164 CYPR^EA. 



Genus CYPR^EA, Linn. 

 Section I. Shell cylindrical or nearly so. 



Group A. Not margined. 

 * Spotted, teeth brown-tinted. 



C. ARGUS, Linn. PI. 1, figs. 1, 2. 



Pale brown, back three-banded, covered with numerous brown 

 rings, base ornamented with four large dark chestnut spots, two 

 on each side of the aperture. Length, 2'5-4 inches. 



Indian Ocean, New Caledonia, New Hebrides. 



C. CER\US, Linn. PI. 2, figs. 11, 12. 



Shell more or less inflated ; brown, ornamented with numerous 

 somewhat small white spots, base usually dark brown. 



Length, 2-6 inches. 



Panama. 



Reported from the West Indies as well as the west coast of 

 America, by several authors, but the true locality seems still 

 in doubt. Prof. Miirch, while including it in his West Indian 

 Cyprseas, says he has seen no specimen with authentic locality. 



The young cervus is transverse^ radiated with four bluish 

 lead-colored bands. 



C. EXANTHEMA, Linn. PI. 1, figs. 3, 4, 5 ; PI. 2, figs. 13, 14. 



Differs from the preceding in being less inflated, more elongate 

 and solid. It is of heavier growth, the spots are usually larger 

 and are ringed. Length, 3-4 inches. 



West Indies, Florida; Panama to Mazatlan (var. cervinetta}. 



One specimen of this shell was found at Fort Macon,N. Caro- 

 lina. Previous monographers have generally given this species 

 an East Indian habitat; it is decidedly West Indian, while C. 

 cervus probably belongs to the West Coast of America. This 

 view coincides with that of Prof. Morch. 



C. cervinetta, Kiener (figs. 3, 13, 14) is a small variety, more 

 cylindrical and of a deeper hue, the teeth on the coluinella are 

 also of a richer dark brown. It belongs to the Panama and 

 Mazatlan regions, and appears to be the West Coast representa- 

 tive of C. exanthema. 



