Index. 551 
Petalos i i 
E n Tbost Gould, 389. Polypterus, new species of, from Africa, 
Porcellana cena 
———— cola, Simpson, 480. 
Porcellio gem nop se 
Portulaca atte i, i. 
riparia. go. ———— lanceola a 
Pholas or ovoidea, Gould, 388. ————- Bernben g^ , pe 
Es — — —— pilosa, de 
Ph Fe Atlntieus Hentz, 284. — —— —— retusa, Gray, 154. 
oradendron, Prime, Temple. <i species of Pisid- 
| = 2 “Caivorncum, sas ium found in the United States, 348. 
— flavescens, = Procellaria Bulwerii, Description of its 
juniperinum, d Z Egg, 309. 
— tomentosum 213. Procellaria obscura, Egg of, 310. 
Bared pare pea aa 191. 
runus minutiflora, 
ivulari 
Verom i Erico: Le Conte, 81. 
81. 
Pselaphidæ oft the "United States, Descrip- 
tions of, 65; Index to, 109; Table of 
, 379 corresponding wc ud species of 
Pini pus roseus, 232. Europe and the United St 67 
mr faba, 470. Psettichthys sordidus, G 
aria calamitarum, x x, 431. Pseudograpsus nudus 
ES oides, 431. ——————— regonensis 468. 
481. Psoralea voe item 
s res — ——— cyphocalyx, Gray, 172. 
Pisidium ea — ——— floribunda, 
Tum of North Ansett ——— — hypogszea, var. seaposs, 173. 
Pi Sof, 348, 367. Puffinus major, Egg of, 3 
um , 859. Pugettia am 
amsii, Prime, 352 ic 
Purp ta panan, Gould, 406. 
rime, 364. Pritil nigra, 317. 
356. : 
Randallia, nov. gen. Stimpson, 471. 
ONPI equale, 367. — — —— ornata, 471. 
B onem, Prime, n: Ranunculus repens, var. macranthus, 
Vinc 41. 
s c; Rare Shells from Micon er 
i , 960. venos esq'x 
CU notatum, Prime, 365. Hhacoeheile meg 41. 
: 359. Rhexius, nov. gen. Le Conte, 102. 
5. 888. Pasch 8, 103 i 
, Prime, 357. Rhinolithodes Wosnessenskii, 476. » 
Pium, 358. ioris Mie eire Girard, 544. 
rentricon Prime, 351. Rhus copallina var. leucantha and 
EN oe 355. —— lanceolata, 158. 
* . 864. —— toxicoden 5 
s 
shes, oe osia Texana, 171. 
rostrata, 2 EB Observations on Fossil 
ch coenam "Gira rd, 5 vlants s of Pennsylvania C Coalfields, 409. 
hanes nivalis, a habits of, Rosa foliolosa, 
Rudbeckia biclor, a 
ale igus Girard, 542. ^ Rutosma Texan na, 1 
nichthys i inequiobus, 541. Salar iridea, Girard, 541. 
hysperma, 1 Salmo fontinalis, 26 
Lindbeimeri( Gray, 150. — — fon — habits of, 49. 
ia uvedali 3 RE Md tus, H. R. Storer, 264. 
; oe 
onic ra ofl —— salar, 
