1901.] NATURAL SCIENCES OF PHILADELPHIA. 641 



specimens of tetraptyx, collected by Himgerford, is before me, 

 kindly lent from the collection of Mr. E. R. Sykes. 

 Clausilia Addisoni Pilsbry. PI. XXXVIII, figs. 56, 57. 



C. brevior var. Addisoni Pils., these Proceedings for 1900, p. 677 

 (January 28, 1901). C. Addisoni Pils., t. c., p. 502, under C. ster- 

 eoma. 



Shell obesely fusiform, much attenuated and with concave out- 

 lines above, inflated below, the last whorl narrower and tapering. 

 Light brown or corneous. Rather strongly and coarsely striate, 

 more coarsely so on the last half whorl. Aperture squarish -ovate, 

 the lip reflexed, somewhat thickened, white. Lamellae about as 

 in C. brevior. The subcolumellar lamella barely emerges or is 

 continued to the lip-edge. The three palatal plicae are slightly 

 shorter than in C. brevior, and there is a very low, subobsolete, 

 straight lunella, or at least a low callous deposit between the second 

 and the lowest plicae, and connected with the latter. 



Length 18, diam. 4.2 to 4.7 mm., whorls 9J. 



Length 16, diam. 4.5 mm., whorls 9. 



Ari-mura, a village on the southern side of Sakura Island, in 

 Kagoshima Bay (Addison Gulick) ; Kagoshima and Kajima, 

 Satsuma (Mr. Hirase); Isshochi, Higo (Hirase); all in southern 

 Kiushiu. 



This form is very much like C. brevior, of which I at first con- 

 sidered it a variety. It is slightly stronger, larger than any but 

 the largest specimens of brevior, and differs in having a callous 

 pad or rudimentary lunella above the lower palatal fold, and in 

 the decidedly coarser striation. The clausilium is thicker at the 

 apex, and the palatal side is more convex (figs. 54, 55). 



Geographically it is very widely separated from all parts of the 

 range of C. brevior; and as Mr. Hirase has not found either 

 species at any of the multitude of intermediate localities explored 

 by him or his collectors, it seems unlikely that there are any con- 

 necting forms in the intermediate territory the southwestern half 

 of Nippon and northern Kiushiu. 



It is named in compliment to Mr. Addison Gulick, formerly of 

 Osaka. 



Clausilia Jacobiana n. sp. PL XXXIII, figs. 58-62 ; PL XXXIX, figs. 66-69. 



Shell thin, brown, rimate, fusiform, the upper half rapidly 

 tapering, several earlier whorls attenuated, the penultimate whorl 



41 



