162 CANTHARUS. 



C. UNICOLOR, Angas. PL 74, fig. 279. 



Pale brown or whitish throughout. Length, 12, diam., 4 mill. 



Port Jackson, Australia ; under stones at very low spring tides, 

 C. PETTERDI, Brazier. 



Shell fusiform, thick, longitudinally flatly ribbed and trans- 

 versely ridged, the interstices filled with rows of muricated scales 

 (only seen under the lens), whitish, ornamented with a pure white 

 band in the centre of the whorls , arid a faint brown one below ; 

 , spire moderately elevated, apex blunt; whorls six, almost fiat, 

 suture impressed ; aperture ovate ; canal short, slightly recurved ; 

 columella arched; outer lip crenulated, thickened externally, 

 strongly denticulated within. Length, 12, diam., 4 mill. 



Nortli-East Coast of Tasmania. 



Mr. Brazier has only seen one specimen of this species, which 

 is in the cabinet of Mr. W. F. Petterd. 

 C. UNDOSUS, Linn. PL 74, figs. 280-282. 



Yellowish white, the revolving ridges chestnut- or chocolate- 

 brown ; aperture white, the columella and margin of lip tinted 

 with yellow. Length, 1-25 to 1-5 inches. 



Malacca; Australia; Philippines; Viti and Pauinotus Is. 



Epidermis olive, short pilose. Occasionally the shell has a 

 few large, rounded, longitudinal ribs. 

 C. GEMMATUS, Reeve. PL 74, fig. 283. 



Rusty brown, blotched with white, under an olive epidermis. 

 Revolving ridges broken up into chocolate-colored tubercles upon 

 the longitudinal ribs. Aperture white. 



Length, 1-25 to 1-5 inches. 



Monte Christi, W. Columbia (in clefts of the rocks) ; Mazatlan. 



The interrupted revolving lines, more numerous ribs, higher 

 spire and less distinctly marked shoulder will serve to distinguish 

 this species from G. undosus. 

 C. CANCELLARIA, Conrad. PL 74, figs. 284, 285. 



Fusiform, with longitudinal plicae, and more elevated, distant, 

 undulated, revolving costae, and intermediate fine lines ; whorls 

 longitudinally rugose ; aperture half as long as the shell ; labrum 

 with distant, acute, prominent lines within ; columella distinctly 

 plaited at base ; beak recurved ; color cinereous. 



Length, 20 to 30 mill. 



Ship Island, Gulf of Mexico; Cedar Key, Fla. (Calkins). 



