INDEX. 



391 



357; liver of, ai4, 347; mantle of, 

 334, 362, 378 ; mantle aitery of, 340, 

 343; mantle cartilage of, 338; man- 

 tle chamber of, 334, 337 ; mantle cir- 

 culation of, 376 ; mantle develop- 

 ment of, 367; micropyle of, 364; 

 mouth of, 348, 355 ; mouth develop- 

 ment of, 368 ; muscles of, 338, 355, 

 361 ; neck of, 338 ; nervous system 

 of, 348,353; nidamental gland of, 338, 

 352 ; odontophore of, 356 ; cesophagus, 

 346, 347, 348, 357 ; cesophagus devel- 

 opment of, 369 ; olfactory organ of, 

 333 ; otocyst of, 372 ; ovary of, 348, 

 353; oviduct of, 353; pen of, 335, 

 363, 368 ; pericardium of, 343 ; pros- 

 tate gland of, 350, 352 ; pupil of, 358 ; 

 rachis of, 357 ; radula of, 357 ; rec- 

 tum of, 338, 346, 371; regions of 

 body of, 334 ; renal organ of, 340, 341 ; 

 reproductive oi^ans of, male, 349; 

 repj-oductive oi-srac* of, female, 352 ; 

 retina of, 359; sa. > ./v gland of, 347, 

 segmcuition of, 3t)a; shell of, 335, 

 363, 368; shell gland of, 368; siphon 

 of, 336, 338, 339, 361, 370 ; siphon de- 

 velopment of, 368 ; siphon valve of, 

 336, 377 ; siphonal cartilage of, 338 ; 

 speiTUatophore of, 352; sperraato- 

 phore receptacle of, 350, 351 ; sperma- 

 tozoa of, 352 ; spleen of, 345, 346 ; 

 stomach of, 346 ; systemic heart of, 

 345; testis of, 348,349; vas deferens 

 of, 350 ; vas eflferens of, 351 ; vena 

 cava anteiior of, 341, 344, 362 ; vena 

 cava posterior of, 340, 343 ; vesicula 

 seminales of, 350; visceral sac of, 

 341 ; vitreous humor, 359. 

 Starfish,ix.,x. , xi. ; ab-actinal surface of, 

 57 ; ab-oral tentacle of, 63, 75 ; actinal 

 surface of, 57 ; ambulacra of, 63, 69, 

 76 ; ambulacral area of, 60, 61 ; am- 

 bulacral fun-ow of, 57 ; ambulacral 

 pore of, 57 ; ambulacral system of, 

 68, 69, 76 ; ambidaci-al vesicle of, 69; 

 ampullae of, 69 ; anterior ray of, 57 ; 

 bivium of, 58; blood-vessels of, 71, 



77 ; digestive organs of, 63 ; heart of, 

 71 ; hepatic coeca of, 63, 64, 75 ; inter- 

 ambulacral area of, 61 ; inter-radius 

 of, 57, 65 ; inter-radial partition of, 

 62 ; intestine of, 65 ; madreporic 

 body of, 57, 69 ; microscopic struct- 

 ure of, xi. ; mouth of, 57 ; nei-vous 

 system of, 70, 71 ; oesophagus of, 68; 

 ossicle of, 58, 59, 61, 75, 76; pedicel- 

 larifE of, 58, 73 ; pericardium of, 71 ; 

 perihjemal vessel of, 71, 72, 76; peri- 

 soma of, 57; peristome of, 63, 68; 

 polian vesicle of, 69 ; pyloric sac of, 

 64 ; racemose vesicle of, 70 ; repro- 

 ductive organs of, 68; respij-atory 

 tree of, 65 ; stomach of, 63, 65, 67, 

 75; stomach muscles of, 68; stone 

 canal of, 71 ; swimming lai-va of, 

 130 ; trivium of, 58 ; vertebral ridge 

 of, 60 ; water system of, 68, 69, 76. 



Sternal artery, 195; plastron, 174, 183, 

 171. 



Sternum, 173, 184. 



Stipes, 246. 



Stomach of Anodonta, 284, 296; of 

 Ci-ab, 190, 200; of Zoea, 209; of 

 Stai-fish, 63, 65, 67, 68 ; of Hydro 

 Medusa, 41; of Leech, 163, 164; of 

 Squid, 346. 



Stomato-gasti-ic ganglia, 167. 



Stone canal, 71, 93. 



Sub-genital plate, 251. 



Submentum, 245. 



Sub-oesophageal ganglia, 264. 



Sub-umbrella, 39. 



Supporting layer, 33, 45, 48. 



Supra-cesophageal ganglia, 263. 



Surface collecting, 37. 



Swimmeret, 186, 188. 



Syncitium, 29, 



Systemic heart of Squid, 345. 



Tarsus, 242. 



Teeth, 84, 85, 97. 



Tegmina, 238. 



Telson, 186, 207, 214, 217. 



Tentacles ab-oral, 63, 75 ; of Hydro 

 Medusa, 40, 45- 



