STREPTAXTS. 67 



S. CROSSEI, Pfeiffer. PI. 16, figs. 3, 4. 



Somewhat solid, closely ribbed-striate above, smooth below; 

 whorls 7, the last deflected in front ; aperture oblique, transversely 

 auriform, with a parietal lamina, a central small tooth within the 

 outer lip, and a bituberculate transverse tooth at its base ; waxy, 



hyaline. Diaru., 8'5 mill. 



Near Rio Janeiro, Brazil. 



S. LEMYREI, Morelet. PI. 16, figs. 12, 13. 



Whorls 5, regularly striate ; subtranslucent, moderately solid ; 

 aperture oblique, subquadrately rounded, peristome reflected, at 

 the base partly covering the narrow umbilicus, within are two 

 lamellae, one of them hardly visible externally, the other parietal, 



linguiform, short. Diair.., 11 mill. 



Cambodia. 



Section EUSTREPTAXIS, Pfeiffer, 1877. 

 Subsection I. Edentulse. 



S. NOBILIS, Gray. PI. 13, figs. 53, 54, 61, 64, 68, 41, 42. 



Turbinate, moderately thick, umbilicus rimate ; whorls 5-J, 

 closely striated above, smooth beneath, shining ; very light 

 olivaceous or yellowish white, with irregular greenish striga- 

 tions on the spire ; lip expanded-reflected. Diam., 1 inch. 



Liberia, Sierra Leone. 



The synonyms include ? Helix pagoda, Fer.; H. Monroviana, 

 Rang (juvenile); H. Blandingiana , Lea; St. rimata, Pfr. (fig. 

 68); St. Recluziana, Petit (figs. 41, 42); the latter a small 

 variety. 



S. CRAVENT, E. A. Smith. PI. 16, figs. 6, 7. 



Narrowly umbilicated, obliquely distorted, smooth, glossy, 

 dirty milky-white ; whorls 7, closely costulately striated at the 

 suture, the last whorl suddenly descending in front, then rising 

 somewhat upon the preceding whorl, very obliquely deviating ; 

 outer lip a little thickened and reflected, sinuated at the suture. 

 Diam. 22 mill., alt. 29 mill. 



On hills between the mouth of the river Dana 



and Mombasa^ East Africa (Kirk). 



