494 



Passercula savanna, 374. 



Passerella iliaca, 377. 



Patten, William, award of second Wal- 

 ker Prize for 1883 to, 363. 



Pentamerocerrtii, 278. 



Pericyclus, 330. 



Perisoreus canadensis, 380. 



Petrochelidon lunifrons, 372. 



Phacoceras, 292. 



Phalacrocorax carbo, 393. 



dilophus, 394. 



Phaleropus hyperboreus. 384. 



Pharcicei-as, 336. 



Philohela minor, 386. 



Pkloioceras, 286. 



Phthnnocoiis occUentalis, 59. 



Picoides americanus, 381. 

 arctic us, 381. 



Picus pubescens, 380. 



Pieris, notes on the genus, 134. 



Pieris Beckeri, 139. 

 menapia, 134. 

 occi lentalis, 141. 



Piloceras, 266. 



Pinnacites, 311. 



Pisonia nculeatn, 361. 



Platyclymenia, 314. 



Plectoc'eras, 268. 



Plectrocncmia, larval case of, 69. 



Pleuronautilus, 2S7. 



Polyxenu*, hairs and skin of, 66. 



Popart' >ceras, 337. 



Prinoceras. 328. 



Progne subis, 372. 



Prolecanite«,335. 



Pronorites, 337. 



Pselioceras, 299. 



Protosyngnatha, 63. 



Pteronautilus, 290. 



Ptyxsoceras, 282. 



Puffiausful2inosus,405. 

 major, 404. 



Putnam, F. W. On earthworks of the 

 Little Miami Valley, 358; emblemat- 

 ic mounds in Wisconsin and Ohio, 

 432. 



Pyrus malus, 360. 



Querquedula discors, 389. 

 Quercus georgiaua, 362. 

 ilicifolia, 362. 



Rana sylvatica, development of, 85. 



Regulus calendula, 36y. 



Rhainnus lanceolata, 360. 



Rhainphorhvnchu-, gift of cast of, 150. 



Rhode Island, geology of, 179. 



Rhododendron californicum, 361. 



Rhus toxicodendron, 360. 



Rissa tridactyla, 398. 



fiizoceras, 276. 



Rogers, Wm. B. Death of, 71, 95. 



Rutoceras, 285. 



Sactoceras. 273. 

 Sageceras, 334. 

 Salix alba, 362. 



Salix cordata, 363. 

 lucida, 362. 



Sambucus canadensis, 361. 



Sandbergeoceras, 333. 



Sandstone, atmospheric action on, 201. 



Sandwich Islands, lava of, 490. 



Sannionites, 266. 



Saw-fish, 179. 



Schidoceras, 336. 



Scolopendrella, anatomy of, 64. 



Scuddek, S. H. Older fossil insects 

 west of the Mississippi, 58; on Scolo- 

 pendrella and Polyxenus, 64; fossil- 

 iferous beds at Fairplay, Col., 149. 



Sellaclymenia, 314. 



Septameroceras, 278. 



Sequoia, ancient stump of, at Florissant, 

 Col., 149. 



Setophaga ruticilla, 372. 



Shahples, S. P. Turks Island and the 

 guano caves of the Caicos, 242 ; spe- 

 cific gravity, ash and description of 

 the wood of some exotic trees, 359. 



Siurus auricapillus, c7l. 



Solanum verbascifolium, 362. 



Solenoceras, 286. 



Somateriamollissima dresseri, 390. 

 spectabilis, 390. 



Specific gravity of certain woods, 359. 



Spizella socialis, 376. 



Sponia macranthea, 362. 



Sporadoceras, 321. 



Sphyradoceras, 298. 



Spyroceras, 276. 



Staphylea trifolia, 359. 



Stercorarius Darisiticus, 395. 



Sterna hirundo, 401. 

 macroura, 402. 



Stillingia sebifera, 362. 



Streptocerae, 281. 



Stroboceras, 291. 



Stroj hiceras, 286. 



Subclymenia, 293. 



Sula bassana, 391. 



Suriana maritiina, 361. 



Sutton, Mass., geology of Purgatory 

 chasm in, 434. 



Tachycineta bicolor, 372. 



Tainoceras, 269. 



Temnocheilus, 283. 



Tttrameroceras, 277. 



Thoracoceras, 275. 



Titanocerns, 289. 



Tomocerus, 320. 



Totanus melanoleucus, 386. 



Trap ridges of the Conn. Valley, 116. 



Tremato^eras, 291. 



Trematodiscus, 291. 



Trenton gravels, human tooth from the 



96. 

 Tretoceras, 274. 

 Trirtinoceras, 336. 

 Triboloceras, 294. 

 Trigonoceras, 291. 

 T rimer ocer as 278. 

 Tringa minutilla, 386. 



