321 



JOURNAL OF CONCHOLOGY. 



Vol. 14. JULY, 1915. No. 11. 



DESCRIPTION OF A NEW RISSOINA. 



By J. R. LE B. TOMLIN, M.A. 



(Read before the Society, June gth, 1915). 



Rissoina ^miltozona sp. nov. — 



Shell regularly subulate, solid, shining, white, with a broad 

 brown band encircling the lower part of each whorl, and some- 

 times an additional fine brown line on the last whorl below the 

 band ; apex strongly subulate ; suture strongly impressed ; whorls 

 9 to 10, much flattened, protoconch consisting of two whorls, 

 which are smooth and glassy, third whorl smooth with a prom- 

 inent keel in the centre (visible, however, only in very fresh 

 specimens), the others strongly ribbed longitudinally ; there are 



Rissoina miltczona sp. nov. 

 about twenty ribs on the basal whorl, all extending right to the 

 margin, and about eighteen on the penultimate ; the basal whorl 



1 ^XiXtos = red. 



