tain valleys. Bike the other Galbas or smaller Lymnaeas it 

 is uncommoD in lakes and streams; the proper situation to 

 look for it is with Succinea in marshy places, particularly on 

 moist tangles of algae. 



West Indies and Central America northward to Gulf 

 States. Colorado, and northern California. Along its north- 

 ern limits west of the .Mississippi it intergrades with typical 

 L. solida. 



Los Angeles System: Near Santa Barbara, foothills of 

 Santa Ynez Mountains (II. Hemphill) tide Keep; (1. B. 

 Hardy); mouth of Canada Larga, Ventura River Valley (H. 

 Hannibal); Santa Clara River, Montalvo Ml. Hannibal); three 

 reservoirs, Bardsdale, Santa Clara River Valley (II. Hannibal) 

 tide Hannibal: Santa Clara River, Pilmore (H. Hannibal). 



Ballona swamp between high-wood and Venice. Los An- 

 geles Coastal plain (H. Hannibal); Los Angeles (H. Hemphill) 

 tide Cooper; Compton Creek between Albida and Lynwood 

 Ml. Hannibal); Bouton sloughs, Bixby (H. Hemphill), (H. 

 Hannibal): Coyote Slough. La Mirada (II. Hannibal). 



Artesian pond near Chino Creek, ten miles south of On- 

 tarid, San Bernardino Valley (J. Henderson) tide Henderson. 



San Antonio Canon, two miles above mouth of gorge, 

 Cucamonga Mountains (R. II. Tremper) fide Berry. 



Near old gold mines. Cuyamaca Mountains (II. Hemphill) 

 tide Cooper; Warner, San Jose del Valle (F. W. Bryant). 



Morena, San Diego Mesa (C. L. Cass); San Diego (.1. S. 

 Newberry) fide Stearns (J. G. Cooper. II. Hemphill) fide 

 Cooper, (C. \V. Gripp) ; Power-house Canon, San Diego (Mrs. 

 C. Stephens); gulch south of city park. San Diego (Mrs. C. 

 Stephens) : fountain. Point Loma (fide Miss M.J. Cook); Rose 

 Canon, Pacific Beach (C. L. Cass); receiving reservoir of San 

 Diego flume, between La .Mesa and Lakeside MI. Hannibal); 

 near International boundary, south of San Diego (II. Hemp- 

 hill). 



Near Alamo. Baja California (C. R. Orcutt) fide Orcutt; 

 Sanzal, Lat. Ml 53' (C. R. Oreutl I tide Orcutt. 



Arizona System: Cienaga between Chiricahua and Stein 

 Mountain Ranges, Arizona II. A. Pilsbry) fide Pilsbry and 

 Ferriss; Salt River, Tempe (E. II. Ashmun) ; near Holbrook 

 B. II. Ashmun I. 



Lymnaea truncatula (Midler . 



Buccinum truncatulum Midler. Verm. Terr, et Flu v.. II. 

 1S74. 130; Lymneus humilis Say. .lour. Phila. Acad. Nat. Sci., 

 II, 1822, 387; Lymnaeus modicellus Say. Jour. Phila. Acad. Nat. 

 Sci. V. 1825, 122: Lymnaea parva Lea. Proc. Am. Phil. Soc, II. 

 1841, 33; -Limnaea humilis Binney, B. & F. \V. Shells N. Am.. 

 II, 1865, 63, fig. 99-109; Limnaea'"desidiosa Say" Ball. Proc. 

 F. s. Nat. Mus. XIX. 1897, 368. 



A dwarfish Lymnaea frequenl in springs and about streams 

 ami moist places in the mountains, often in greenhouses. The 



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