156 BULLETIN 91, UNITED STATES NATIONAL MUSEUM. 



by six, narrow, flattened, spiral bands and between these and the 

 umbilical chink by seven additional bands of about double the width 

 of the former. Umbilicus covered with a white callus. Aperture 

 subcircular, very oblique; outer lip thin at the edge, thick within; 

 columella strong and decidedly curved; parietal wall covered by a 

 moderately thick callus. 



Gould's cotypes, Cat. No. 2047, U.S.N .M., two specimens, were col- 

 lected by William Stimpson on the North Pacific Exploring Expedition 

 at the Cape of Good Hope. The largest of these two specimens has 

 two and one-eighth postnuclear whorls, and measures: Altitude, 5.6 

 mm.; greater diameter, 7.3 mm.; lesser diameter, 6 mm. Cat. No. 

 186876, U.S.N .M., contains three specimens from Port Alfred (Coll. 

 No. 246). 



GIBBULA CICER Menke. 

 Plate 30, figs. 8, 9, 10. 

 Cat. No. 144, U.S.N.M., Gould's cotypes, eleven specimens of 

 Gibbula musiva, a synonym of the above species, one of which is 

 figured. Cat. No. 150, U.S.N.M., seven specimens collected by 

 William Stimpson on the North Pacific Exploring Expedition 

 at Simons Bay. Cat. No. 222, U.S.N .M., three specimens collected 

 by the same at False Bay. Cat. No. 43098, U.S.N .M., eight specimens 

 from the Cape of Good Hope. Cat. No. 43122&, U.S.N .M., one speci- 

 men from the Cape of Good Hope. Cat. No. 98260, U.S.N .M., two 

 specimens from Cape of Good Hope. Cat. No. 186877, U.S.N .M., three 

 specimens fromPort Alfred (Coll. No. 247). Cat. No. 250499, U.S.N .M., 

 contains another specimen from the same locality (Coll. No. 1372). 

 Cat. No. 272127, U.S.N.M., an additional specimen from Natal. 



GIBBULA GAUDIOSA Gould. 

 Plate 28, figs. 1, 2, 3. 

 Gibbula gaudiosa Gould, Proc. Bost. Soc. Nat. Hist., vol. 8, p. 21, 1861. 

 Shell helicoid, moderately elevated, red, with four regularly spaced 

 triangular sectors of greenish yellow, on the last turn and one on the 

 whorl preceding this. The cords of the early turns are of the most 

 intense red, equaling the base in the brilliancy of this color. Nuclear 

 whorls, one and one-half, white. Postnuclear whorls well rounded, 

 the first and second marked by four equal, and equally spaced, 

 strong, spiral keels. On the third, a fine, intercalated thread oc- 

 curs between the strong cords, while on the last turn the number of 

 fine spiral threads between the strong cords is doubled. In addi- 

 tion to the above sculpture, the spire is marked by rather strong, 

 closely spaced, retractive incremental lines. Sutures strongly im- 

 pressed. Periphery of the last whorl rendered strongly angulated by 

 the fourth strong spiral cord. Base short, well rounded, marked by 

 15 almost equal and equally spaced, well-rounded, spiral cords. Aper- 



