AMPHISSA. 197 



obscured by the epidermis. This is possibly a not fully grown 

 variety of C. Harpiformis. 



C. CITHARA, Reeve. PL 63, fig. 65. 



Shell somewhat squarely ovate, rather solid, whitish, reticu- 

 lated with chestnut, blackish and white-blotched next the sutures, 

 spire rather short, whorls plicately ridged around the upper part, 

 spirally grooved below ; aperture narrow, lip angularly produced 

 and notched at the upper part, finely denticulated within. 



Length, 11 mill. 



Habitat unknown. 



AMPHISSA, II. and A. Adams. 



Shell bucciuiibrm, longitudinally ribbed; spire elevated; aper- 

 ture rather wide, enlarging below, and terminating in a wide 

 anterior sinus ; inner lip callous, plicate below ; outer lip not 

 thickened on the margin, plicate within. Operculum resembling 

 that of Buccinum with the addition of a straight spur of callus 

 extended towards the centre. Dentition columbelloid. 



A. CORRUGATA, Reeve. PL 63, fig. 66. 



Shell yellowish brown, sometimes obscurely spotted and 

 variegated, white within the aperture. Length, 1 inch. 



Monterey, CaL, to Sitka. 

 A. VERSICOLOR, Dall. PL 63, fig. 67. 



Shell much smaller than A. corrugata, with about half the 

 number of longitudinal ribs and revolving striae, namely : from 

 14 to 17 ; colors very variable, pink, salmon, livid bluish purple, 

 brown and pure white, all plain or variously marked with a net- 

 work of white and brown lines, patches, dots, etc. 



Length, 12 mill. 



Monterey to San Francisco, Cal. 



Mr. R. E. C. Stearns has described a var. lineata. 



ADDENDA. 



MARGINELLIDJE. 



Mr. R. E. C. Stearns gives me the following additional 

 localities : 



ERATO MAUGERI^E, Gray. Egmont Key, Tampa Bay , W. Coast 

 of Florida. 



