Ill 



white dots ; spire rather short, pyramidal, acute ; volutions 



6 — 7? smooth, the last very large, rounded and turgid, spirally 

 grooved anteriorly; aperture elongated, flexuous, white, an- 

 gular posteriorly ; outer lip posteriorly bluntly angular, toothed 

 within ; columellar lip posteriorly calliferous, anteriorly rugose 

 with small plaits: the posterior part of the outer lip is 

 usually white. 



This well known species has commonly been regarded as 

 Col. Strombiformis Lam. It is however easily distinguished 

 from that species. We have represented at f. 6, a small and 

 more slender variety. 



Found under stones on the Shores of South America, 

 H. Cuming. 



3. Col. heemastoma Sow. (pi. xxxvi. f. 5.) Z. P. ii. 

 p. 116. 



Col. testa oblonga, laevigata; apice acuminato ; anfractibus 



7 — 8, castaneis, albo-maculatis, ultimi dorso nigro, infra 

 castaneo ; apertura elongata, flexuosa ; labio externo extus 

 incrassato, superne prominente, albo ; peritremate aurantiaco; 

 labio interno intus denticulato ; columella unituberculata. 



Shell oblong, smooth, apex acuminated ; volutions 7 — 8, 

 chestnut coloured, spotted with white, the back of the last 

 volution black, chestnut in front; aperture elongated, flexuous; 

 outer lip thickened externally, prominent and white poster- 

 iorly; peritreme orange coloured; inner lip toothed within; 

 columella with a single irregular tubercle. 



Found under stones on the Shores at Panama and the 

 Gallapagos Islands, H. Cuming. 



4. Col. castanea Sowb. (pi. xxxvi. f. 7- H«) Z. P. 

 ii. 118. 



Col. testa ovato-oblonga, castanea, pun ctulis albis conspersa; 

 spira breviuscula, acuminata; anfractibus 5, superne anguli- 

 feris, ultimo magno ad basin spiraliter sulcato ; apertura 

 elongata, flexuosa, superne angulosa; peritremate aurantiaco; 

 labio externo intus denticulato, interno superne callifero, medio 

 albo, eroso, infra plicato-rugoso. 



Shell oblong-ovate, chesnut coloured, with white dots ; spire 

 rather short, acuminated ; volutions five, angular posteriorly, 

 the last large and spirally grooved anteriorly ; aperture length- 

 ened flexuous, angular posteriorly; peritreme orange co- 

 loured ; outer Up toothed within, inner with a posterior 

 callus, middle white, eroded, rough with small plaits in front. 



Real Llejos, Central America, H. Cuming. 



