SOUTH AFRICAN MARINE MOLLUSKS. 49 



13 ribs occur upon the last and 14 upon the preceding turn. 

 The spiral sculpture consists of 10 irregularly developed, low, broad 

 cords, of which the three on the shoulder are almost obsolete and 

 scarcely discernible; while the four upon the base are fairly strong. 

 In addition to these cords the entire surface is marked by fine more 

 or less regularly developed, punctate, spiral striations. Posterior 

 angle of aperture acute, outer lip provided with nine slender denticles 

 a little within its inner margin ; columella glazed with a moderately 

 strong callus; parietal lamellae only slightly developed. 



The type and two specimens, Cat. No. 187019, U.S.N.M., were 

 collected at Port Alfred (Coll. No. 554). The type has lost the 

 early whorls; the last four remaining measure: Length, 29.2 mm.; 

 diameter, 15 mm. 



COMINELLA CAPENSIS Dunker. 



Cat. No. 184, U.S.N.M., three specimens collected by William 

 Stimpson on the North Pacific Exploring Expedition at Simons Bay. 



COMINELLA UNIFASCIATA Sowerby. 



Cat. No. 186748, U.S.N.M., four specimens from Port Alfred (Coll. 

 No. 107). 



COMINELLA PUNCTURATA Sowerby. 



Cat. No. 19375, U.S.N.M., three specimens from Cape of Good 

 Hope. Cat. No. 43074, U.S.N.M., two more from the same locality. 

 Cat. No. 186749, U.S.N.M., five from Port Alfred (Coll. No. 108). 

 Cat. No. 127769, U.S.N. M., six specimens from the same locality 

 (Coll. No. 864). Cat. No. 227770, U.S.N.M., six specimens from the 

 same source (Coll. No. 865). 



COMINELLA ANGUSTA Sowerby. 



Cat. No. 186751, U.S.N.M., two from Port Alfred (Coll. No. 110). 



COMINELLA, species? 



Cat. No. 16992, U.S.N.M., four specimens too poor to be specifi- 

 cally determined from the Cape of Good Hope. 



COMINELLA, species ? 



Cat. No. 18807, U.S.N.M., three specimens from Port Elizabeth 

 which are too poor to be specifically determined. 



COMINELLA, species? 



Cat. No. 187021, U.S.N.M., two specimens from Port Alfred, too 

 poor to permit of specific determination. Cat. No. 249745, U.S.N.M., 

 contains three specimens from the same source (Coll. No. 1017). 



GenusTRITONIDEA Swainson. 

 TRITONIDEA INSCULPTA Sowerby. 



Cat. No. 186752, U.S.N.M., three specimens from Port Alfred 

 (Coll. No. 111). 



