348 
349 
350 
351 
352 
353 
354 
355 
356 
357 
358 
359 
OF WEST COAST MOLLUSCA. 
Limnophysa caperata Say. 
“S. F. to Oregon.” astern States. 
Acella 
Spring on Spokan Plain, W. T. 
Physa Grosvenorii Lea. 
Dayton, Nevada. (Wheatley Mus.)—Kansas. 
Physa coniformis 7/yon. 
Humboldt River, Nevada. 
Physa Cooperii 7’ryon. 
Crane Lake Valley, northeast Cal. 
Physa sparsestriata Tryon. 
San Joaquin Valley, Cal. 
Physa diaphana 7’ryon. 
Oakland, Alameda Co., Cal. 
Physa malleata Tryon. 
Goose Lake Valley, N. E. Cal.—Montana. 
Physa Nuttallii Zea. 
Lewis River, Idaho. 
Physa distinguenda 77ryon. 
Marysville to Stockton, Cal. 
Physa politissima 7ryon. 
Sacramento, California. 
Physa parva Lea. 
Little Valley, Nev. (Wheatley Mus.) 
Physa propinqua Z7yon. 
Jordan Creek, southwest Idaho. 
Physa gyrina Say. 
Carson River, Nev.; Utah. astern States. 
Physa ampullacea Cid. 
Lake Osoyoos, lat. 49, Wash. Ter. 
Physa occidentalis 7’ryon. 
Most of Cal. northward; Idaho. 
Physa Gabbii Tryon. 
Mountain Lake, S. I’. Co., to Los Angeles. 
Physa costata Newe. 
Clear Lake, California. 
Physa virginea (id. 
Sacramento River, Cal.; San Francisco ? 
Physa venusta Lea. 
Near Vancouver, Columbia R., W. T. 
Physa humerosa Gid. 
Colorado R., Cal.; Pecos R., Texas. 
Physa virgata Gid. 
S. Pedro to $. Diego; Mojave R. to Gila R. 
19 
