318 



Nova Scotia marine shells, List of, 61. 

 Nuciila helkditruita, Shumard, 202. 



(Acila) rnsif/niii, Gould, 3(5. 



lowensis, White and Whitfield, 



298. 



parmdn, Gould, 30. 



Nuculina^^J'ciiosa, Gould, 31. 



Officers for 1861-2, 176. 



Olyra, Synonymy of, 51. 



Oneida County, N. Y., Ravag'es of 

 Aphis on wheat, barley and oats in, 

 209. 



Ophiocoraa im^nlaria, Lyman, 80. 



moliiris, Lyman, 79. 



Sannio, Lyman, 81. 



tartarea, Lyman, 78. 



Ophiolepis Garretti, Lyman, 77. 



Ophioplocus, Lyman, 75. 



tessellatus, Lyman, 76. 



Opliiothrix CJienej/i, Lyman, 84. 



demifisn, Lyman, 82. 



propinqud^ Lyman, 83. 



vircjata., Lyman, 82. 



Ophiurid£E, New, Theodore Lyman on, 

 75. 



Ores, Specimens of, from Sierra Neva- 

 da, Pike's Peak, and Sonora, 169. 



Org-anisms found in the mud from the 

 bottom of Mystic Pond, near Boston, 

 K. C. Greenleaf and Charles Stodder 

 on, 119. 



Orthis suhelUptica, White and Whit- 

 field, 292. 



Orthouota rentricosa., White and Whit- 

 field, 297. 



Ostodes, Gould, 283. 



Ostrea Lyoni, Shumard, 200. 



Oivenana, Shumard, 200, 



planmmfa, Shumard, 201. 



rivularis, Gould, .39. 



Ovarian sheath of Holconoti, 133. 



Panop.ea frnr/lHs, Gould, 25. 



f/enernsa, Gould, 25. 



snbpiicdta, Shumard, 199. 



Para and Amazon River, List of Diato- 

 macea; from. 11(5 ; new species of, 162. 



Paradoxides Harlani, supposed identity 

 with Paradoxides spinosus, Albert 

 Ordway on, 1 ; identical in Braintree 

 and Newfoundland, 58. 



Partially double pig, 103. 



Pearl, Cocoanut, 59, 173. 



Pecten hetu.<!, Gould, 39. 



Pentamerus Jentlcularis, White and 

 Whitfield, 295. 



Periophthalmus, Habits of, 60. 



Petricola. 106. 



Phalacrocorax carbo, 70. 



dilophus, 71. 



Phancrodon, 128 ; 1*. furcatus, 128. 



Phillips, Jonathan, Bequest of, 173, 175. 



Pholadomya TJiicccif/ni, Shumard, 199. 



Pholis, Respiration of, 1C3. 



Plioto^raphic delineation of micro- 

 scopic objects, 105 ; of diatoms, 2.55. 



Pieris, Notice of some North American 

 species of, by Sam'l II. Scud- 

 der, 178. 



fri(/ula, Scuddcr, 181. 



Pieris, marfjinaUs, Scudder, 183. 



pallida^ Scudder, 183. 



protodice, 180. 



Tan, Scudder, 183. 



venom, Scudder, 182. 



Pig, Partially double, Prof. J. Wyman 

 on, 103. 



Pike's Peak, argentiferous galena from 

 the vicinity of, 169 ; specimens of ores 

 from, 169. 



Pimelodina;, Description of new spe- 

 cies of, by Theodore Gill, 42 ; synopsis 

 of the genera of the sub-fiimily of, by 

 Theodore (Jill, 46. 



Piinelodux{\.nc.), Gill, Synonymy of, 47. 



Pinnularia dilaUitn, Bailey, 1()4. 



Placunanomia unihonata, Gould, 39. 



Plants from the Arctic regions, 288. 



Platyceras birfdre, White and Whit- 

 field, 302. 



jJaralium, White and \f bit- 

 field, 302. 



PlautidfE, 1.34. 



Pleurobrachia rhododactyla, 225. 



Pleurotoma Texana, Shumard, 197. 



Pleurotomaria Austinensis, Shumard, 



Mississippiensis, Shu- 

 mard, 302. 

 Plicatula simplex, Gould, 39. 

 Plumage, Variations of, in Buteo borea- 



lis Auct., and Buteo Harlani, of 



Aud.(.?), 107. 

 Polydonta (Infundibulum) gloriosnm, 

 Gould, 19. 



lacertinuni 



Gould, 19. 

 Polymyxus, Bailey, 165. 

 coronatus, L. W. Bailey, 



165. 

 Porcellia crassinoda, White and Whit- 

 field, 303. 

 Potamocottus Carolwce, Gill, 41. 



jmnctulntuft,^ Gill, 40. 



Potsdam Sandstone, 244, 25 1. 



Preston, Jonathan, Plan of the new 



building designed by, 257. 

 Primitive rocks from the Arctic regions, 



288. 

 Primordial fauna in Canada, 97; fossils, 



localities in U. S. where found ; in 



lithographic stone at Solenhofcn, 



Bavaria, 288 ; discussion on the term, 



59. 

 Psammobia spntnlafa, Gould, 27. 



tenella, Gould, 27. 



Pseudomorphic crystal of native cop- 



\>QY from Lake Superior, 171. 

 Pseudopimelodus, Synonymy of, 48. 

 Ptychoceras Texanus, Shumard, 190. 



Puffinus (.?) 72. 



Pjicnopodia, Stimpson, 261. 



— helianthoides, Stimpson, 



261. 

 Pycnopodidas, New genera and species 



of Starfishes of the family, William 



Stimpson on, 261. 



Quartz crystals. Amethystine, from 



Salto, Uruguay, 60. 

 Quebec group of Paleozoic rocks, Vcr- 



