776 PROCEEDINGS OF THE ACADEMY OF [DeC. 



Leptinaria tamaulipensis n. sp. PI. L, fig. s. 



Shell perforate, ovate-conic, pale yellowish-corneous. Surface finely 

 and closely, irregularly and weakly striate; glossy. Spire straightly 

 conic, the apex quite obtuse. Whorls 5^, convex. Aperture less than 

 half the total length. Columella vertical, refiexed, with a rather 

 small fold in the middle. No parietal lamella. Length 6.8, diam. 

 3.7 mm. 



Tamaulipas, in a canon al^out 4 miles west of Victoria, elevation 

 about 3,000 feet. Types No. 85,909, A. N. S. P., collected by Mr. R. N. 

 Rhoads, January 21, 1903. 



This species is related to L. mexicana and L. martensi, but differs 

 from both in wanting spaced riblets. No Leptinaria has hitherto been 

 reported from north of Misantla, V. C, so that the range of the genus 

 northward is greatly extended b}^ the discovery of this species. Five 

 specimens were found. 



SUCCINEID^. 



Succinea tlalpamensis Pilsbry. PI. XLVIII. figs. 4, 4a. 

 Proc. Acad. Xat. Sci. Pliila., 1899, p. 401. 

 Near Tlalpam, State of Mexico. Types No. 77,207, A. N. S. P. 

 The figures show the extremes of variation in the t3q)e lot. 



Succinea tlalpamensis cuitseana Pils. 



Proc. Acad. Nat. Sci. Phila., 1899, p. 401. 

 Lake Cuitseo, near Huingo, Michoacan. Types No. 77,208, A. N. 

 S. P. 



Succinea virgata Marts. 



Texolo, State of Vera Cruz. Many of the shells want the white rays 

 entirely, and in some others they appear only on the spire. 



AURICULID^. 



Carychium exiguum mexicanum Pils. 



Texolo, State of \'era Cruz, and Diente, near Monterey, State of 

 Nuevo Leon. 



LIMN^IDiE. 

 Limnsea attenuata Say. 



Tlalpam, near the City of Mexico. 

 Limnaea columella Say. 



Lake near Uruapam, State of ^lichoacan. Pale 3'ellowish-corneous 

 specimens, about the size of var. cJumipioni Maris., but somewhat 

 shorter, and of lighter color. The spiral sculpture is well developed 



