166 BULLETIN OF THE 



Selenites Vancouverenis, var. tenuis, Hemphill. 



Shell broadly umbilicated, depressed, nearly planulate ; of a dirty greenish brown 

 color; whorls 5, flattened above, more rounded beneath, the last expanding later- 

 ally as it approaches the aperture, and crowded witli fine oblique striae ; suture well 

 impressed ; aperture rounded, slightly flattened above ; peristome simple, hardly 

 reflected below. Height J inch, breadth j'g inch. 



Napa Co , California. 



The small size, nearly planulate form, and tliin, lean body whorl as it emerges 

 from tiie aperture, will serve to distinguish this shell from the other forms of 

 concaous found on the West Coast. 



The above is Mr. Hemphill's description. He refers all these varieties to 

 concavus, but I use the specific name Vancouverensis for all Pacific Region forms. 



Limax Hemphilli. 



Plate III. Fig. 1. 



Length (contracted) 19 mm. Mantle long, 9 mm. End of mantle to end of 

 body 9 mm. Foot wide 2 mm. Median tract of foot gray, lateral tracts brown. 

 Median area of foot rather wider than either lateral area. Mantle free an- 

 teriorly as far as respiratory orifice. Body tapering posteriorly, not carinate. 

 Mantle somewhat granulose, not concentrically striate. Color dark brown, 

 obscurely marbled with gray ; sides anteriorly grayish and paler. 



Limax Hemphilli, W. G Binnet, 3d Suppl. T. M. V., p. 20-5, Plate VIII. Fig. E ; 

 Plate L Fig. 13 ; Plate IL Fig. 3 (1890). 



A species of the Pacific Province, having been found from British Columbia 

 to San Tomas Eiver, Lower California, by Mr. Henry Hemphill, in whose 

 honor it is named. 



The general outward appearance of this species resembles that of campestris, 

 but every specimen examined by me from numennis localities had a peculiarity 

 in its lingual dentition which seems to me of specific value, — the presence of 

 an inner cutting point to the lateral teeth, very much the same as is found in 

 acjrestis. The anatomy of this species is specifically distinct from agrestis in 

 wanting the trifurcate penis sac of the latter, even did its distribution not 

 preclude its being a form of agrestiit. I have ventured therefore on giving it a 

 specific name. 



The penis sac is large, long, gradually tapering to the apex ; the genital 

 bladder is globular, on a short, stout duct. 



I figure on the plate a variety from San Tomas River, Lower California, 

 called pictus by Mr. Cockerell. Its body is pale, reticulated with gray spots ; 

 mantle with black or gray spots. Resembling L. Berendti, Strebel, from 

 Guatemala. 



For lingual dentition, etc., see Third Supplement. 



