INDEX. 



Ah-actinal area of Starfish, 57 ; of Sea 

 Urchin, 83. 



Abdomen of Anodonta, 276, 285 ; of 

 Crab, 171 ; of Crab Megalops, 220, 

 217 ; of Crah Zoea, 20" ; of Cyclops, 

 225, 220, 230 ; of Grasshopper, 238, 

 250 ; of Crayfish, 185, 186 ; of Lob- 

 ster, 186. 



Abdominal artery of Crab, 185 ; gan- 

 glia of Grasshopper, 264. 



Ab-oral surface of Starfish, 57; of 

 Sea Urchin, 83, 87; tentacles of 

 Starfish, 63, "5. 



Act-tabula of Squid, 337. 



Actinal surface of Sea Urchin, 83, 87 ; 

 of Starfish, . r >7. 



Alveola of Sea Urchin, 95, 97. 



Ambulacra of Sea U rchin, 84 ; of Star- 

 fish, 63, 69, 76. 



Ambulacra! area of Sea Urchin, 88; of 

 Starfish, 60, 61; furrow of Star- 

 fish, 57; ossicle, 58, 61, 76, 88, 89; 

 pores of Sea Urchin, 88; pores of 

 Starfish, 60, 61; suture, 88; sys- 

 tem, 68, 69, 76; tube of Sea 

 I" rchin, 91, 98; tube ' of Starfish, 

 58, 78; vesicle of Sea Urchin, 91, 

 98 ; vesicle of Starfish, 69. 



Amoeba, i. : contractile vesicle, 6 ; 

 ectosarc, 4 ; endoplast, 6 ; endosarc, 

 4; food vacuole, 5; pscudopodia, 4. 



ArapulUe of Sea Urchin, 91, 98; of 

 Starfish, f>9. 



Anal plates of Sea Urchin, 85. 



Anal valve of Squid, 378. 



Annuli of Leech, 160. 



Anodonta, xxv. : abdomen, 276, 295 ; 

 adductor muscles, 272; arms, 274, 

 284; aorta, 281, 282 ; auditory organ, 

 281 ; auricle, 281, 282, 293 ; bile duct, 

 296; body-cavity, 286, 287, 289, 290, 

 293; Bojanus' organ, 281, 282,290, 

 293, 294, 295; branchial chamber, 

 274, 288, 291 ; branchial current, 27'2 ; 

 branchial siphon, 272; branchial slits, 

 277; byssus of larva, 331; cloa<-:il 

 chamber, 277, 288, 291 ; cloacal siphon, 

 272; digestive organs, 284; dorsal 

 edge, 271; epidermis, 271, 273; foot, 

 272, 276, 294, 295 ; general anatomy, 

 xx v. ; gills, 276, 277, 288, 200, 291, '2!2 ; 

 integument, 287 ; intestine, 283 ; 

 287; heart, 281, 282, 293, 294; 

 hinge-ligament, 271 ; hinge-teeth, 

 273; labial palpi, 276; larva, 330; 

 lines of growth, 271 ; liver, 284, 

 296; mantle, 274, 287; mantle 

 chamber, 286, 288, 290, 291; man- 

 tle muscles, 274; mesentery, 290; 

 mouth, 276, 284; muscles, 290; pal- 

 lial line, 272; parasitism of larva, 

 332; parieto-splanchnic ganglia, 288; 

 pearly layer, 273 ; pedal ganglia, 296 ; 

 pericardium, 274, 281, 293 ; posterior 

 end, 271; prismatic layer; protrac- 

 tor muscles, 273; rectum, 274, 2S4, 

 286; renal organ, 281, 282; repro- 

 ductive organs, 296 ; retractor mus- 

 cles, 273; setae of larva, 332; shell, 

 271 ; shell of larva, 331 ; sinus veno- 

 sus, 294 ; siphon, 272 ; stomach, 284, 

 283 ; transverse sections, xxvi ; umbo, 



