COLUMBELLA. 10 1 



the contrary, a rather small form, thin, but with rugose growth- 

 lines decussating the surface a not unusual variety. Other 

 synonyms are C. zulmis, Duclos (fig. 33), G. affinis, Risso, G. 

 incubitantes, Martini, G. Gualteriana, Risso? 



C. DYSONI, Reeve. PL 44, fig. 57. 



Shell fusiformly conical, yellowish white, painted with waved 

 stripes of red-brown spots, spire short, sharp, whorls strongly 

 spirally grooved throughout; aperture elongated, lip flatly 

 thickened, denticulated within. Length, 16 mill. 



Honduras (Dyson). 



I think this will prove to be a G. mercatoria, of somewhat 

 unusual form and not adult. 



C. RUSTICA, Linn. PI. 43, tigs. 34-49; PL 44, figs. 50-56. 



Shell variable in shape, sometimes short, with broad body- 

 whorl, sometimes narrower, with spire and lower part of body- 

 whorl produced; smooth, or slightly spirally striated ; white to 

 orange-color, stained with chestnut or chocolate, forming spots, 

 longitudinal zigzags :md blotches, frequently light banded and 

 fasciculated with chestnut next below the -suture; lip white, 

 yellowish or flesh-color, the interstices of the dent iculat ions 

 chocolate-color. Length, '5-1 '1 inches. 



West Indies, West Africa, Gape Verd Is., Southern Europe, 



Mediterranean Sea. 



One of the most variable of shells. The shorter, broad forms 

 are often very close in shape and coloring to G. mercatoria, but 

 are always distinguishable by the smooth surface, and the dark 

 interstices of the lip-teeth. 



The synonymy is enormous, including: G. sponyiarum, Duclos 

 (fig. 39) ; C. Azoricctj Drouet (fig. 40) ; G. aureola, Duclos (fig. 

 41) and G. tumida, Reeve, not Duclos (fig. 42); G. striata, 

 Duclos (figs. 43, 44) ; G. cornea, Kiener (fig. 45) ; G. luteola, Kiener 

 (fig. 46); G.fustigata, Kiener (fig. 47); C. modesta, Kiener (fig. 

 48); G. ambigua, Kiener (fig. 49); C. vestalia, Duclos (fig. 50); 

 C. simpronia, Duclos (fig. 51); G. nucleus, Kiener (fig. 52); 

 G. rasolia, Duclos ? (fig. 53) ; besides a number of unfigured 

 species, including probably G. Adansoni and C. rufa, Menke, 

 from the Cape Verd Islands. C. reticulata, Lam. (fig. 54), said 

 to come from Brazil, has some characters in common with G. 



