1902.] NATURAL SCIENCES OF PHILADELPHIA. 361 



About 8 short, almost tuberculiform palatal plicae stand iu a lateral 

 position, the upper and lower ones being a little larger. 



Length 28^, diam. 8^, length of aperture 9 mm. 



Length 28f , diam. 7^, length of aperture 8J mm. 



Length 29, diam. 8, length of aperture 8^ mm. 



Clausilium long and narrow, parallel-sided, tapering and thin at 

 the distal end, moderately excised on the columellar side of the 

 filament. 



Tomisato, Kii. Types No. 82,468, A. N. S. P., from No. 762 

 of Mr. Hirase's collection. 



In this species the spire is shorter, thicker and more obtuse than 

 in any form of C. martensi which has come under my observation. 

 It is also smaller, with fewer whorls. 



In the type specimens there remams very little cuticle, and wliat 

 there is is extensively, minutely pitted and of a yellow or golden 

 color around the pits. 



Named in honor of the well-known Japanese zoologist. It will 

 be figured in connection with a review of the section Megalo- 

 'phczdvMt. 

 Clausilia ducalis var. decapitata n. v. 



Much smaller than the typical ducalis or var. dorcas, base more 

 tapering. Early whorls lost in the adult stage, only 7 to 7^ remain- 

 ing, the summit being thus very blunt. The surface is dull, finely 

 and weakly striate, more deeply so on the base. Palatal plicie 4, 

 the upper long ; no lower palatal plica. 



Length 25, diam. 6 mm. 



Length 22^, diam. 6^ mm. 



Kashima, Harima. Types No. 83,239, A. N. S. P., from No. 

 913a of Mr. Hirase's collection. 



Section HEMIPH^DUSA Boettger. 



Group of C. mblunellata. 



Mollendorff, Journ. Asiatic Soc. of Bengal, LIV, pt. 2, p. 63 (1885). 

 Pilsbry, these Proceedings for 1901, pp. 477, 649. 



This group was orignially defined from species collected in the 

 region of Nikko and Lake Chusenji, in Province Shimotsuke. 

 Mr. Hirase's researches have now brought to light species far to the 

 southward, in Kii Province, and extending its range northward to 



