1904.] NATURAL SCIENCES OF PHILADELPHIA. 31 



there are several spiral grooves, and some finer striae near the axis. A 

 well-grown specimen measures, length 10.5, diam. 2.5 mm. There are 

 about 13 postnepionic whorls. The shell figured is from Hirado, Hizen. 

 Dunker's type was from Deshima (near Nagasaki), also in southwestern 

 Kyushu. 



This species is apparently close to C. circinata A. Ad., the type of 

 Cingulina, found at Awa-shima, which is known to me by Adams' brief 

 description only. 

 Turbonilla (Cingulina) triarata n. sp. PI. V, fig. 48. 



Shell very slender and long, the length about four times the greatest 

 diameter; lateral outlines straight. White, glossy, slightly marked 

 with growth-lines. Sculpture of three spiral grooves on each whorl, the 

 lowest one at the suture below, the other grooves defining three nearly 

 flat spaces, the upper one narrowest, lower widest. Last whorl with 

 the third groove at the periphery, the base convex, very minutely and 

 closely striate spirally. Whorls 13, besides the elevated planorboid 

 nucleus which stands on edge at the summit. Suture channelled. 



Length 9.5, diam. 2.3 mm.; length of aperture 2.1 mm. 



Hirado, Hizen. Types No. 85,977, A. N. S. P., from No. 1,005 of 

 Mr. Hirase's collection. 



This form must stand near Cingulina japonica Clessin, 14 but agrees 

 with neither the description nor figure. Clessin states that his species 

 has a single line running below the suture, the rest of the whorl being 

 smooth, but he figures two more spiral lines ; and the last whorl, which 

 he says is subangular below, the base smooth, is figured with 5 spiral 

 lines. The proportions, 11 x 1.9 mm., are more slender than T. tria- 

 rata. One becomes accustomed to such discrepancies in Clessin's 

 work. His ideals of descriptive zoology are not lofty. 



Collonia rosa n. sp. PI. VI, fig. 53. 



Shell obliquely globose-turbinate, narrowly umbilicate, rose-red, 

 with two apical whorls yellow. Sculpture of somewhat unequal spiral 

 cords, about as wide as their intervals, and 25 to 27 in number on the 

 last whorl. Several of the cords, at unequal intervals, are slightly larger 

 than the others, and all are nearly smooth except near the suture and 

 umbilicus, where there are short radial folds. Spire short, conic. 

 Whorls about 4, convex. Aperture but slightly oblique, circular, white, 

 smooth and pearly within. Inner margin of the peristome thick and 

 white. A slightly sinuous cord ascends almost vertically into the 



14 Conchylien Cabinet, Eulimidce, p. 223, PI. 36, fig. 3. 



