348 PROCEEDINGS OF THE ACADEMY OF [June, 



very broadly lunate; peristome rather narrowly reflexed, purple, 

 the margins somewhat approaching, connected across the parietal 

 wall by a slender, raised cord. 



Alt. 9, greater diam. 19, lesser 15J mm. 



Alt. 9^-, greater diam. 18, lesser 15 mm. 



Alt. 7J, greater diam. 15, lesser 12 mm. (small form). 



Oshima, (Mr. Y. Hirase, No. 354). 



This fine species has the sunken spire of the typical forms of the 

 genus from the Moluccas, etc. It is a larger and much finer species 

 than the two hitherto described from Japan, C. oscitans (Martens) 

 and G. fragilis Gude, neither of which has the well-developed per- 

 istome of C. eucharistus. Three of the specimens sent are of 

 about the same size, but another is conspicuously smaller, with the 

 spire perceptibly more sunken, and the low "tooth" within the 

 basal margin of the peristome is subobsolete. 



Suooinea Hirasei n. sp. 



A species grouping with 8. pfeifferi of Europe and 8. retusa of 

 America. Elongate, fragile, reddish or corneous, amber- colored, 

 composed of 2^- very rapidly enlarging whorls, the last one very 

 large, roughened by rather coarse growth-wrinkles. Aperture long- 

 ovate, somewhat effuse below, the margins regularly arcuate. 



Length 16, diam. 9, longest axis of aperture 13, width 6J mm. 



Tsuchiura, Hitachi, in eastern Hondo (Mr. Y. Hirase, No. 

 642). 



Both of the Succineas previously known from Japan, S. lauta 

 Old. and S. horticola Reinh. , belong to the group of species having 

 very convex whorls, like S. putris or S. obliqua. This new one 

 goes with the lengthened species, and is very like 8. retusa Lea 

 (ovalis Gld. ), but the Japanese form is rather less effuse than the 

 American. 



Cyclophorus Hirasei n. sp. 



Shell narrowly umbilicate, turbinate, with elevated spire, solid ; 

 greenish yellow, with a rather wide black belt just below the peri- 

 phery, which is marked with a pale belt, and several dark lines 

 and bands beneath, more or less interrupted at short intervals; the 

 upper surface marked with numerous dark bands, interrupted 

 obliquely or in zigzag fashion; the bands retaining their distinct- 

 ness or more or less confluent into zigzag stripes. Whorls 5J- to 



