i) 
No 
NI 
1921.] B. PRASHAD: Gastropod Molluscs. 
Measurements of shells (in millimetres). 
Specimen A is from Basra, and B (the type) from the creek 
connected with the Diala River. 
A. B. 
Length of shell ay 16°8 17°6 
Breadth of shell oe ont eal 8 
Length of aperture 8:2 9° 
Breadth of aperture as of 3°9 5 
