no. 1642. NEW SHELLS FROM MEXICO— DALL. 179 



rather narrow ; outer lip slightly flexuous, produced near the middle ; 

 inner lip with a slight glaze on the body ; pillar very short, strongly 

 twisted, its outer edge slightly thickened, a deep, rounded oblique 

 sulcus in front of it; anterior margin of the aperture extended in 

 front of the end of the pillar. Length 32; of spire 15; maximum 

 diameter 16.5 mm. Another measures 35 mm. long and 17 in maxi- 

 mum diameter. 



Type.— Cat. No. 198090, U.S.N.M. Tamaulipas, Mexico, Dr. E. 

 Palmer. 



Named for Dr. Paul Bartsch of the U. S. National Museum. 



Especially characteristic are the rounded, bee-hive shaped spire 

 and the flexuous outer lip. 



STREPTOSTYLA TOYUCA Dall, new species. 



Plate XXIX, fig. (». 



Shell melampiform, rather large, flesh-colored, with about 7 whorls, 

 separated by a narrow, rather deeply channeled suture; spire 

 conic, subturrited ; nucleus of less than 1 whorl, obscurely radially 

 wrinkled ; following whorl and a half with flexuously radial small 

 wrinkles, which at the periphery break up into numerous hair-like 

 prolongations, the whole not unlike a paint brush except for the 

 flexuosity; adult sculpture in front of the suture of fine, sharp, ele- 

 vated, vertically axial lines, with wider flattish interspaces about half 

 a millimeter wide ; in the interspaces are one or two faint axial wrin- 

 kles; at about the beginning of the penultimate whorl these wrinkles, 

 about midway between the sutures, rise to an equality with the ele- 

 vated lines and so continue, even and regular, to the anterior end of 

 the shell ; there is no spiral sculpture except occasional impressed 

 lines apparently due to fractures; last whorl flattish at the sides, 

 conic, aperture narrow; outer lip thin, excavated in front where it 

 turns to meet the axis; pillar thin, strongly contorfed, but not pervi- 

 ous. Altitude of shell 27 ; of aperture 17 ; maximum diameter 15 mm. 



Type.— Cat. No. 107822, U.S.N.M. Collected by E. A. Goldman, of 

 the U. S. Biological Survey, at Metlal toyuca, Puebla, Mexico. 



Remarkable for its apical sculpture and channeled suture. 



STREPTOSTYLA JILITLANA Dall, new species. 

 Plate XXIX, fig. 8. 



Shell thin, light straw-colored, subtranslucent, with about 6£ 

 whorls, separated by a distinct but not channeled or denticulate 

 suture; spire short and blunt; nucleus brilliantly polished, smooth, 

 glassy for about 2-| whorls, when the axial sculpture is gradually 

 developed; adult sculpture of slightly flexuous, rather broad, flat- 

 tish, equal riblets with sharply grooved linear interspaces, about 



