118 



outer lip denticulated near the base ; columella with three 

 small teeth. 



A very pretty species, exceedingly variable in its colouring. 

 Found in the Gallapagos Islands, H. Cuming. Numerous 

 specimens were brought by the Endeavour, Capt. Cook. 



20. Col. ptecila nob. (pi. xxxvii. f. 51, 52.) 



Col. testa ovata, utrinquesubacuminata, transversim striata, 

 fulva, lineis 2 — 3 transversis castaneis, maculisque albis varie- 

 gata ; anfractibus 5 — 6, postice subcoronatis, ultimo magno, 

 subtrigonali ; apertura latiuscula, flexuosa, labii externi medio 

 subcoarctato. 



Shell ovate, slightly acuminated at either end, transversely 

 striated, fulvous, with 2 or 3 transverse chesnut lines and 

 varied with white spots ; volutions 5 — 6, posteriorly subcoro- 

 nated, the last large, somewhat triangular; aperture rather 

 broad, flexuous ; middle of the outer lip slightly contracted. 



Two specimens only were brought from Matnog, by 

 H. Cuming. 



21. Col. bidentata Menke. (pi. xxxvii. f. 53, 54.) 



Col. testa, oblonga, kevigata, pallescente, strigis maculisque 

 castaneis undatis punctisve albis ornata ; spiree apice nigri- 

 cante ; anfractibus 6, postice subnodulosis, ultimo magno, 

 antice transversim striato ; apertura latiuscula, labio externo 

 extus striato, interno denticulis externis 8 — 9, internis 2 — 3 ; 

 canali latiusculo. 



Shell oblong, smooth, pale ornamented with chesnut spots, 

 and wavy streaks and white dots ; apex of the spire blackish ; 

 volutions six, slightly nodular posteriorly, the last large, 

 transversely striated in front ; aperture rather broad ; outer 

 lip striated externally ; inner lip with 8 or 9 small teeth on 

 the outer edge, and 2 or 3 on the inner edge, and a pale vio- 

 laceous spot in the middle ; canal rather broad. 



A very graceful species, brought lately from the Swan River. 



22. Col. flavida Lam. (pi. xxxvii, f. 55, 56, 57-) Buc. 

 flavurn Brug. 



Col. testa oblonga, lsevi, aurantiaca, albo-maculata et punc- 

 tata, ; spira producta, sub-mucronata, anfractibus 7 — 8, sub- 

 cylindraceis, postice prope suturam maculis albis ornata, 

 ultimo antice transversim sulcato, medio punctulis albis 

 adsperso ; sutura valida ; apertura longitudinali, breviuscula, 

 intus rosea vel purpurea, flexuosa, labio externo varice crasso 

 instructo, extus costellis transversis medianis, margineflexuoso 

 tenuiusculo, acutiusculo intus denticulato ; labio interno la- 



