1906.] 



NATURAL SCIENCES OF PHILADELPHIA. 



163 



whorl; narrower flat columella and narrower umbilicus, which is like 



that of typical bulimoides. A specimen measures, alt. 10, diam. 7.7, 



aperture 7.2 mm. (figs. 18, 19). 



Lymnaea bulimoides techella (Hald.). Figs. 20-23. 



Limncea techella Hald., Amer. Journ. of Conch., Ill, p. 194, pi. 6, fig. 4. 

 (Texas.) 



Shell obese, with acutely conic spire, of five or six convex whorls; 

 pale yellowish or light brown, finely striate and usuxilly malleated, 

 the flattened facets obliquely descending. Last whorl very ventricose, 

 umbilicus large. Aperture short-ovate, about three-fifths the total 

 length; basal lip expanded, colimiellar lip broadly dilated, without a 

 fold. Umbilicus large. 



Fig. 23. 



Cotype. 

 Length 8 



Diam. 5.1 



Aperture 4.9 



In the area under consideration we have seen specimens from the 

 following places: 



Texas: Fort Worth (Sampson); Royse, Rockwall county (Ragsdale); 

 Dallas (E. Hall); Houston (Pilsbry); San Marcos, Hays county 

 (Pilsbry and Ferriss); mouth of Nueces river (Singley). 



New Mexico: Albuquerque, and McCarty, Valencia county (Ash- 

 mun) ; Rio Grande at Mesilla (Cockerell). 



Arizona: Salt river at Tempe (Ashmun). 



Other records could probably be supplied from the literature, but 

 it seems usually to have been referred to as L. bulimoides. Figs. 20-22 

 represent specimens from San Marcos, Hays county, Texas; fig. 23 is 

 ajnore malleate shell from Salt river, Tempe, Arizona. 



