NASSA.— Plate X. 



^Bttccmum Thersites, Bruguiere, Encyclopedic Methodique, 

 pi. 394. f. 8. 



Ncma Thersites, Lamarck. 

 Hab. Pbilippine Islands ; Cuming. 



A more stoutly gibbous species than the preceding, with 

 a more sliarply acuminated spire. The callosity is tinged 

 with yeUow. 



Species 66. (Mus. Cuming.) 



Nassa callospiea. N(m. testa ovatd, palUdd, fascia ci- 

 nered amjulatu ; spird acutd, trattsversiiii liratd, pUcis 

 nodosis ImujituduMlibus instructd ; luhh) cum callo 

 nmyiio albo extenso tecto, margiiiihiis usque ad spiram 

 decurrentibus ; colmuelld antici biplicatd ; labro crasso, 

 calloso, mai-ginato,fauce valde lirato. 



The callous-spire Nassa. Shell ovate, pale, encircled 

 with an ash band ; spii-e sharp, transversely ridged, 

 furnished with nodose longitudinal plaits ; lip covered 

 with a large white callosity, the edge of which reaches 

 the spire; columella biplicate; lip thick, callous, 

 edged, much ridged within. 



A. Adams, Pro. Zool. Soc. 18.51. 



Hab. Island of Burias, Philippines (in coral sand at sL-i 

 fathoms) ; Cuming. 



A solid gibbous tuberculately species, finely reticulately 

 sculptured, with a wide-spread orbicular callosity. 



Species 67. (Mus. Cuming.) 



Nassa crassa. Nass. testa ovatd, crassd, solidd, aitddd 

 aut fluvesceute, interdum caruleo-fnsco fasciatd ; spird 

 bred ; anfractibus superne concavo-declivibus, lomjitu- 

 diuaUter gramtloso-plicatis, pticis subdistaiitibus, plus 

 mitms evanidis ; aperturd parvd, columelld labruque 

 valde callosis, callositate non e.vpansd, fauce liratd. 



The thick Nassa. Shell ovate, thick, soHd, whitish or 

 yellowish, sometimes banded with blue-brown ; spire 

 short ; whorls coneavely slanting round the upper 

 part, longitudinally granulously plaited, plaits rather 

 distant, more or less fading ; aperture small, lip and 

 columella very callous, callosity not spread, interior 

 ridged. 



Bucciimm crassum, Koch, Philippi Abbild. und Besch. 

 Conch, pi. 1. f. 4. p. 43. 



Hab. China ; Largilliert. 



A solid species, in which the lip and columella are veiy 

 callous at the junction on the body-whorl, but the callosity 

 is not spread. 



