86 VESPERTIL1O. 



Sect. 4. Vespertilio, Klein. 



Shell oval-oblong, more or less ventricose. Spire terminated 

 by a regularly spiral summit, papilliform, but having an appar- 

 ently crenulated nucleus, caused by the presence of numerous 

 little tubercles, more or less apparent. Columella four-plaited. 



Y. VESPERTILIO, Linn. PI. 25, figs. 43-49, 52. 



Yellowish flesh-color, covered by an irregular network of 

 chestnut brown, which is occasionally confluent into broad 



angulated blotches. Length, 3-5 inches. 



Philippines Moluccas. 



One of the most variable species in form, development of 

 spines and folds, and coloring. I figure F. pellis-serpentis. Lam. 

 (fig. 46)}! V. mitis, Lam. (fig. 49)yF. serpentina, Lam. (fig. 4T), 

 and F. lineolata, Kiister (fig. 52). Also a reversed specimen 

 (fig. 45). 



Y. PULCHRA, Sowerby. PL 25, figs. 50, 51. 



Pale flesh-color, with white specks, and small chestnut dots, 

 irregularly disposed in three bands. Length, 2*5-3 inches. 



N. and N. E. Australia. 



V. Wisemani, Brazier (fig. 51), is acknowledged by its author 

 to be a variety only, of F. pulchra. 



Y. NIVOSA, Lam-. PI. 25, fig. 53. 



Grayish flesh-color, sprinkled with small white specks ; with 

 two revolving bands, consisting of longitudinal, subparallel, 

 more or less interrupted chestnut-colored lines ; columella and 

 aperture saffron-yellow. Length, 2*5-3'5 inches. 



W. Coast of Australia. 

 Y. NORRISII, Gray. . PI. 25, fig. 55. 



Grayish brown, flecked with white and less numerously with 

 brown ; there are two interrupted bands of darker color, here 

 and there marked with longitudinal lines ; the shoulder also is 

 darker and strigate with brown ; aperture light chocolate within. 



Length, 2*5-3 inches. 



W. Coast of Australia. 



The markings on the bands frequently assume a somewhat 

 irregular checker-board appearance. Dr. Gray described this 

 species in 1838, and Sowerby (probably finding a specimen 





