Palm Canon at upper palm grove, San .Jacinto Mountains 

 (II. Hannibal): Hog Ranch Cienaga, .Mission Canon, San Ber- 

 nardino Mountains ill. Hannibal). 



(Semifossil) Laguna Maquata, Baja California (C. H. 

 Orcutt) fide Stearns; Hot Springs (II. and C. K. Orcutt) lide 

 Stearns. 



» 



Hani on 's Ferry near Fort Yinna. Arizona (C. R. Orcutt) 

 fide Orcutt; Salt River. Tempe (B. II. Ashmun) fide Ashmun; 



irrigating ditches, Phoenix (V. Bailey) tide Stearns; Critten- 

 den (E. II. Ashmun) ; Devil's River ( \V. Loyd) tide Stearns; 

 Seven Wells (E. A. Mearns) fide Da II ; Santa Cruz River. 

 Tucson (E. A. .Mearns) fide Dall; Big Sandy River (Mrs. C. 

 Stephens). 



Cienaga between Chiricanua and Stein Mountain Ranges 

 (II. A. Pilsbry) fide Pilsbry and Ferriss; spring, 6,000 feet, 

 Tanner Canon, Huachuca Mountains (J. II. Ferriss) fide Pils- 

 bry and Ferriss; Cavalry Camp, Tanner Canon (\V. Mann). 



Guadeloupe Canon. New Mexico (E. A. Mearns) tide Dall; 

 S;m Bernardino River (E. A. Mearns) fide Dall. 



FLUMNICOLIDAE. 



Flumnicola sp. indet. 



Flumnicola "nuttalliana Lea" Stearns, Shells Death Val. 

 Exped., 1893, 282; F. "columbiana Pilsbry" Stearns, Proc. U. 

 S. Nat. Mus. XXIV, 1902, 285. 



Nothing further is known of this than contained in these 

 two references. If the locality is authentic the species is prob- 

 ably new since the Flumnieolas are characteristically locallize.d 

 in distribution and both F. nuttalliana =(virens) and colum- 

 biana are not known outside of the Columbia Basin. 



Arizona System: (semifossil) Colorado Desert (R. E. C. 

 Stearns) tide Stearns. 



AMNICOLIDAE. 



Paludestrina protea (Could). 



Amnicola protea Gould, Proc. Bos. Soe. Nat. Hist. V, 18.")."), 

 129; Melania exigua Conrad, Proc. Phila. Acad. Nat. Sci., VIII, 

 1855, 269; Tryonia clathrata Stimpson, Am. Jour. Conch.. I, 

 1865. 54, PL VIII, 1 ; -Paludestrina protea Stearns, Proc. U. S. 

 Nat. Mns. XXIV, 1902, 227, text fig 1, PI. XIN-XXI; P. stokesi 

 Arnold, Mon. Pleist. Plio. San Pedro, 1903, 305, PI. VIII. :5 ; 

 *P. protea Hannibal, W. Coast Shells, 1910. 315, PI. Ill, 14-1 .">. 



As a fossil or semifossil, Paludestrina protea occurs abun- 

 dantly at many points outside its present known limits. Its 

 detection in the living state is fraught with difficulties due to 

 its small size and lacustrine habits, hence future collecting will 

 doubtless considerably increase its existing range. 



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