1901.] NATURAL SCIENCES OF PHILADELPHIA. 615 



The absence of any trace of angulation around the umbilicus, 

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

 distinctness. 



Clausilia ducalis Kobelt. 



This magnificent species was described from a specimen of un- 

 known locality further than the indefiDite " 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-mura, in Hida Province, which agree with ducalis in 

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

 <iark vinaceous-browu, 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 32 J 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. 6i mm.; whorls 11|^. 



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

 28^, diam. 6^ mm. ; whorls 10. 



Truncatella kiusiueusis n- »]>■ 



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

 4^ Avhorls, 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 Taue-ga- 

 shima (Hirase, No. 811c). 



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. 



Tnmeatella Pfelferi 3Iarteus is the only species of the genus 



