762 PROCEEDINGS OF THE ACADEMY OF [DcC, 



There are therefore 33 distinctively Neotropical species; 5 species 

 as characteristic of the Texan fauna; and 8 species with a wide distri- 

 bution in both regions, or l^elonging to groups with such a distribution. 

 Part of the latter are doubtless of Neotropical origin ultimately, 

 but in two cases {Zonitoides arboreus and Bifidaria curvidens) truly 

 Palsearctic. 



HELIOID^. 

 Helix aspersa Mull. 



Tlalpam, State of Mexico, and Pueblo, State of Pueblo; at both 

 places in abundance. AtTlalpam they are all small, diam. 24 to 29 mm., 

 and similar to Kobelt's fig. 364 of Plate 69 in Vol. Ill (n. F.) of Ross- 

 massler's Iconographie, except that there are 5 or 4 bands, as in fig. 

 350 of PL 67. The shells from Pueblo are larger, 26 to 33 mm. diam., 

 with band formulae varying from 1 (2 3) 4 5 to (1 2 3) (4 5). 



Lysinoe humboldtiana buffoniana (Pfr.). 



Diente, near Monterey, Nuevo Leon. Adult shells measure from 

 27 X 33 to 37 x 42 mm. 



Trichodiseina cordovana (Pfr.). 



Texolo, V. C; caiion 4 miles west of Victoria, Tamaulipas; Diente, 

 near Monterey, Nuevo Leon. The last two localities extend the range 

 of this species far to the north. 



Metostracon mima Pilsbry. 



Proc. Malac. Soc. London, IV, p. 27, PI. 3, figs. 1-11. 

 Morelia and Uruapam, iMichoacan. 



Xanthonyx salleanus (Pfr.)- 

 Texolo, V. C. 



Praticolella berlandieriana (Moric). 



Around Victoria, Tamaulipas, and at ^lonterey and Topo Chico, 

 Nuevo Leon. 



Praticolella griseola (Pfr.). 



Antigua, V. C. 

 Praticolella ampla (Pfr.). 



Texolo, V. C. 



Praticolella strebeliana Pils. PI. LI, figs. 6, 6a. 

 Proc. Acad. Nat. Sci. Phila., 1899, p. 394. 



Diente, near Monterey, Nuevo Leon. 

 Polygyra plagioglossa (Pfr,). 



Patzcuaro, Michoacan; Pueblo, State of Pueblo. 



