110 



several others to which I have given the specific names of 

 livida, nigro-punctata and pyrostoma in the Zool. Proc. for 

 June 1832, might form together a very natural subgenus. 

 Upon carefully reading over the descriptions given by Lesson 

 of six species in the Revue Cuvierienne 1842 we have not 

 been able to recognize them, they are named by him, Col. 

 Clathra, Col. buccinoides, (this is quite different from that 

 named by me Col. buccinoides in Zool. Proc. 1832,) Col. 

 ampla. Col. aphthsegera. Col. pulicaris and Col. digitalis. 

 Of two species which are given by Gluoy, in the Voyage of 

 the Astrolabe, that named lutea is probably a variety of 

 seniiconvexa, and that named rubicundula may be a variety 

 of flavida. 



DESCRIPTIONS. 



1. Col. Strombiformis, Lam. (pi. xxxvi, f. 1, 2.) 



Col. testa ovato-turbinata, subalata, laBviuscula, castanea, 

 strigis albis longitudinalibus breviusculis ornata ; anfractibus 

 6, tribus ultimis postice angulatis, ultimo antice spiraliter 

 striato ; spira exsertiuscula, tertiam partem testae eequante ; 

 apertura longitudinali, angusta, flexuosa, peritremate auran- 

 tiaco ; plicis columellas subobsoletis. 



Shell ovate-topshaped, somewhat triangular, smooth, chest- 

 nut coloured, with short white longitudinal streaks ; volutions 

 6, the three last posteriorly angulated; the last very large, 

 spirally striated anteriorly ; spire prominent, equal in length 

 to a third part of the shell : aperture narrow, flexuous, with 

 an orange coloured border ; columellar folds rather obsolete. 



The last volution is generally longitudinally grooved on the 

 ventral side. Found on the Isle of Muerte, West Columbia, 

 H. Cuming. 



2. Col. major. Sow. (pi. xxxvi, f. 3, 4, 6.) Zool. Pr. ii. 119. 



Col. testa ovata, medio gibbosa, castanea, albido punctulata; 

 spira breviuscula, pyramidali, apice acuto ; anfractibus 6 — 7 

 Isevigatis, ultimo maximo, superne rotundato-turgido, infra 

 spiraliter sulcato ; apertura elongata, flexuosa, alba, superne 

 angulata ; labio externo superne obtuse angulato albo, intus 

 denticulato ; labio columellari superne callifero, infra plicato- 

 rugoso. 



Shell ovate, gibbous in the middle, chestnut coloured, with 



