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 iy 2 smooth 

 nuclear and 5 V 2 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 is a 

 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 \ x k 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, 1. 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 r 

 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.) 



