160 
eon present; each bounded by a marked ridge; outside of the 
escutcheon a second radiating ridge extends from the beak to the 
lower posterior margin of the valves but without producing a 
notable angulation of the margin. Interior of valves dull white, 
the muscular impressions and pallial line distinct. Length 2.5, 
height 1.2, diam. 0. mm.’’—Dall, Nautilus 25:128. 
Type locality:—off San Diego harbor, Cal., in 16-20 fms. 
Dredged by C. W. Gripp, in whose honor it is named. 
2250 Rochefortia grippi Dall. 
“Shell small, thin, equilateral, ovoid, with a dull brownish 
periostracum, more or less incrusted with iron oxide, and sculp- 
tured only by feeble incremental lines. Beaks inconspicuous, 
hinge as in the genus, bearing 2 very small diverging cardinals 
in one valve with a rather strong resilium between them which 
seems to carry a small lithodesma; opposite valve edentulous; 
pallial line entire; inner margins of the valves simple. Length 
4.5, height 2.5, max. diam. 1.3 mm.’’—Dall, 1. c. 
Type locality and collector same as the last. 
2251 Henderson, Junius: 
Oreohelix colonies in Colorado. Nautilus 25:133 26:9-11. 
2252 Oreohelix hendersoni 
Pilsbry, Nautilus 26:29. Near Longmont, Colorado. 
2253 Sonorella argus 
‘“‘Shell small, depressed, flesh-colored,; with a narrow brown 
band encircling the whorls a little above the periphery. This 
shell approaches very nearly S. Fisheri, Bartsch but differs in color, 
size, and in having a wider umbilicus. Type measures: Maj. lat. 
11.3, min. lat. 9.5, alt. 5.7, aperture: maj. lat. 6, alt. 5.8, umbili- 
cus 2 mm. 2—Edson, Nautilus 26:37. 
Type locality:—Iron cap copper mine, Argus range, Inyo Co., 
Cal. (A. M. Strong). 
2254 Epiph. dupetithouarsi cuestana 
Edson, Nautilus 26:37. Cuesta pass, Santa Lucia Mts., Cal. 
(Hannibal). 
2255 Edson, Henry M.: 
Notes on the validity of Helix ee i eon iopa) oregonen- 
sis Lea. Nautilus 26:49. 
Considers E: mormonum as synonymous. Type locality: — 
Oregon. 
2256 lLymneza auricularia L. 
Henderson, Nautilus 26:84, records this from Colorado 
Springs, Colorado. Introduced. 
2257 #Oreohelix carinifera 
Type locality:—Garrison, Montana. 
2258 MHolospira mesolia 
Type locality:—Sanderson, Texas. 
The last 2 species are described in Nautilus 26:89, by Pilsbry. 
2259 Galba montanensis Baker, Nautilus 26:115. 
Type locality:—near Ward, Montana, 
2260 Berry, S. Stillman: . 
A list of mollusca from the Musselshell valley, Montana. Nau- 
tilus 26:130. Mentions the following (Nos. 2261-2262). 
