90 THE NAUTILI'S. 



li may be noticed in this connection that towards the north, /'. 

 qiicp.sita becomes smoother and more glossy than toward the southern 

 limit of its range in middle Hondo. 



Trishoplita goodwini var. kyotoensis Pilsbry, n. v. 



Shell rather narrowly umbilicate, thin, somewhat translucent, pale 

 brown throughout, glossy, striatulate, but without spiral lines. Spire 

 low-conic ; whorls 5, convex, the last rounded at the periphery, 

 hardly descending in front. Aperture oblique, rounded, about one- 

 fourth of its circumference excised at the parietal margin ; peristome 

 narrowly but distinctly expanded, thin, pale. Alt. 5^, diam. 8-| mm. 



Kyoto (Mr. Y. Hirase). 



This form resembles T. goodwini var. fusca, but the umbilicus is 

 smaller, there is a half whorl less, and no spiral strias, which in fuse a 

 are visible on the base. It is decidedly less conical than Trishoplita 

 conospira Pfr. as defined by von Martens, and has a whorl less. 



EUI.OTA MEKCATORIA AND E. CAL1GINOSA. 



These species were treated as distinct in the Manual of Conchology, 

 Vol. VI, but in dealing with them in the Catalogue of Marine Mol- 

 lusks of Japan issued by Mr. F. Stearns and myself, I seem to have 

 lost sight of the real differences between them, the intergradation I 

 saw being a matter of color and size rather than of the details of form. 



The receipt of a large series of specimens gives opportunity to cor- 

 rect the error I committed of lumping these really distinct species. 



Eulota (Euhadra; mercatoria ('Gray ' Pfr.). 



This species varies in size from 26 to 38 mm. diam., and in color 

 from a pale yellowish-brown to red-chestnut and blackish-chestnut, 

 always with a narrow dark peripheral band bordered with yellowish 

 on each side. In some light forms there is a dark umbilical patch. 

 The pattern therefore varies from that of the E. succincta group to 

 the perryi or herklotsi pattern. The periphery is more or less 

 angular ; the base is evenly rounded, and the lower lip in conse- 

 quence is regularly curved. 



Pfeiffer's figure of his type is excellent (Conchyl. Cab. Helix, pi. 

 132, figs. 1, 2, copied in Man. Conch. VI, pi. 31, f. 26, 27). I have, 

 figured a smaller specimen in Catal. Mar. Moll. Japan, pi. 10, fig. 5 

 (by error said to be 17t? mm. diam. in the text, p. 162). E. merca- 

 toria occurs on Okinawa. 



