52S PROCEEDINGS OF THE ACADEMY OP [August, 



Kyoto (Rein, Hirase; type locality); Shirono, Buzen; Gojo 

 and Nohara, Yamato; Takasaki, Kozuke (Y. Hirase); Yoko- 

 hama and Tokyo (F. Stearns, purchased). 



Clausilia digonoptyx Boettger. PI. XXVIII, figs. 31, 32, 38, 34, 35. 



Boettger, Clausilienstudien, p. 58, footnote (1877); Jahrb., V, p. 45, 

 PI. 3, fig. 1; PI. 4, fig. a. Kobelt, Fauna, p. 69, PI. 8, fig. 17. 



A more glossy shell than C. tau, finely rib-strictte, the superior 

 lamella higher than in C. tau, the inferior strongly converging 

 toward it in the throat. The upper palatal plica is shorter than in 

 C. tau, and united with a very low lunella, interrupted in the 

 middle, and curving inward below in a short lower palatal plica. 

 The plicae and lamella together form an arch or bow rather than a 

 r-shaped figure. It does not attain quite the size of C. tau, but 

 is larger than C. comes. The conspicuous approximation of the 

 lamellae and the rib-striation are its most striking features. The 

 conspicuous striation unfortunately did not come out well in the re- 

 production of my figure 32. 



The types were collected by Rein, exact locality unknown. Mr. 

 Hirase has sent specimens from the following localities : Manabe, 

 Hitachi; Takasaki, Kozuke; Yamagachi, Tajima; Nishigo, Uzen. 



Section REINIA Kobelt. 

 Clausilia variegata var. nakadai nov. 



Shell very much smaller than variegata or nesiotica, length 7, 

 diam. 2 mm.; brownish, the upper whorls whitish or somewhat 

 buff -streaked; whorls 6J. Superior lamella short, widely separated 

 from the spiral lamella, the other lamellae as in var. nesiotica. 



Hachijo-jinia, Izu. Types No. 83,299, A. N. S. P., from No. 

 942 of Mr. Hirase' s collection. 



Section PSEUDONENIA Bttg. 



So far as the Japanese species are concerned, it is difficult to see 

 any important difference between Pseudonenia and Euphcedusa. 

 Each has a clausiliuin of the broad type, either rounded or some- 

 what acuminate at the apex, and the lamellae and plicae are of the 

 same type in both sections. The Japanese forms referred to 

 Pneudonenia I would therefore place under Euphcedusa, but pend- 

 ing a general revision of the groups in question, the generally 

 accepted arrangement is here retained. 



