190 EUGLANDINA. 



San Antonio, Bexar Co. (type loc.) ; near Hondo; canyon of 

 the Pecos river, Val Verde Co. Also reported from Guada- 

 lupe, Goliad, Gonzales, Caldwell and Frio counties. 



Glandina truncata de Kay, ROEMER, Texas, p. 456. G. de- 

 cussata W. G. BINNEY, Terr. Moll., v, p. 86 ; Man. Amer. Land 

 Shells, p. 351, Texan localities, but not the description and 

 figure. G. texasiana Pfr., and G. decussata, W. G. BINN., 

 Third Supplement to Terr. Moll., v, pp. 194, 226, pi. 9, f. G 

 (teeth) . G. singleyana W. G. B., Fourth Supplement to Terr. 

 Moll., v, Bull. Mus. Comp. Zool., xxii, no. 4, p. 163, pi. 1, f. 4, 

 1891 (Bexar Co.). SINGLEY, Contrib. Nat. Hist. Texas, in 

 Fourth Ann. Rep. Geol. Survey of Texas, 1893, p. 302. 

 Euglandina singleyana PILS. & FERR., Proc. A. N. S. Phil a. 

 1906, p. 143. 



This common species of the Texan Lower Sonoran area 

 differs from other forms found in the United States by its 

 distinct though fine spiral sculpture. It has far finer sculp- 

 ture than E. corneola and a much more obtuse apex. E. de- 

 cussata, a Guatemalan species, perhaps extending into south- 

 ern Mexico, is conspicuously different by its peculiar colu- 

 mella. E. texasiana stands close to singleyana, but lacks spiral 

 sculpture and is a smaller, more slender shell. 



E. singleyana was first noticed by Dr. Ferdinand Roemer, 

 who found it at New Braunfels in 1849. Binney subsequently 

 referred Texan examples to his G. corneola, which he decided 

 later to be a synonym of G. decussata Desh. This resulted 

 in a curious complication in his later works, wherein the name 

 belongs to one species (decussata), the figure and description 

 to another (corneola), and the locality and anatomical de- 

 tails to a third (singleyana). 



Figs. 48, 49 of plate 24 represent topotypes from San An- 

 tonio, Texas. Figs. 50, 51 are from a New Braunfels ex- 

 ample. 



31. E. TEXASIANA (Pfr.). PI. 24, figs. 52, 53, 54. 



Vol. I, p. 34. This species seems to be confined to north- 

 eastern Mexico and the extreme southern angle of Texas, some 

 specimens before me being labeled Brownsville, Texas. A 



