108 



irregular on the body-whorl, crossed by five revolving lines that 

 become fainter on the last whorl, suture well impressed; aperture 

 rounded, broader than high, greatly indented above; lip simple, 

 very little reflected below at its junction with the columella, very 

 sinuous above, its terminations joined by a very thin callus. 

 Height 3-8ths inch, breadth 1 inch." — Hemphill. 

 Type locality: — Astoria, Oregon. 



o 



1501 Hemphill Henry: 



New forms of western Limniades. Nautilus 4:25-27. 

 Describes numbers 1502-1504. 



1502 Limnaea (Leptolimnea) Pilsbryi Hemphill. 



"Shell elongated, narrow, somewhat solid, smooth, of a light 

 horn-color; consisting of about 6 roundly-shouldered whorls, the 

 last flattened on its sides and occupying a little more than half the 

 length of the shell; lines of growth very delicate, suture deep; 

 aperture oval, longer than wide, outer lip acute; inner lip subre- 

 flexed. Length 3-8ths, breadth l-8th of an inch." — Hemphill. 



Type locality:— Fish Spring, Nevada. 



1503 Limnaea stagnalis occidentalis 



"Shell large, globose, very thin and fragile; of a light horn- 

 color; whorls 5, the last rapidly increasing in size and constitut- 

 ing about % the entire length of the shell and generally covered 

 with revolving malleations separated by obtuse, irregular lines 

 more or less conspicuous; lines of growth somewhat irregular and 

 conspicuous; spire short, sharp and acute, consisting of 3 

 obliquely twisted whorls and the nucleus; suture well impressed; 

 aperture globosely oval, longer than wide; outer lip thin, sharp, 

 acute, subreflexed near its junction with the columella; inner lip 

 sinuous and well defined, columellar strongly twisted. Length 

 of the largest specimen l%ths inch, breadth 1 inch." — Hemphill. 



Type locality: — Lake Whatcom, Whatcom Co., Wash. 



1504 Physa ampullacea colnmbiana 



"Shell globose or moderately elongated, shining, solid; of a 

 dark horn, or chestnut color; whorls 4, the last occupying about 

 % entire length of the shell; suture well defined and generally 

 marked by a fine yellowish line; spire short, obtuse; aperture long 

 and moderately wide; outer lip simple, thickened internally with 

 a dark chestnut deposit that shows on the outside as a yellowish 

 band; columella lip somewhat sinuous, and well folded on the 

 body whorl. Length of an elongated specimen 5-8ths, breadth 

 5-16ths of an inch. Length of a globose specimen V 2 , breadth 

 5-16ths of an inch." — Hemphill. 



Type locality — Columbia river, Astoria, Oregon. 



Tryon considered this a variety of Physella globosa Hald. ac- 

 cording to Hemphill, who considers it instead as a miniature form 

 of P. ampullacea, which he collected in the Owens river valley 

 and on the upper Colombia. 



1505 Helix (Arionta) carpenterii Newcomb 



Roundly conical; apex obtuse; whorls 5%, convex, strongly 

 striated, with numerous fine spiral lines; suture well impressed; 

 aperture circular, margins approaching; lip a little expanded; 

 umbilicus open. Brownish, with an obscure dark band. Diam. 

 23, height 16.5 mm. 



Tulare Valley, Cal. (type locality?). 



