skates, 421 
development of, 419 
Skull, brachycephalic, 627 
dolicocephalic, 627 
Slug, 245 
Smelt, 452 
Smolt, 452 
Smynthurus, 344 
Snail, 245 
Snake, hooded, 499 
striped, anatomy of, 499 
Snakes, 496 
protective coloration of, 
497 
viviparous, 497 
Snipe, 545 
Snow-flea, 344 
Solaster endeca, 115 
