376 



A very minute white shell with crenulated whorls ; from North 

 America, in Professor Bell's Collection. 



10. Marginella muscaria (pi. lxxv. f. 45, 46, 47.) Lam. 

 Anim. s. vert. vii. p. 359. 



M. angulatim ovata, fulva, vel aurantia ; spira valide producta ; 

 anfractibus subangulatis, ultimo leviter crenulato, prope labrum 

 tumido ; columella alba, expansa, callosa, plicis quatuor obliquis, 

 quarum antica sub-retusa; labio externo albo, postice tumido, 

 subemarginato, antice attenuate, pone rotundato, antice varicem 

 validam formante. 



Tins species is remarkable for a tumidity near the reflected lip 

 on the back of the last whorl, and for the callosity of the colu- 

 mellar lip which is spread over the front. 



From the West Indies. 



11. Marginella formicula (pi. lxxv. f. 41, 42.), Lam. 

 Anim. s. vert. vii. p. 359. 



M. angulata, pallidc fulva; spira, producta; anfractibus angu- 

 latiSj crenulatis ; apertura angusta ; columella subrecta, plicis qua- 

 tuor, quarum antica tenui, obliqua; labio externo valido, postice 

 angulato, emarginato, in medio incurvo, antice attenuato, vahde 

 emarginato, pone valide refiexo, antice ad basin varicis columellari 

 juncto. 



Angular, of a dull brown colour ; with the spire' produced, the 

 whorls angular, crenulated. Of the four folds in the columella 

 the last is thin and oblique. The outer lip is thickened inwards, 

 with a notch or slope near the posterior end. It is strongly re- 

 flected, and at the anterior runs into a strong spiral varix. 



New Holland. 



12. Marginella translucida (pi. lxxv. f. 62, 63.), nobis. 



M. sub-elongata, alba, translucida; spira producta; apertura 

 elongata, columella quadriplicata, labio externo intus in medio 

 incurvo, antice refiexo, extiis valide refiexo, antice varicem validum 

 formante. 



A small, elongated,, white, thin shell, having the outer hp 

 gracefully bent inwards in the centre, and having a varix at the 

 lower part of the last whorl. Australia. 



13. Marginella limbata (pi. lxxiv. f. 18, 19, 20.), Lam. 

 Anim. s. vert. vol. vii. 



M. ovali, subventricosa, laevi, pallide fulva, lineis undulatis 



