164 CANTHARUS. 



I am not acquainted with this species. It was described as a 

 Murex, but the want of varices and of an internally thickened 

 lip-margin determines me to place it here. 



C. TISSOTI, Petit. PL 74, figs. 291, 292. 



A very doubtful species, described as a Purpura, from Bom- 

 bay ; I find no record of its identification by Indian conchologists, 

 however. The two figures at first sight appear to represent dif- 

 ferent species, one of them resembling a young Eicinula ; but I 

 have before me West Indian specimens referred to the species 

 by Robert Swift, which are intermediate in character between the 

 two. Is it a variety of G. Goromandelianus ? 



C. SANGUINOLENTUS, Duclos. PI. 74, figs. 293-295. 



Variegated with clouds of chocolate, chestnut and yellowish, 

 under a thin olive epidermis ; aperture white within ; margin of 

 lip and columella blood-red, the latter covered with white 

 tubercles. Length, 1 inch. 



Panama (under stones at low water) to Mazatlan. 



G. haemastoma, Gray (fig. 294), and C. Janelii, Yal. (fig. 295), 

 are synonyms. 

 C. ELEGANS, Gray. PI. 74, figs. 29G, 297. 



Chestnut-brown, variegated with white, especially on the no- 

 dules. Epidermis short, fibrous, olive-brown. 



Length, 1'75 to 2 inches. 



St. JElena, W. Columbia (in clefts of rocks at low water) ; 



Panama ; Mazatlan. 



This species is more generally known as G. insiynis, Reeve 

 (fig. 297), but Gray's name and figure were published twelve 

 years earlier. 



C. INCA, d'Orb. PL 74, fig. 301. 



Greenish brown ; reddish brown within the aperture. 



Length, 20 mill. 



Callao, Peru; at 8 or 10 metres. 



The figure is a copy of that given by d'Orbigny and is nearly 

 one-half larger than the dimensions given in his text (and above) : 

 it is probably inaccurately drawn as it represents an internally 

 thickened and dentate lip margin, whilst the description only 

 mentions a sulcated lip. Is it possibty identical with the last 

 species ? 



