238 GIBBULA. 



needle through it. The sculpture consists of numerous elevated 

 transverse lines. On one specimen there are 11 on the penultimate 

 whorl, rather strongly elevated, scarcely half as wide as their inter- 

 stices ; on a second there are about 30 much weaker ones ; on both 

 the base is more densely striate than the upper surface. The apertnre 

 is rounded, slightly quadrangular ; the outer lip is simple ; the 

 columella oblique, arcuate, passing into the outer lip, and is strongly 

 incurved above, as in the related species. The color is blackish- 

 gray unicolored in the thickly striate specimen ; the other (here 

 illustrated) has obliquely longitudinal coalesing dashes on a clear 

 ground. This coloration affects only a very thin layer, beneath 

 which lies a beautiful nacre, with play of golden and green tints. 

 Alt. 16, diani. 18 mill. (PhUippi.) 



Okhotsk Sea. 



T. ochotensis (Middendorf «i litt.) Philippi, Conchyl. Cab., p. 222, 

 t. 34, f. 1. 



I do not know the generic position of this species. 



G. zoNATA Wood. PL 36, fig. 21 ; pi. 64, fig. 38. 



Shell imperforate but excavated at the place of the umbilicus, 

 depressed-conical, rather solid, whitish, with numerous spiral bauds 

 and lines of purplish-brown ; surface very lightly obliquely striate, 

 closely, densely finely spirally striate, generally with three strong 

 carinje, one at periphery, the others above ; whorls about 5, convex, 

 those of the upper surface bicarinate ; last whorl convex, carinate 

 or subcarinate ; aperture rounded-quadrangular, oblique, nacreous 

 inside with slight sulci at the positions of the external carina ; col- 

 umella a little straightened. Alt. 7, diam. 8 mill. 



Cape of Good Hope. 



Tr. zonatus Wood, Index Test, suppl. t. 5, f. 34.- — Krauss, Die 

 Siidaf. Moll., p. 97.— Philippi, Conchyl. Cab. p. 287, t. 42, f. 8.— 

 Von Martens, Jahrb. d. Mai. Gesellsch. 1874, p. 129, 142.— 

 Watson, Challenger Gasterop. p. 76. — T. cingulatus Muhlf., Mag. 

 d. Gesellsch. Naturf. Freunde, Berlin, viii, 1818, pi. 2, f. 11, (not 

 cingulatus Brocchi). — T. menkeunus Phil. Abbild. u. Beschr. i, p. 

 91, t. 21, f. 6 ; ii, p. 39. — T. cingulatus (again) Menke, Syn. Meth., 

 p. 00, 143. — T. leaeiisis Watson, Journ. Linn. Soc. Lond., xv, p. 90. 

 — " Cymatia cingulata " Muhlf. in coll. (Specimens sent to I. Lea, 

 1835, now in A. N. S. P. coll.) 



