INDEX. 



699 



Strobila, 249, 278 



Strongylidse, 301 



Strongyloides, 300 



Strongylocentrotus, 345 



Strongylosoma, 497 



Struggle for existence, 44 



Struthio, 613 



Struthiones, 613 



Sturgeon, 573 



Sturgeon, tail of, 41 



Stylaster, 241 



Style, crystalline, 364 



Stylochus, 271 



Stylohyoid ligament, 621 



Styloid process, 621 



Stylommatophora, 383 



Stylonychia, 211, 212 



Stylopidse, 483 



Stylops, 483 



Subcutaneous tissue, 514 



Subintestinal ganglion, 374 



Subintestinal vein, 548 



Submentum, 464 



Subneural gland, 509 



Subumbrella, 234 



Suckers, 576 



Suck fish, 577 



Suctoria, 212 



Suidse, 641 



Sulci, 535 



Summer eggs, 416 



Sun animalcules, 190 



Supporting cells, 83 



Supporting layer, 230 



Supraintestinal ganglion, 374 



Supraoccipital bone, 522 



Supracesophageal ganglion, 123 



Suprascapula, 528 



Surf perch, 577 



Sus, 641 



Swallows, 616 



Swallow tails, 496 



Swammerdam, 13 



Swans, 615 



Swarm spores, 185, 195 



Sweat glands, 618 



Swell fish, 578 



Swim bladder, 547 



Swimming bell, 243 

 Swimming birds, 614 

 Swine. 641 

 Sword fish, 577 

 Sycandra, 222, 225 

 Sycon, 223, 225 

 Sy cones, 225 

 Syllidse, 313 

 Syllis, 311 

 Sylvicolidse, 616 

 Sylvius. 12 

 Symbiosis, 169 

 Symmetry, 134 

 Sympathetic coloration, 46 

 Sympathetic system, 537 

 Symplectic bone, 561 

 Symphyla. 497 

 Synapta, 349 

 Synapticula, 257 

 Synascidise, 510 

 Syncitia, 71 

 Synccelidium, 269, 271 

 Syncoryne, 241 

 Synentognathi, 575, 576 

 Syngamus. 301 

 Syngnathus, 578 

 Syringopora, 259 

 Syrinx, 608 

 Syrphidse, 493 

 Systems oi organs, 100 

 Systemic circulation, 549 

 Systemic heart, 391 



Tabanidae, 493 



Tabulae, 257 



Tabulatse, 257 



Tactile bristles, 126 



Tactile corpuscle, 537 



Tactile organs, 125 



Tadpole, 586 



Tadpoles of Rana temporaria, 35 



Taenia. 169, 279, 282 



Tseniadas, 287 



Tseniolse, 246 



Tsenioglossa, 380 



Talpa, 637 



Talpidse, 637 



Tanais, 442 



