214 



ZONITIDiE. 



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. 



^^ 



[Fig. 75. — BiirgcUa levkiila. 



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



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



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



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



E. The generative organs. X 6. 



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



Hah. Tenasserim : Phie Than, Methan at base of Mule-it 

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

 also Balasore Hills, Orissa (TF. T. B.) ; Golconda iu jN'orth- 

 eastern Madras {Beddome). 



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



