1901.] NATURAL SCIENCES OF PHILADELPHIA. <H > 



The absence of any trace of angulatiou around the umbilicus, 

 and the small size of the latter, give this race an appearance of 

 distinctness. 



Clausilia ducalis Kobe-It. 



This magnificent species was described from a specimen of un- 

 known locality further than the indefinite " interior of Nippon" 

 which served as habitat for Rein's Japanese collection. The type 

 is described as yellowish horn-colored, and 36 mm. long, 8 wide, 

 the aperture 9 mm. long. Mr. Hirase has lately sent specimens 

 from Miya-nmra, in Hida Province, which agree with ducalis in 

 the brilliant gloss and large apex, but have the last two whorls 

 dark vinaceous-brown, with a yellow sutural border and sprinkled 

 with fine yellow dots; the two next earlier whorls are rather bright 

 yellow, still earlier ones are worn. 



Length 32J to 34, diam. 8 mm. 



It is a magnificent species. 



At Kiyomi-mura, Hida, an interesting variety occurs, the 

 shell being longer and narrower, less glossy, the surface more 

 striate, last whorl more cylindric. Color light olivaceous yellow. 



Length 35, diam. 6-J- mm. ; whorls 11J. 



This race I call var. dorcas. Some specimens are shorter, length 

 28, diam. 6J- mm. ; whorls 10. 



Truncatella kiusiuensis n. sp. 



Shell nearly cylindric, slightly tapering, pale red, composed of 

 4^ whorls, the upper one truncate and plugged. Sculpture of 

 strong, regular, nearly straight ribs, about 20 on the last whorl. 

 There is a high, narrow rib behind the outer and basal lips, and 

 a rounded rib or prominence around the umbilical region. Aper- 

 ture oval; the inner lip covered with a heavy callus. 



Alt. 7, diam. 2.6 mm. 



Hirado, Hizen (Mr. Y. Hirase, No. 844a). Also Tane-ga- 

 shima (Hirase, No, 81 Ic). 



This is one of the few Old World species of Truncatella in 

 which there is a rib or crest behind the lip. It differs in this 

 respect from T. valida Pfr., which is found in Okinawa or Riukiu 

 Island. The latter is also larger and has more numerous, smaller 

 ribs. 



Truncatella Pfeifferi Martens is the only species of the genus 



