176 
2573 + Vitrea lucida Drap. Colo. 
2574 =Micrarionta desertorum 
Pilsbry & Ferriss, Nautilus 21:134 t 11 f 6-10. 
Type locality:—-12 miles south of Parker, Yuma Co., Arizona. 
(W. J. Gilchrist). 
2575 Rissoa (Alvania) Grippiana 
‘Shell small, brownish, solid, cancellate, with 1% smooth 
nuclear and 5% sculptured whorls, nucleus flattish, blunt, remain- 
ing whorls rotund, evenly enlarging; last whorl with 13-14 axial 
ribs crossed by somewhat more slender, equal, equidistant, spiral 
threads not tuberculate at the intersections, with 3 somewhat 
stouter spirals on base; earlier whorls with 2 and then 3 spiral 
threads between sutures; suture indistinct, aperture obovate, 
rounded in front, slightly angular behind, with a much thickened 
lip which in senile specimens is duplex at the margin. There isa 
very minute chink but no umbilicus. Length 3, max. diam. 1.5 
mm.’’—Dall, Nautilus 21:136. 
Type locality:—Todos Santos bay, Baja Cal. (Hemphill) .— 
San Diego, Cal., off entrance (C. W. Gripp).—Catalina Island.— 
San Pedro, Cal. 
2576 Bela Grippi 
‘Shell small, straw-color or pale brown with occasional spiral 
bands of darker brown, or all brown; whorls 6, first 1% white, 
polished, smooth and turgid, subsequent portion of shell having a 
dull surface; earlier whorls with the periphery nearer the ante- 
rior suture, the whorl behind the periphery somewhat flattened 
and compressed, crossed by low obscure riblets, about 12 on the 
4th whorl, which become obsolete later; whorl in front of per- 
iphery shows no axial sculpture; the whole whorl is spirally sculp- 
tured with narrow sharp incised lines, one dividing the space be- 
hind the periphery, and about 5 in front of periphery on penul- 
timate whorl; on last whorl between periphery and siphonal fas- 
ciole about 12 of these lines, tho they probably vary in number 
with the individual, while the incremental lines are moderately 
conspicuous; outer lips thin, simple; pillar lips with a small de- 
posit of white callus; aperture narrow, lunate; canal very short, 
wide, with an inconspicuous fasciole. Length 9, of spire 5, of 
aperture 4, max. diam. 3.5 mm.’’—Dall, l. c. 137. 
Type locality:—off San Diego bay, Cal., in 15 fms. (C. W. 
Gripp). 
2577 + Berry, S. S. 
Molluscan fauna of Monterey bay, Cal. Nautilus 21:17-22, 
34-35, 39-47, 51-52. 
2578 Smith, Maxwell: 
Annotated list of mollusca found in the vicinity of La Jolla,. 
San Diego Co., Cal. Nautilus 21:55-59, 65-67. 
2579 Bailey, Jr., Joshua L. 
Shells of La Jolla, Cal. Nautilus 21:92 (list of species omitted 
from above list that he has collected). 
The above three faunal lists not checked up for this work. 
2580 Pilsbry, H. A.: 
Shells of Grant, Valencia Co., N. M. Nautilus 19-130. 
Among others, are noted numbers 2581-2589. 
2581 Valvata humeralis Say. (See 2679.) 
