GIBBULA. 223 



sutures and periphery ; sutures impressed ; last whorl angulate at the 

 periphery, the angle dividing the shell into two equal parts as regards 

 altitude ; base convex, very finely 1 irate, the lirre about 12 in number, 

 unicolored ones alternating with articulated white and deep brown or 

 reddish ones ; aperture large, equalling half the total altitude of 

 shell, subcircular, about as wide as long; outer lip acute, smooth 

 within ; columella arcuate, a little straightened in the middle ; place 

 of the umbilicus impressed and grooved, but imperf orate. 

 Alt. 7, diam. mill. 



Hakodadi, Japan. 



T. yesxoensis SCHHKXCK, Bull, de 1'Acad. Imp. des Sci. de St. 

 Petersb. v, p. 512 ; Moll, des Amur-landes u. des No rd japan. Meeres, 

 p. .",03, t. 15, 11-18. 



An obsoletely lirate, shining species, differing from most others in 

 being imperforate. From (I. tiberiana Crosse the larger size and 

 coloration separate it. 



This species seems to be closely allied to, or identical with T. cal- 

 liclirom Philippi. The figure of Philippi is copied on pi. 61, fig. 25 ; 

 the description is as follows : 



Shell imperforate, acutely conoidal, very smooth ; whorls slightly 

 convex, the last angulate-carinate ; whorls above and below roseous, 

 articulated with red, in the middle olivaceous with spiral lines 

 articulated with green dots ; base olivaceous, encircled by two 

 similar lines, the center rosy; aperture subrhomboidal ; columella 

 terete, scarcely oblique, subangular in the middle. (Phil.) 



A small but extremely beautiful species. The shell is elevated 

 conical, acute, and consists of 7 whorls. These are slightly convex, 

 especially above, and the last (which is 3-7 ths the total alt.) has 

 a keel-like angulation. The upper and lower portions of the upper 

 surface of the whorl are finely obliquely striate, rose-red with large 

 brown spots ; the median part of the upper surface is green, approach- 

 ing olive-color, and is marked by three lines formed of dark green 

 dots. The base is the same color. The center is rose-red, then fol- 

 lows a green girdle with two lines of dark green dots, and the cir- 

 cumference is again rose-red with large brown spots ; the aperture 

 is nearly rhomboidal, white within ; the columella is nearly per- 

 pendicular, cylindrical, blunt-toothed in the middle, outside sur- 

 rounded by an impressed line, which reminds one of an umbilical 

 rimation. Alt. 7&, diam. 6 mill. 



Habitat unknown. 



