414 



Ophiolepis robusta Ayres, 134. 



temiis '" 133. 



Ophioderma oUvnceum Ayres, 134. 



Ophiothrix hispida Ayre.«, 249. 



Ophisaurus ventralis, cause of brittle- 

 iiess of, 223. 



OpliiuridjE, new species of, 133, 248. 



Opium, larva in, 120. 



Oregon and Nebra>«ka, communication 

 concerning geological survey of, 322. 



Oregon and Nebraska, resolutions con- 

 cerning geological survey of, 302. 



Oruithichnites, purchase of, 367. 



exhibited, 376. 



Osmerus viridescens from fresh water, 

 189. 



Paia^oniscus Alberti Jackson, 138. 



Brainerdi, 375. 



Broini'd Jackson, 139. 



Caivmii " 139. 



Genus, 140. 



• three new species, Jackson, 



Pisidinm, monograph on, 239. 



new species of, 161. 



comjiressum Prime, 164. 



141. 

 Palaioniscus, analysis of body and scales 



of, 239. 

 Palapteryx, 298. 



"— ingens, 342. 



major Kneeland, 236. 



Parallelism of quaternary deposits of 



Europe and America, id. 

 Parasite from intestinal canal of ants, 



331. 



Patrons, enrolled. 

 Cross, Henry, 239. 



Pedicillarite, 168. 

 Pelonaia artniftra, 49. 

 Pentacta cakigern Stimpson, 67. 

 Pentamera gen. Ayres, 207. 



jnikherrima Ayres, 207. 



Fera, gen. Stimpson, 232. 



pdlucida Stimpson, 232. 



Petricola bulbosa Gould, 88. 

 Philine formosa, 17. 



sinuata, 17. 



Pholas ovoidea Gould, 87. 



Phosphate of lime, from Hurdstown, 



N. J. crystal of, analysis, 40. 

 Phosphate of lime, from New Jersey, 



264. 

 Phosphorus, an element in the globe, 



260. 

 Phosphorus from New Jersey, phosphate 



of lime, 56. 

 Pine barrens of South Carolina, ani- 

 mals of, 115. 

 Pine barrens of South Carolina, birds 



of, 116. 

 Pine barrens of South Carolina, insects 



of, 116. 



Pitch stone from Isle Royale, analysis 



of, 39. 

 Planaria, new species of, from Florida, 



137. 

 Planaria, new genera and species of, 



210. 

 Plants, American, suites for sale, 335. 

 from Europe, naturalized in 



America, 329. 

 Platina, California, 61. 

 Pleui-otoma cerimun Stimpson, 115. 



violacea, 17. 



Plication, theory of the earth's strata, 



33. 

 Polar currents, 99. 

 Pollock, 289. 



Polyp, new species of. l!*o. 

 Pomotis vulgaris, ne^t ol', 241. 

 Foseulon gen. Girard. 186. 



Cvkl " ' 186. 



Post-Pliocene, fussils of, at Chelsea, 



Mass. 9. 

 Procellaria Bulwerii, P. obscura, eggs 



of, 7. 

 Progressive development of species, 81. 

 Psolus granulntus Ayres, 63. 



kevigaius " 25. 



phantapus, 31, 73. 



Ptilota elegans, 242. 

 PufBnus major, eggs of, 7. 

 Pygorhyncus Gouldii, 3. 



Quartz, crystallized, containing Ku- 

 tile, 23. 



Uanunculacea?, 207. 



Rattlesnake, 241. 



action of poison of, 322. 



notes on, 311. 



Redpoll, Lesser, 42. 



Reef at Pernambuco, structure of, and 

 theory of formation, 390. 



Renal organs in vertebrata, 263. 



Reproduction of lost parts in reptiles, 

 309. 



Reptiles, North American, range of, 137. 



of Georgia, 146. 



Resolution of greeting to Dr. J. C. War- 

 ren, 105. 



Rhinoceros honi, structure of, 175. 



Rhiuosia pametella Harris, 347. 



