423 



Porzana jamaicensis, 163. 



Posoqueria lougiflora, fertilization of, 



354. 

 Progomphus, American species of, 48, 



52. 

 Prunus serotina,401. 

 Psalidophora, 237. 

 Psalis, 237, 327. 

 Psaltriparus plumbeus, 154. 

 Pseudomorphism, 108, 200. 

 Putxam, F. W". Habits of the Blind 



Crawfish, ami the Reproduction of 



Lost Tarts, 16. 

 Pygidicrana, 298, 327. 

 Pyragra, 298, 329. 



Quiscalus purpureas, 172. 



Rainfall, causes and geological value of 

 variations in, 176. 



Recurvi rostra americana, 161, 174. 



Regulus calendula, 154. 



Rhodora, tendency to separation of 

 sexes in, 401. 



Richmond, V'a., infusorial deposit of, 

 206. 



Rock Movements, some phenomena of, 

 272. 



Rogers, Prof. War. B. On the New- 

 port Conglomerates, 97 ; Gravel and 

 Cobblestone deposits of Virginia, 101. 



Rubus canadensis, 400. 

 villosus, 400. 



Rusticus Seudderii, 188. 



Salpa, embryo] gy of, 193. 



Salpinctes obsoletus, 154. 



Sassafras, measurements of a remark- 

 able tree in It. I., 216. 



Saxifrage, position of stamens in Gold- 

 en, 355. 



Sayoruis fuscus, 160. 

 say us, 173. 



Schinia media, 123. 



Scolecocampa liburna, 415. 



Scolecophagus cyanocephalns, 159. 



Scuddeu, ft. H. Fossil Insects of Cape 

 Breton, 113; on Tost Miocene Fossils 

 from Sankoty Head, Nantucket, 182; 

 on Butterflies from C. Breton Island, 

 188; Fossil Myriapods from Nova 

 Scotia, 187; geographical distribution 

 of Vanessa cardui and Atalanta, 201 ; 

 century of Orthoptera, V, 251; VI, 

 257; new species of Labia, 265; Or- 

 thoptera from the Island of Guada- 

 lupe, 26S; Notes on Forficulariae, 

 ■with List of Species, 287 : on the Car- 

 boniferous Insects of Europe and 

 America, 3oS. 



Segetia merm, 120. 



]>rorima, 240. 



Shat.ek. 1 rot'. N. S. Motion of Con- 

 tinental Glaciers, 126; on the Cause 

 and Geolog cal Value of Variations 

 in Rainfall, 176. 



Sheep. <>i' i of domestic, 356. 



Sialia arctica, 154, 170. 

 luexicana, 154. 



Sicyases Petcrsii, 203. 

 Sitta aculeata, 154, 170. 

 carolinensis, 170. 

 pyginaea, 154. 

 Snow, whiteness of at different seasons, 



96. 

 Society, reminiscences of the early 



days of this, 242. 

 South America, fishes and reptiles of 



the western coast, 232. 

 Sparatta, 299, 329. 

 Spatula clypeata, 175. 

 Speotyto cunicul ria, 173. 



hypogaja, 173. 

 Splucria morbosa, 226. 

 Spizella Brewer i, 158. 



monticola, 158. 

 pallida, 171. 

 socialis, 171. 

 Spongopliora, 299, 330. 



for/ex, 2-')9. 

 Staurophlebia, American species of, 40. 

 Stenorhina Degenhardtii, 407. 

 Stephanoceras, genetic relations of, 360. 

 Stephanoceras Bayleanum, 385. 

 Blagdeni, 38*. 

 Braikenndgii, 397. 

 Brocchii, 392. 

 Brongniartii, 394. 

 contractuin, 391. 

 corona turn, 388. 

 Deslo;igchamp.-ii, 387. 

 dimorphum, 396. 

 Gervilii, 393. 

 Herveyi, 391. 

 Huinphriesianum, 385. 

 linguiferum, 398. 

 lnacroceplialuni, 392. 

 microstonium, 395. 

 nodosum, 385. 

 plan ul inn, 389. 

 piatystonium, 395. 

 plicatissiinuni, 387. 

 refractum, 399. 

 Sanzei, 393. 

 subcoronatum, 386. 

 subleve, 390. 

 Sterna Forsteri, 163. 

 Sternopygus carapus, 203. 

 Stoddeu, Cha.kl.ks. Contribution to 

 Microgeology. The Infusorial De- 

 posit of Richmond, Va , 206. 

 Sturnella ludoviciana, 172. 

 negleeta, 158, 172. 

 Syneda graphica, var. media, 125. 

 Syrnium nebulosum, 173. 



sp., 161. 

 Syrphus, North American species, 135. 

 abbreviatus, 144. 

 amalnpis, 148. 

 aniericanus, 145. 

 contumax, 147. 

 diversipes, 149. 

 genieulatus, 150. 

 Fappoi liens, 149. 

 Leseurii, 143. 

 rectus, 1-40. 

 torvuR, 139. 

 unibellataruiu, 151. 



