18 GEOGRAPHICAL CATALOGUE 



326 Pupilla Rowellii Newc. 

 Near Oakland, Alameda Co- 



327 Pedipes unisulcata Cp. 

 Sun Pedro, Cal. ; on beach. 



328 Pedipes lirata W. G. Binn. 



Cape St. Lucas, Lower Cal. San Diego ? 



329 Melampus olivaceus Cpr. 

 Salinas River, Cal., to Mazatlan. 



330 Limnasa stagnalis Linn. 



Ruby Valley, Utah, north circumboreal. 



331 Limnsea lepida Gld. 



" Lake Vancouver," Wash. Ter. ; Oregon. 



332 Limnophysa Rowellii Tryon. 

 Near San Francisco. 



333 Limnophysa palustris Mull. 

 Near San Francisco circumboreal. 



334 Limnophysa proxima Lea. 

 Alameda County, Cal., to Oregon. 



335 Limnophysa Gabbii Tryon. 

 Clear Lake, California. 



336 Limnophysa Adelinae Tryon. 

 Near San Francisco, California. 



337 Limnophysa Traskii Tryon. 

 Mountain Lake, San Francisco Co., Cal. 



338 Limnophysa umbrosa Say. 



Near San Francisco, Cal. ; Eastern States. 



339 Limnophysa bulimoides Lea. 

 San Francisco, north and east ; S. Diego 1 



340 Limnophysa solida Lea. 

 Willamette River, Oregon. 



341 Limnophysa ferruginea Hold. 

 "Oregon." (=humilis Say. 1) 



342 Limnophysa humilis Say. 

 Alameda County, Cal. ; Eastern States. 



343 Limnophysa Sumassi Baird. 

 Oregon to British Columbia. 



344 Limnophysa Binneyi Tryon. 

 " Hell Gate River," Montana. 



346 Limnophysa Nuttalliana Lea. 

 San Francisco to Oregon. 



346 Limnophysa Tryonii Lea. 

 Alameda County, California. 



347 Limnophysa obrussa Say. 



" Oakland," Cal. ; Eastern States. 



