32 THE NAUTILUS. 



irregular in some places. Whorls 4^, very convex, separated by a 

 deep suture, the last whorl large, rounded at the periphery and be- 

 neath. Aperture broadly lunate, slightly oblique. Peristome thin 

 and unexpanded, suddenly dilated and recurved at the axial inser- 

 tion, half covering the umbilicus. Alt. 10, diam. 17 mm. 



Shiujo-mura, Tosa. Type no. 84415. A. N. S. P., from no. 1015 

 of Mr. Hirase's collection. 



It is similar to C. perpunctatus, but nearly twice the size. In 

 O. fragilis the hairs stand about twice as far apart as in this species, 

 which is the first (JIdoritis from Shikoku Island. 



Kaliella xenica n. sp. 



Shell minutely perforate, pyramidal, much higher than wide, the 

 spire with nearly straight lateral outlines and very obtuse apex ; 

 thin, yellowish, faintly and finely striate. Whorls G|, slightly con- 

 vex, the last obtusely angular at the periphery, convex beneath. 

 Aperture broadly lunate, the peristome thin, columellar margin re- 

 rtexed. Alt. 3.7, diam. 2.7 mm. 



Shukunegimura, Sado. Type no. 84762 A. N. S. P., from no. 

 1041 of Mr. Hirase's collection. 



This species resembles K. praalta hx general shape, but its outlines 

 are noticeably more convex, the apex is more obtuse, and there are 

 fewer whorls. (Xenikos, strange.) 



A PROPOSED STUDY OF GONIOBASIS. 



BY A. A. HINKLEY. 



The article in the June Nautilus, under the above heading, by 

 Mr. A. C. Billups, was read with interest. It is time something 

 should be done to bring this interesting group of shells out of the 

 present chaotic condition. The work will be difficult, owing to more 

 or less variations in all the species and the wide geographical distri- 

 bution of some, together with the meager description often given and 

 sometimes drawn from only two or three specimens ; added to this, 

 some of the types are inaccessible or lost. 



There are twenty-four species of Goniobasis listed in G. W. Tryon's 

 monograph on StrepomcUidcB as being found north of the Ohio Kiver 

 or in that stream, viz. : 



