CERITHIUM. 145 



C. ABBREVIATUM (N. Guinea), C. BICANALIFERUM and C. MINIMUM 



(N. Australia), of Brazier. 



C. GRACILENTUM and C. LAcraiosuM, Mighels. Sandwich Is. 



C. VARIEGATUM, Folin. Panama. 



C. CANCELLATUM, H. C, Lea. (Minute, perhaps not a Cerithium). 



Delaware Say. 



C. PROTEXTUM, Conrad. = Terebra. 



C. GIGANTEUM, Lam. (Not Australian, but) Fossil. Paris basin. 

 C. DISLOCATUM, Say. = Terebra. 



Subgenus VERTAGUS, Klein., 1753. 



C. MACULOSUM, Martyn. PL 27, fig. 35. 



White, marbled and longitudinally interruptedly marked with 

 chestnut; earlier whorls longitudinally distantly ribbed, all the 

 whorls with incised lines marking off alternately wider and narrower 

 spiral interspaces, which, at the base, become rounded, rugose ribs. 



Length, 5 in. 



Gallapagos Is. 



C. marmoratum, Quoy, C. marmoreum, Kiener, C. magnum, Jay, 

 and C. clava, Brug., are synonyms. 



C. SOWERBYI, Kiener. PI. 27, figs. 36, 37. 



Upper whorls irregularly ribbed and spirally striate, lower ones 

 smooth, with a faint or obsolete shoulder of tubercles on each whorl ; 

 yellowish white with quadrangular chestnut spots in spiral series, 

 overlaid by irregular chocolate blotches. Length, 3'5 in. 



Philippines; N. Australia. 



The pattern of coloring varies to yellowish white, with close 

 irregular longitudinal chocolate blotches, and no rows of spots, they 

 coalescing into the blotches ; in this state,it is C. Cumingii, A. Ad. 

 (fig. 37). It is C. clava of Sowerby's "Genera." 



C. ALUCO, Linn. PI. 27, fig. 38. 



Whorls slightly angled and distantly nodose-spinose below the 

 suture, upper whorls spirally ridged and cancellated, lower ones 

 with an occasional, low spiral rib, otherwise smooth ; white, thickly 

 speckled, blotched and strigated with chestnut or chocolate. 

 Length, 2*5-3 in. 



Philippines ; Viti Isles. 

 Murex coronatus, Born, is a synonym. 

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