320 



Solen fjraciUs, Gould, 20. 



strict us, Gould, 2r». 



Solonhofeu, I'.avaria, Primordial fos- 

 sils, with a lon<,' tall, found at, 288. 



Solidula Ri(1<lpUi\ Shumard, 194. 



Somateria mollissima, ()/. 



Souora, Antimouial Galena with silver 

 from, 109 5 specimens of ores from, 

 109. 



Spirifer Mrtus, White and Whitfield, 

 293. 



St. Albans group, 246, 251. 



Star-fishes, taken from a great depth, 

 00, 104 ; colors of, 284 ; new genera 

 and species of, of the family Tycno- 

 podidie, 201. 



Strata, cretaceous, in Texas, Section of, 

 89. 



Streptorhynchus inflatus, White and 

 Whitfield, 29.3. 



Stone, meteoric, from Dhurmsalla, In- 

 dia, Chemical analysis of, 233. 



Sula bassana, 08. 



Superior, Lake, Massive datholite in the 

 mines of, 02 ; analysis of, 03. 



Supernumerary leg, bones of. from a 

 goose, 2.50. 



Surirella duplex, Bailey, 104. 



Symmetry. Lateral, in Brachiopoda, 274. 



Syringidium Americamim, Bailey, 105. 



cucnllatum, L. W. Bailey, 



108. 



Pai-aenfie, L W. Bailey, 108. 



simplex, Bailey, 106. 



Taconic and lower Silurian rocks from 



Vermont and Canada, 239 ; section of, 



241. 

 Tapes vernicosa, Gould, 30. 

 Tape-worm, Immature, Cysticercus, 



found in the muscles and brain of a 



man, 140. 

 Tarantula, Nest of a California, with its 



cover, identical in appearance with 



one from Charleston, S. C, 180. 

 Tectarius luteus, Gould, 14. 

 Tellina ( Arcopagia) cratitia, Gould, 29. 



euglypta. Gould. 28. 



lubrica, Gould, 28. 



(s. g. Arcopagia) saccularia, 



Gould, 29. 

 Tenthredinidae in U. S., Catalogue of 



several genera of, by E. Norton, 150 ; 



description of several of Harris's 



named, by E. Norton, 223. 

 Terpsinoe magna, Bailey, 104. 



minima, Bailey, 105. 



tetragramma, Bailey. 104. 



Texas, Cretaceous fossils from, descrip- 

 tion of, 188 ; cretaceous and carbonif- 

 erous rocks of, 80 ; section of cre- 

 taceous strata in, 89. 



Thalassidroma Leachii, 71. » 

 Thanks to Conway Fire Insurance 



Company, 2M ; to Governor General 



of India, 235. 

 Theora liihrira. Gould, 24. 



iriti<Ia, (;()ul(l,24. 



ohtusd, (jonld, 24. 



Thracia concinna, Gould, 23. 



Thracia cultrata, Gould, 23. 



pusilla, Gould, 23. 



Tigoma, Description of a new species 



of, by Theodore Gill, 42. 

 Tigoma squnmata. Gill, 42. 

 Tornatella Tcxana, Shumard, 194. 

 Trenton limestone, 242, 249. 

 Triceratium ShadboUii {?) Bailey, 165. 

 Trichosoma bicolor, 150. 

 Trilobites, Vertical distribution of in 



the Quebec group of Paleozoic rocks, 



185. 

 Tritons, living, from which the entire 



fore-leg and the hind-leg at the ankle 



joint were removed and reproduced, 



174. 

 Turbo amussitatus, Gould, 22. 



nocturnus, Gould, 22. 



Turrilites helicinns, Shumard. 191. 



splendidus, Shumard, 191. 



C'orsicana, Shumard, 190. 



Turritella Winchelli, Shumard, 190. 



Unios, Rate of increase and other char- 

 acters of. Prof. L. Agassiz on, 100. 



Uruguay, amethystine quartz crystals 

 from, 00. 



Uria grylle, 74. 



lomvia, 75. 



troille, 74. 



ringvia, 74. 



Urinse, 130. 



Utica slate, 242, 249. 



Variations in plumage of Buteoborea- 

 lis and B. Harlani, Dr. H. Bryant on, 

 107. 



Venus imellula, Gould, 30. 



(Mercenaria) Stimpsoni, Gould, 



.30. 



Vermont and Canada, Taconic and low- 

 er Silurian rocks from, 239 ; theoreti- 

 cal section of the upper Taconic and 

 lower Silurian rocks of Vermont, 241. 



Vertig'o nacca, Gould, 280. 



Volutilithes Navarroensis, Shumard., 

 192. 



Whale, hump-backed, barnacle from, 

 218. 



Worms, Twenty-three small (Agamon- 

 ema.'), discharged from a tumor on 

 the upper cyeliii of a girl, 218 ; army, 

 209. 



Xyela infuscata, 224. 



YoLDiA obtusa, Gould, 30. 



Zapiirentis acutus, White and Wliit- 



field,.300. 

 Zarea inflata, Norton, 151. 

 Zincite,"or red oxide of zinc (ruby zinc), 



from Mine Hill, Franklin Co., N. J., 



145. 

 Ziziphinus acutus, Gould, 19. 



infuscafus, Gould, 19. 



ruhidus, (iould, 18. 



urhrnnis, Gould, 19. 



Zungaro, Synonymy of, 49. 



