54 8 



INDEX 



^ offammttta, 25 



Salamandra, maculosa, 429 



Salivary glands, 69 



SALMO FARIO, 392, 398 



Salpingteca, 39 



Scale-insects, 248 



Scallop, 263 



Scaphopoda. 264 



Scapula See Pectoral arch 



SCORPION, 253 et seq^ 



Scrotal sac, of Rabbit, 512 



Scutigera, 251 



Scy Ilium caniatla, 327 et seq., 365 



et seq. 



Scyphozoa, 109 et seq. 

 Scyphula, of Scyphozoa, 1 1 1 

 Sea-anemones, 92, 115^ seq. 

 Sea-cucumbers, 173 

 Sea-fans, 118 

 Sea-hares, 288 

 Sea-horse, 401 

 Sea-pens, in, 121 

 Sea-squirts, 313 

 SEA-URCHIN, 170 172 

 Seals, 519, 534 



Segmentation of oosperms, 60 

 Sense-organs, 71 

 SEPIA, 297 et seq. 

 Serpufa, 199 



Sexual reproduction, 43, 72 

 Sharks, 384 

 Sheep, 519 

 Shell, Foraminifera, 21 : Mussel, 



265 : Gastropoda, 285 et seq. : 



Cephalopoda, 300 et seq. 

 Shoulder - girdle See Pectoral 



arch 



Shrews, 520 

 Shrimps, 229 

 Simiida t 537 

 S'phonophora. 105 

 Siren lacertina, 430 

 Sirenia, 519, 530 

 Skincs, 431, 450 

 Sloths, 519, 525, 526 

 Slugs, 284, 293 

 Snails, 284 et seq. 



Snakes, 431 et seq. 



Solarium perspeclivitw, 287 



Solen, 280 



Species, definition of, I : Relation- 

 ship of, 8 



Sperms, 59, 72, 



Sphicrophrya, 51 



Spicule.s, of Sponges, 86 : of AJcyo- 

 11 iinn palmatiiin, 119 



Spiders, 253, 258, 262 



Spiny Anteater, 521 



Spiroloctilina, 25 



Spirula peronii, 300 



Sponges, 76 et seq. 



Sponge, boring, 90 



Spongelia, 87 



Sponge spicules, 88 



Spore formation, 30 



Sporocyst, 30 



Sporoducts, 58 



Sporosacs, 105 



Sporozoa, 55-58 



Squamata, 431 



Squammulina, 22 



Squids, 264, 296 et seq. 



Squirrels, 519, 534 



STARFISH, 157-168 



Stentor, 49 



Stichotricha, 53 



Sting-rays, 385-387 



Stinging capsule, 50, 96, 145 



Stomach, 68 



Stomodseum, 115 



Stony corals, 118 et seq. 



Strepsiptera, 243, 250 



Streptoneura, 295 



Stiongylocentrotus, 171 See Sea- 

 urchin 



Sturgeon, 397 



Sty last er, 105 



Sub-genital pit (Aurelid), 109 



Sub-umbrella, 97 



Summer eggs, 180 



Supporting lamella, 95 



Swift, 483 



Swimming-bell, 107 



SYCON, 76 et seq. 



Sylvian fissure, 59 



Symbiosis, 33 



