1901.] NATURAL SCIENCES OF PHILADELPHIA. 549 



rather long and lies backward in the suture; the whorl is then 

 rather strongly constricted and almost smooth, the riblets reappear- 

 ing behind the lip. Aperture oblique, circular, peristome narrowly 

 reflexed and doubled. Operculum thin, reddish-corneous, smooth 

 externally. 



Alt. 2.3, diam. 3.7 mm. 



Kagoshima, Satsuma, Kiusiu (Mr. Y. Hirase, No. 704), 

 The " neck" is more constricted than in A. melanojyoma, and 

 the operculum is thin. It differs in sculpture from the other 

 Japanese species of Alycceus, which are all a good deal alike in 

 form. 



Cyclophorus turgidus var. angulatus nov. 



Substance of the shell roseate ; thick and strong, distinctly angu- 

 lar or carinated at the periphery ; interior orange or orange-red. 

 Whorls 5. 



Alt. 23|, diam. 29 mm. 



Alt. 16, diam. 20 mm. 



Loo Choo (Mr. Y. Hirase, No. 713). ^ 



