20 Lower Californian Shells. [ ZOE 
from H/. carpenteri, and extends from Trinidad, lat. 28° 45’,. on 
west coast, to Mulejé, lat. 26° 52, on east, also ‘‘Guaymas, So- 
nora, Mex.,’’ Gabb. The Mexican form is, however, different, and 
is Tryon’s type, while the peninsula shells are probably all carpen- 
tert. 
24. H. tupicuLata Binney, 1843. Not far south of the bound- 
ary line, Orcutt. North to lat. 37°, in Sierra Nevada. ‘‘ Petaluma, 
California,” S#mpson, (Gould) is an error in identification. 
25. H. (VANCOUVERENSIS Lea, 1839), var. SPORTELLA Gould, 
1846. Near the boundary line, Orcu¢f. Those found near San 
Diego seem to me as near the typical Oregon shell of Lea. A. 
vellicata Forbes ‘‘ Panama,’’ seems externally very similar, and is 
united with it by Binney. Not being confirmed from Panama, it 
forms another proof of the errors in localities due to Kellett and — 
Wood. Mr. Hemphill has lately described the smaller form found 
south to Ensenada as var. /ransfuga. 
26. LIMAX HEMPHILLI W. G.B.,1890. San Diego Mountains 
to San Tomas, lat. 31° 35’, Hemphill (and to lat. 31°? Orcutt). 
This is the species mentioned by me in the Proc. Cal. Acad. Sci., 
2d ser., I, p. 13, 1887, at bottom, as perhaps ZL. agrestis Linn. In 
the “4th Supplement to sth vol. Terr. Moll.,”’ January, 1892, Mr. 
Binney now states that this species is found from British Columbia 
to Lower California, having been confounded, in some cases, with 
L. campestris. An extreme southern form has also been named 
var. pictus by Cockerell. Anadenus cockerilli Hemphill, another 
slug allied to the northern Ariolimax, discovered on the San Diego 
Mountains just north of the boundary, may extend southward. 
27. LIMNOPHYSA HUMILIS Say, 1822. Ensenada, lat. 31° re 
Orcutt. Also found in nearly all the United States (and Europe ?). 
28. PHYSA GABBI Tryon, 1863. Found near middle of west 
coast of peninsula, Bryant, thence north throughout southern 
half of California. By many called a var. of P. heterostropha Say, 
1817. 
29. P. DIAPHANA Tryon, 1865. In brook at San José del Cabo, 
Bryant. Has same range northward. 
P. elata Gould, described as from “ Lower California, Maj. Rich,’’ 
was doubtless from Mazatlan only, as given in Carpenter’ s* Catal. 
The same applies to P. aurantia Carpenter. 
