DALL: MOLLUSCA AND BRACHIOPODA. 
Protocardia, 414, 415. 
panamensis, 415. 
Psammacoma, 491. 
Psammotreta, 422. 
Seudamusium, 402, 403, 404, 405. 
Pseudaxinea, 399. 
Pseudotoma, 256, 
Pthonia, 366. 
Ptychatractus, 299. 
californicus, 299. 
ligatus, 300. 
P occidentalis, 300. 
Uncturella, 352, 353. 
asturiana, 353. 
P expansa, 358. 
“Urpura, 306, 377. (See Thais.) 
Yrula anomala, 300. 
RApurA PYGMARA, 408. 
Rhabdus, 359. 
Rheda, 230, 
Rictaxis, 936, 
Mmula expansa, 353. 
ochfortia, 413, 
mabillei, 413. 
R rochebrunet, 414. 
Ouaultia, 258. 
Yderia, 431. 
SABATIA, 240. 
abatina, 240, 941. 
Mguinolaria rosea, 379. 
AXicava, 494, 
antaretica, 494, 
arctica, 424, 
chilensis, 424, 
frigida, 494. 
lebruni, 494. 
mollis, 424, 
rugosa, 424. 
Scala, 315, 317. 
Serminiana, 315. 
mitchelli, 317. 
Scaphander, 238, 239, 240, 241. 
cylindrellus, 239, 940. 
decapitatus, 240. 
gracilis, 939. 
interruptus, 239. 
'ignarins, 941. 
Pianeticus, 241. 
Scapharca, 397. : 
Caphella, 297, 298. 
benthalis, 298 
Seguenzia, 325, 326. 
Monocingulata, 326. 
occidentalis, 325, 
.  Stephanica, 325. 
Sigaretopsis, 334, 
Silenia sarsii, 430. 
Silia, 319. 
Silicula, 397, 392. 
fragilis, 391. 
Solariella, 349, 351, 352. 
ceratophora, 350. 
equatorialis, 351. 
galapagana, 350. 
nuda, 349. 
Solarium, 327. 
Solemya, 361, 363, 364, 365, 366. 
agassizii, 364, 365, 366. 
australis, 361, 362, 369, 364. 
borealis, 363, 364. 
grandis, 364. 
japonica, 364. 
johnsoni, 364, 365. 
485 
macrodactyla, 363, 364, 365, 360. 
mediterranea, 362, 363, 364. 
occidentalis, 364. 
panamensis, 363, 364, 366. 
parkinsoni, 362, 363, 364. 
patagonica, 363, 364. 
protexta, 364. 
pusilla, 364. 
radiata, 360. 
solen, 362, 363, 364. 
valvulus, 364, 366, 
velum, 363, 364. 
ventricosa, 364. 
Solenella, 383. 
norrisii, 383. 
Solenosteira, 300. 
anomala, 300. 
elegans, 300. 
Solidula, 236. 
Spaniodon, 412. 
Speo bifasciatus, 236. 
Sphenia subequalis, 422, 
Spineoterebra, 246, 247, 248, 250. 
Spinula, 377. 
Steiraxis, 257, 273. 
aulaca, 273. 
Sthenorhytis stearnsii, 317. 
Stigmaulax, 332. 
Stilifer, 317, 318. 
bathymetrae, 318. 
thomasiae, 318. 
Strioterebrum, 246, 248, 250, 251, 252, 253. 
Strombina, 310. 
edentula, 310. 
turrita, 310. 
Subula, 245, 249. 
Surcula, 256, 261, 262, 263, 264, 272. 
Surculina, 260, 291, 292. 
blanda, 261. 
Surgula, 256. 
