415 



Rissoa eburnea Stimpson, 14. 



exnrata " 15. 



Muihehii, 15. 



midtilineatn Stimpson, 14. 



pelapjica, 15. 



j)upoidea Stimpson and Kurtz, 



114. 

 Rules for admission of visitors, 329. 



Salamandra symmetrica, ejected from 

 the human stomach, 70. 



Salamandra symmetrica, range of, 147. 



Salmo Oquassa Girard, 262. 



Sand and mud tracks, 94. 



Sandstone, Clinton, track in, 166. 



of Connecticixt valley, 378. 



Sanguineous glands in sheep, 259. 



Sarracenia variolaris, 189. 



Sauropus primsevus, 241. 



Sclerodactyla, gen. Ayres, 6. 



"- — briareus, 6; habits and 



structure of, 101. 



Shark, new species of, 202. 



Shai-k, thresher, capture of, 205. 



Shaw, B. S. elected recording secretary, 

 376. 



Sheet iron, manufacture of, 296. 



Shells of east and west coast of North 

 America, differences in, 27. 



Shells of New England, new species of, 

 113. 



Shells of southern coast of the United 

 States, new species of, 114. 



Shells, land, differences related to geo- 

 logical formation, 100. 



Silurian svstem, vertebrata and copro- 

 lites in, '169. 



Sienite of Nahant, nature of, 170. 



Skate, structure of egg of, 165. 



Soils of Scioto valley, Ohio, 192. 



Solaster papposa, 66". 



Spermatic particles in Crustacea, de- 

 velopment of, 258. 



Sphoerfedra, 143. 



Spiders, sexual organs of males, 106. 



Spider, palpus of, 120. 



Spinal cord of bats, structure of, 35. 



Spinalis Gouldii Stimpson, 8, 14. 



Spleen, function of, 343. 



Spodumene, crystal of, 286. 



Star-fish, gutta-percha cast of, 135. 

 . Star-fishes, new genus of, 118. 



Stephanasier gen. Ayres, 118. 



. elegans Ayres, 119. 



Stereodei'ma, gen. Ayres, 46. 



Stigmaria, 152. 



Stigmaria and Sigillaria, 74, 154, 179. 



Storer, H. R. resignation of office of cu- 

 rator of herpetology, 394. 



Stratification, origin of, 108. 



Swallow tree, debris from, 299. 

 Synapta, new species of, 214. ^ 



pelhtcida Ayres, 214. 



tenids " 11. 



Swamps, western, 20. 



Tadpoles, dorsal branch of vagus nerve 

 in, 119. 



Tellina/wmto Gould, 91. 



miniata " 90. 



Teredo dilatata Stimpson, 113. 



Tertiary drift at Lake Superior, 28. 



Teschemacher, J. E. notice of, and re- 

 solutions concerning, 392. 



Testaceous Mollusca of Massachusetts, 

 12. 



Thalassidroma Leachii, egg of, 7. 



Thracia Coidlwiuji Stimpson, 8, 13. 



truncata, 13. 



Thrush, hermit, two varieties of, 167, 

 168. 



Thyonidium elongatum Ayres, 60. 



glabrum Ayres, 69. 



musctdusum, 70. 



Thysanozoon niyrum Girard, 137. 



Tin cones produced by pouring melted 



. tin into water, 168. 



Titanium, cyanuret and nitruret of, 4. 



Toads, development without the tad- 

 pole state, 352. 



Toad-fish, habits of, 195. 



Tourmaline, compressed crv'stals of, 265. 



Tri(/h>psis, gen. Girard, 19. 



Thompsonii, 19. 



Trochiniis, gen. Ayres, 243. 



pallidys Ayres, 243. 



roti ferns Pourt, 244. 



Troglodytes gorilla, 209. 



cast of cranium vo- 

 ted to president, 376. 



Trout, blue back, 262. 



new species of, by C. Girard, 



262. 



Tryonyx ferox, homologies of, 10. 



Turritella acicida Stimpson, 15. 



aveulata " 16. 



Vandellia cirrhosa, 31. 



Vertebra, lumbar, transverse process of, 



126. 

 Vibration of water at Hadley falls, 185. 

 Vultures, sense of smell in, 118. 



Webb, T. H.'s collection of objects of 



natural history, 395. 

 Whale's jaw, spermaceti, deformed, 360. 

 Wisconsin, lead district of, 387. 



Zinc, red oxide of, in Sussex, N. J. 265. 



