THE NAUTILUS. 



VOL. XXIX. MAY, 1915. No. 1 



THE JAPANESE SPECIES OF BIANFORDIA. 



BY HENRY A. PILSBRY. 



I have recently received a series of Blanfordias, representing 

 a new species, from Prof. Seitaro Goto of the Zoological Insti- 

 tute of the Science College, Imperial University of Tokyo. 

 Professor Goto writes as follows: "I am interested in these 

 snails as the intermediate hosts of the Japanese blood fluke, 

 whose life-history a former student of mine has succeeded in 

 making out. He has already published a short preliminary 

 paper on the subject and I hope that he may be able to quote 

 your authority in his full paper in regard to the specific identity 

 of the snails. The locality of these specimens is Sakai, Saga 

 Prefecture (Kyushu)." 



BLANFORDTA NOSOPHORA (Robson). 



The shell is perforate, turrited, solid, of a russet color, the 

 worn summit pink or dark vinaceous. The surface is glossy, 

 faintly marked with growth-striae. The early whorls are want- 

 ing in the adult stage, 5 to 7 whorls remaining. These are 

 strongly convex, united by a deep suture. The last whorl 

 swells out to form a rounded ridge or varix behind the peris- 

 tome. The aperture is vertical, ovate, somewhat diagonal; 

 deep within it is of a vinaceous color, then yellowish in a band 

 under the varix, finally olive at the edge of the lip. The per- 

 istome expands and is narrowly recurved at the edge, and a 

 transparent callus connects the outer and inner margins. 



