136 



and with a slight canal posteriorly; outer lip thickened, 

 peritreme white, somewhat reflected, smooth within ; columella 

 arched. 



There is a variety of a pale colour. Bay of Montigo and 

 St. Elena, Central America, H. Cuming. 



74. Col. elegans, Soiv., Z. P., Part ii. p. 114, (pi. xxxix. 

 f. 139.) 



Col. testa elongato-subulata, alba fusco-varia et reticulata, 

 epidermide tenui fulva induta ; anfractibus 11 — 12, primis 

 laevibus, cseteris longitudinaliter costatis, ultimo infra spira- 

 liter sulcato ; labio externo incrassato ; peritremate sub-re- 

 flexo, superne intus emarginato, demum dentibus nonnullis 

 internis ; labio interno lamellari ; canali incrassato. 



Shell elongated subulate, whitish varied and reticulated 

 with fuscous and covered with a thin fulvous epidermis ; 

 volutions 11 — 12, the first smooth, the rest longitudinally 

 ribbed, the last transversely grooved anteriorly ; outer lip 

 thickened, peritreme slightly reflected, posteriorly emargi- 

 nated within, then with a few internal teeth ; inner lip lamel- 

 lar; canal thickened. 



Found in sandy mud at Guacomayo, in Central America, 

 H. Cuming. 



75. Col. dorsata. Sow. Z. P. ii. 120. (pi. xxxix. f. 140, 141 .) 



Col. testa oblongo-pyramidali, alba, lineis irregularibus, 

 flexuosis, confertis, castaneis obtecta ; anfractibus 8, laevibus, 

 superne turgidulis ; ultimi lateribus inflatis dorso prominente ; 

 sutura distincta ; apertura angusta, flexuosa, alba ; peritre- 

 mate extus incrassato ; labio columellari exarato. 



Shell oblong, pyramidal, white, covered with close set irre- 

 gular, flexuous, chestnut lines ; volutions 8, smooth, some- 

 what turgid posteriorly, with the sides of the last inflated, and 

 prominent on the back; suture distinct; aperture narrow, 

 flexuous, white, peritreme outwardly thickened ; columellar 

 lip eroded. 



Distinguished from Col. gibberula, by its larger size, 

 and by the middle of the columellar lip being worn away. 

 Island of Muerte, Bay of Guyaquil, H. Cuming. 



76. Col. gibberula Sow. Z. P. ii, 115. (pi. xxxix. f. 142, 143.) 



Col. testa ovato-pyramidali ; spira subulata ; anfractibus 

 8 — 9, pallidis, brunneo-nubeculatis ; ultimi dorso superne 

 gibberulo, ad utrumque latus varicoso; apertura breviuscula ; 

 peritremate incrassato, expanso, intus denticuUs nonnullis ; 



