Zootocyv—Mollusca. 
5 
ZOO od 
*Orthis hybrida, xlviii, 313.f 
" pectinella, xlvii, 366.! 
% striatula, xlvii, 366.f 
- : feeding xlvii, 376.f 
*Orthoceras multilineatum, xlvii,| 
369.f 
* primigenium, xlvii, 357.f 
. trentonense, xlvii, 369. 
*Orthocerata, in Canada, v, 213!; 
vill, 84.f 
, in Indiana, J. T. Plummer, 
xliv, 295. 
, divided into three genera, 
Be anceras: Ormoceras and 
Huronia, xxxvil, 233. 
, structure ae J. Hail, x\vii, 
109. 
*Orthonota curta, xlvili, 306.f 
*Ostrea convexa, new species, ii, 
* 
* 
42. 
a cristagalli, xvil, 284; 
xvili, 250.f | 
edulis, xxxil, 241. 
5 faleata, xvil, 284; xviii, 
250-£ 
% panda, xxiii, 293. 
* plumosa, xxiii, 293. 
es radians, xxiv, 130. 
scabra, xxxii, 247. 
s selliformis, xxiv, 130. 
i torosa, xxiv, 130.f 
urticosa, xxill, 293. 
Oxinoe? glabra, xxxiv, 217. 
Oyster shell deposits of the At- 
lantic coast, of Indian origin, 
xli, 168. 
Paludina heterostropha, 
269.f 
*Pasithea cancellata, xl, 93.f 
* elegans, xl, 93.f 
? minima, xl, 92.f 
nigra, xxvi, 369.f 
sordida, xlii, 110.f 
of Lea, the Acteeon 
trifidus of Totten, xlii, 392. 
Patella amzna, of Say, note on, 
Di Deans ole 
candida, xxxiv, 217. 
tentorium, xxi, 291. 
XXXV,| 
* 
11 
*Pecten anatipes, xxiii, 293.f 
ZooLocy— 
Z9Oo0 
Mollusca. 
*Pecten calvatus, xxiv, 130.f 
we craticulus, xxiii, 293. 
a eboreus, XxXiil, 34], 
maximus, aie 248. 
*____ membranosus, xxiv, 130.f 
S perplanus, xxiii, 293.f 
£ 
quinquecostatus, xvil, 285 ; 
xvili, 250.f 
venustus, xxiii, 293.f 
*Pectunculus aratus, xli, 346. 
- carolinensis, xli, 346. 
cuneus, xxiil, 342. 
quinquerugatus, xli, 846. 
stamineus, xxill, 342. 
trigonella, xxiii, 342. 
* Pentamerus oblongus, xlviii,303. 
Periploma trapezoides, remark 
on, J. P. Couthouy, xxxvi, 384. 
*Perna torta, il, 38. 
*Petricola centenaria, xxill, 341. 
*Pholadomya elongata, xxix, 153.f 
* occidentalis, xxiii, 292.f 
Pholas, xxiil, 292. 
costata, xxiii, 346. 
ovalis, 11, 39. 
Physa ancillaria, xl, 268, 269. 
elongata, xl, 269. 
—— gyrina, xl, 268, 269. 
heterostropha, xl, 268, 269. 
pomilia, xxv, 343. 
Sayii, xxxv, 269.f 
Pinna rotundata, xxxi, 70. 
*Plagiostoma, xvill, 245. 
e gregalis, xxiii, 292.f 
pelagica, xxiii, 293.f 
Seat antrorsus, xxv, 343. 
hirsutus, XXXvill, 196. 
virens, xxxix, 374. 
Pleurotoma bicarinata, xxxiv,218. 
e eancellata, xl, 98.f 
decussata, xxxvi, 390. 
Plenrotomaria, xlvii, 867/, 368f, 
376! 
lenticularis, xlvii, 365.f 
pervetusta, xlviii, 300.f 
*Polythalamia, fossil, from the 
Upper Mississippi, J. W. Bat- 
ley, xli, 400.f 
, Petersburg, Va., J. W 
Bailey, xlv, 313. 
* 
* 
* 
*% 
* 
* 
x 
*% 
% 
