DALL: MOLLUSCA AND BRACHIOPODA. 
Miomelon, 298. 
Mnestia, 241. 
Modiola, 418. 
capax, 418. 
linea, 364. 
Moera, 420. 
Moerella, 420. 
Mohnia, 257, 274. 
frielei, 274. 
Monoculus telemus, 230. 
Monodonta, 346. 
Mopalia blainvillei, 357. 
Mucronalia, 317, 318. 
Murex, 255, 256, 261, 301, 312, 313, 400. 
anus, 318. 
babylonius, 255. 
centrifuga, 313. 
colus, 301. 
diomedaeus, 313. 
erinaceus, 313. 
gracilis, 261. 
humilis, 313. 
javanus, 256. 
nebula, 259. 
tenuispina, 400. 
textilis, 260. 
Mya, 372, 422. 
pernula, 372. 
Myonera, 434. 
bicarinata, 435. 
garretti, 434. 
paucistriata, 435. 
Mysella, 413. 
Mytilus solen, 362. 
Myurella, 245, 246, 248, 249, 250. 
Nacca, 382. 
Narona, 294. 
Nassa, 306, 309, 319. 
arcularia, 319. 
ephamilla, 309. 
incrassata, 306. 
Natica, 332, 333, 334, 335, 337, 338. 
ampullaria, 333. 
canrena, 332. 
cepacea, 334. 
clausa, 332. 
glaucinoides, 333. 
impervia, 338. 
infundibulum, 334. 
intemerata, 334. 
labellata, 333. 
livida, 333, 
maroccana, 333. 
othello, 332. 
scethra, 333. 
soluta, 335, 337. 
Natica spadicea, 332. 
uber, 334. 
vitellus, 332. 
Naticina, 334. 
Nautilus papyraceus, 228. 
Neaera patagonica, 431. 
Neilo, 383, 386. 
. cumingi, 383. 
Neptunea, 304. 
Nerita mamilla, 333. 
Neverita, 333, 337. 
josephinae, 333. 
Nodipecten, 401. 
Noditerebra, 246, 247, 248. 
483 
Nucula, 367, 368, 369, 370, 371, 372, 374, 
375, 378, 383, 387, 390. 
agujana, 370. 
australis, 383. 
chrysocoma, 370. 
colombiana, 371. 
costellata, 375. 
declivis, 371. 
elenensis, 374. 
excavata, 374. 
excisa, 378. 
exigua, 370. 
gibbosa, 372. 
iphigenia, 369. 
panamina, 368. 
pigafetiae, 369. 
pisum, 370. 
proxima, 387. 
savatieri, 367, 368. 
semiornata, 370. 
sulculata, 390. 
taeniolata, 368. 
tanneri, 367, 368. 
Nuculana, 367. 
Nuculocardia divaricata, 410. 
Nudibranchs, 244. 
OcENEBRA, 313. 
Ocinebra, 313. 
Omphalius, 342. 
Onchorhynchus, food of, 232. 
Odcorys, 321, 322, 323. 
abyssorum, 321. 
aquilarum, 321. 
elevata, 322. 
fischeri, 321. 
pacifica, 822, 323. 
rotunda, 322. 
sulcata, 321. 
watsoni, 321. 
Orbignyia, 230. 
Orthagoriscus mola, 232. 
Orthoyoldia, 380. 
