116 Til K NAUTILUS. 



columellar lamella is immersed and there are four strong palatal 

 plica?. Length 29, diam. 6 mm. Okinoshima, prov. Tosa (Y. 

 Hi rase). 



Trishoplita Smithiana n. sp. Shell about the size and color of T. 

 goodivini (Smith), hut much more depressed, the spire low, convexly 

 conic, whorls 5^, the last angular at the periphery, descending in 

 front ; sculpture of slight growth-wrinkles and extremely fine, 

 crowded spiral stria?. Aperture transversely oval, oblique; peris- 

 tome thin, expanded, reflexed below, the margins approaching, 

 parted by a parietal wall in length about one-fifth the circumference 

 of the peristome. Umbilicus open. Alt. 8, diam. 13, width of um- 

 bilicus 2 mm. Arakura, prov. Tosa (Mr. Hirase). Much more 

 depressed than T. goodwini, with lower spire and wider umbilicus, 

 named for Mr. E. A. SMITH, who has given us several valuable 

 papers upon Japanese mollusks. 



Ganesella myotnphala var. oniphalodes n. v. Similar to G. myom- 

 phala in color and texture, but much depressed and openly umbili- 

 cate, the columellar lip but slightly overhanging the umbilicus. 

 Alt. 19, diam. 32, width of umbilicus 3 mm. Omikado, prov. Inaba 

 (Mr. Y. Hirase). Specimens in the collection of Mr. Addison 

 Gulick show that in true myomphala the umbilicus is not always 

 wholly closed, but, unlike this variety, the columellar lip is flattened 

 and spreading. 



Ganesella Wiegmanniana n. sp. Shell deeply and (for the genus) 

 openly umbilicate, much depressed, thick lens-shaped, angular at the 

 periphery, encircled by a faint reddish-brown band above the 

 periphery, surface somewhat glossy, sculptured with oblique growth- 

 wrinkles, but without spiral striae other than a few rather coarse, 

 irregularly-developed spirals sometimes visible on the base. Spire 

 low, convexly conoid ; whorls 5^, moderately convex, the last angular 

 at the periphery, somewhat convex beneath, but slightly descending 

 in front, more or less constricted behind the lip. Aperture oblique, 

 irregularly lunate-oval, the peristome white, narrowly expanded, 

 thickened within, the basal margin straightened, thickened or obso- 

 letely toothed in the middle ; columellar end dilated, slightly over- 

 hanging the umbilicus. 



Alt. 11, diam. 18^ to 20^ mm.; width of umbilicus 2 mm. 



Kochi, prov. Tosa (Y. Hirase). 



Tin's species is clearly distinct from the strongly earinated form of 



