INDEX. 



715 



Scaphiopus, 484 

 Scaphirhynchops platyrhynclius, 



427 



Scapliopoda, 257, 272 

 Sceleporus undulatus, anatomy of, 



493, 504 



Schizaster fragilis, 124 

 Scbizopoda, 314 

 Scolex of tape worms, 156 



trematode worms, 150 

 Scolopendra gigantea, 358 



lieros, 358 

 Scolopeudrella, 358 

 Scomber scombrus, 456 

 Scjphophori, 449 

 Seal, 614 

 Sea-anemone, 74 

 Sea-cow, 595 

 Sea-cucumber, anatomy of, 128 



apodous, 133 



pedate, 133, 135 

 Sea-fan corals, 86 

 Sea-liorse, 443 

 Sea-lion, 614 

 Sea-pen, 86 

 Sea-squirts, 196 

 Sea-worms, 231 

 Selache maxima, 420 

 Selachians, 414 

 Semotilus rliotlieus, 453 

 Senmopithecus, 621 

 Sense, organs of, 640 

 Serolis Gaudickaudi, 306 

 Sertularia, 61 

 Sewellel, 585 



Sexual coloration in fisbes, 444 

 Shad, 450, 451 



gizzard, 443 

 Shagreen, 415 

 Shark, basking, 420 



hammer-headed, 421 



mackerel, 419 



Port Jackson, 416 



thresber, 420 

 Sharks, 414 

 Sheep, varieties of, 609 



Sheep, musk, 610 

 Sheep bydatid, 160 

 Shells, fossil, 270 

 Ship worm, 250,254 

 Showt'l, 585 

 Shrew, 587 

 Shrike, 555 

 Shrimp, 312, 314 

 Sida, 299 

 Simiae, 619 

 Siphoniata, 256 

 Siphonophora, 68, 72 

 Siphonops, 482 

 Siphydora echinoides, 47 

 Sipunculus, 221, 224 

 Siredon, 479 

 Sirenia, 595, 629 

 Siren lacertina, 478 

 Sivatherium, 605 

 Skates, 421 



development of, 419 

 Skull, brachycephalic, 627 



dolicocephalic, 627 

 Slug, 265 

 Smelt, 452 

 Smolt, 452 

 Smynthurus, 364 

 Snail, 265 

 Snake, hooded, 499 



striped, anatomy of, 498 

 Snakes, 496 



protective coloration of, 497 



viviparous, 497 

 Snipe, 545 

 Snow-flea, 364 

 Solaster endeca, 115 

 Solitaire, 547 



Somateria inollissima, 543 

 Somite, 286 

 Sorex platyrhinus, 587 

 Sounds produced by insects, 369 

 Sounds, fishes', 442 

 Spalax, 586 

 Sparrow, 555 

 Spatangus, 124 

 Specialization, 6 



