214 



ZONITID^E. 



pressed, thin, almost smooth, more or less polished, translucent, 

 whitish horny, in some cases faintly striated with subobsolete spiral 

 lines; spire convex, apex obtuse, suture impressed ; whorls 3|, 

 rapidly increasing, the last rounded at periphery, moderately 

 tumid beneath ; aperture oblique, large, roundly lunate ; peristome 

 thin, slightly arcuate above, columellar margin subvertical, slightly 

 reflected. 



Major diam. 8|, min. 7, height 5 mm. 



B 



[Fig. 75. Durgella levicula. 



A. Animal, view of right side. From a spirit-specimen. 



B. Ditto, left side. Ditto, much enlarged. 



C. Extremity of foot and lobe above mucous gland, as in life. 



D. Jaw, X 3, and teeth of radula, the centre and admedian. 



E. The generative organs. X 6. 



F. Shell, with sutural spiral. X 3.] 



Hob. Tenasserim ; Phie Than, Methan at base of Mule-it 

 Range, &c. This or closely allied forms are found in Pegu, 

 also Balasore Hills, Orissa (W. T. 5.); Golconda in North- 

 eastern Madras (Beddome). 



Animal pale ochre, with a dusky line on the upper part of the 



