137 
1967 Pyrgulopsis Nevadensis Stearns. 
Pyramid Lake, Nevada. 
1968 Genus Paludestrina Ofb. 
Includes Bythinella Mog. Tand and of authors generally. 
1969 Paludestrina longinqua 
See No. 215, 216 and 628 for description, localities, etc. 
Synonymy: Bythinella intermedia Tryon. 
1970 Paludestrina imitator Pilsbry. 
Sonoma, Alameda and Santa Cruz counties, Cal. 
1971 Paludestrina Stearnsiana 
Marin, Alameda, Tuolumne, Santa Clara and Santa Cruz coun- 
ties, Cal. 
1973 Paludestrina Hemphilli 
Near Kentucky Ferry, Snake river, Wash. (Hemphill). 
1974 Paludestrina protea 
Colorado Desert, and Death Valley, Cal. Durango and Michoa- 
can, Mexico. 
1975 Tryonia clathrata Stimpson 
Colorado Desert, Pahranagat valley, Nevada (Merriam). 
1976 Fluminicola Columbiana Hemphill. 
Columbia river near Wallula, Wash.—Idaho. 
1977 Fluminicola seminalis Hinds. 
Sacramento river, Cal. (Hinds)—-Klamath river, Oregon 
(Gabb). 
1978 Variety Dalli Call. 
Brook flowing into north end of Pyramid Lake, Nevada (Call). 
Synonyms:—Amnicola Dalli Call.—A: turbiniformis Tryon.— 
Lithoglyphus Cumingii Fffd. (fide Pilsbry).- 
1979—Fluminicola erythropoma Pilsbry. 
Nye Co., Nevada. 
Synonymy:—F: fusca var. minor Stearns. 
1980 Pomatiopsis Binneyi Tryon. 
Bolinas, Cal. 
1981 Pomatiopsis Californica Pils. 
San Francisco and Oakland, Cal. 
See descriptions of above species in Nautilus 12:124-127. 
1982 Drillia Emprosia 
“Shell solid, with a high acute spire and polished surface; 
color yellowish with a burnt sienna brown tint on the later whorls, 
a paler peripheral band develops white patches where it crosses 
the ribs; transverse sculpture of (about 11) slightly oblique some- 
what flexuous ribs, obsolete below the periphery and upon the 
anal fasciole, sharpest on the earlier whorls; spiral sculpture of 
coarse, sometimes nearly obsolete threads, most obvious below the 
periphery; whorls 9, the nucleus lost in the specimen; aperture 
short, wide, with a deep wide notch leaving a wide fasciole, a 
callous lump above the notch on the body, and a rather strong 
whitish callus, externally brown-edged, on the pillar; siphonal 
notch wide with a marked fasciole, the canal slightly recurved. 
Lon. of shell 31, of last whorl 16; of aperture 10, max. diam. 10 
mm.’’—Dall, Nautilus 12:127. 
| Se locality: Off San Pedro, Cal. (Mr. and Mrs. T. S. Old- 
royd). 
1983 Bifidaria quadridentata Sterki. 
Nautilus 12:127. Capitan Mts., N. M. (Ashmun). 
1984 Bif. hordeacella parvidens 
' §terki, 1. c.:—Jerome, Arizona (Ashmun). 
