398 PROCEEDINGS OF THE ACADEMY OF [1899. 



tliei'eto by Dr. von Martens, short in the spire, markedly cylin- 

 drical, with the columella only weakly twisted. The region around 

 Monterey is very different in physical characteristics from that 

 inhabited by S. shuttleworthi. It is considerably further north 

 than Streptodyla has heretofore been found. 

 Salasiella pfeifferi n. n. 



This name is proposed ior Achatina pulchella Pfr., P. Z. S., 

 1856, p. 379, not Achatina pulchella Spix, 1827. 



Dr. E. von Martens has figured the type, Biologia Centrali- 

 Americana, Mollusca, p. 83, pi. 5, f. 9. 

 Pseudosubulina berendti, var. occidentalis n. v. 



Numerous sjDecimens collected at Uruapam, State of Michoacau, 

 represent a variety of the East Mexican P. berendti, distinguished 

 by the weaker, less crowded rib-strise and wider aperture. Alt. 

 15, diam. 3.2, oblique length of aperture 3 mm. ; whorls 12. Alt. 

 12.7, diam. 2.8, oblique length of aperture 2.8 mm. ; whorls 11^,. 

 Pseudosubulina texoloensis n. sp. 



Shell turreted, imperforate, faintly greenish yellow tinted, com- 

 posed of numerous short, Avide whorls, sculptured with close-set 

 rib-strise separated by smooth, slightly wider intervals; outlines of 

 spire decidedly concave above. AYhorls 10^, convex, the ribs 

 subobsolete on the base of the last one. Apex obtuse, the first 

 whorl rapidly widening, smooth, the second becoming very finely 

 rib-striate, the next three whorls more coarsely ribbed, scarcely 

 increasing in width or in the diameter of the spire ; following 

 whorls gradually widening and increasing the diameter of the 

 spire; last whorl short, moderately convex, abruptly coutz'acting 

 below. Aperture ovate- trapezoidal ; columella moderately con- 

 cave, abruptly truncated, Achatina-like, below. 



Alt. 9.2, diam. 2.5, length of aperture 2 mm. 



Texolo Falls, State of Vera Cruz, Mexico. 



The shortness of the whorls and contraction of the upper part of 

 the spire (as in the young of many species of Urocopjtis), are the more 

 prominent features of this species. The columella is much more 

 strongly truncated than in P. berendti. Generic position not verified. 

 Spiraxis uruapamensis n. sp. 



Shell turreted-conic, decidedly tapering, the lateral outlines a 

 Httle concave above; corneous, with Avhite riblets; apex obtuse. 



