DALL: MOLLUSCA AND BRACHIOPODA. 487 
Turcicula imperialis, 349. 
macdonaldi, 349. 
miranda, 349. 
washingtoniana, 349. 
Turricula, 245. 
Turris, 255, 256, 257, 261, 262, 263, 264... 
armilda, 262. 
babylonica, 255. 
circinata, 257. 
dolenta, 262. 
dotella, 268. 
Susinella, 261, 262, 263. 
notilla, 263. 
resina, 264. 
Turritella, 255, 327. 
mariana, 327. 
Typhis martyria, 314. 
UBER, 333. 
Utriculus domitus, 242. 
VELAINIA, 334. 
Venericardia velutina, 412. 
Vertagus, 245. 
Vesica, 244. 
Vesicomya, 415, 416, 417, 418, 419. 
angulata, 419. 
donacia, 417. 
gigas, 418. 
lepta, 416, 418. 
ovalis, 417. 
stearnsii, 417. 
venusta, 417. 
Voluta, 297. 
alta, 299. 
ancilla, 297. 
gracilis, 298. 
reticulata, 294. 
Voluta solidula, 256. 
tornatilis, 235. 
undulata, 297. 
vespertilio, 297. 
Volutilithes philippiana, 298. 
Volutopsius amabilis, 305. 
WALDHEIMIA WYVILLEI, 444. 
XYLOPHAGA, 424, 425. 
dorsalis, 424. 
mexicana, 425. 
Xylophagus, 424. 
Xylotomea, 424. 
Xylotrya, 425. 
Youp1A, 379, 380, 381, 382. 
angularis, 379. 
arctica, 379. 
chilenica, 380, 381. 
chilensis, 381. 
dicella, 382. 
granula, 382. 
hyperborea, 379. 
indolens, 381. 
infrequens, 381. 
lanceolata, 378. 
leonilda, 382. 
limatula, 379. 
lucida, 380. 
mantana, 381. 
panamensis, 380. 
scapania, 380. 
solenoides, 380. 
thraciaeformis, 379, 381. 
vincula, 379. 
Yoldiella, 380, 381, 382. 
