NASSA.— Plate III. 



plaited, plaits in the two last whorls fading away, 

 grooved at the base ; reddish-brown or olive, encir- 

 cled by a small faint central zone ; aperture rather 

 narrowly ovate, bluish-white, columella with an ex- 

 panded wrinkled lamina, lip strongly varicose, short- 

 ridged within. 



BiicciiiuM oJioacemn, Bruguiere Diet. No. 38. 

 Nassa oUvacea, Deshayes. 

 Buccinum tcmia, Gmelin. 



Hab. West Indies. 



This well-known species varies a little in colour and ro- 

 bustness of form, but the difference is not material. 



Species 20. (Fig. a, i, c, Mus. Cuming.) 



Nassa coronata. Nass. testa ovatd, snhcentrkosd, dorso 

 IcBtigatd, idtente, alba vel olivaced, vd cutsianed, medio 



zonatd ; spird acuta, prope apiceni plicatd ; anfrndi- 

 bus subrotundatis, supenie tnberculato-nodatk ; aper- 

 tiird subampld, columella arcuatd, callosd, labro sitb- 

 varicoso, marg'me denticulato,fuuce tenuiliratd. 



The coronated Nassa. Shell ovate, subventricose, 

 smooth at the back, shining, white or oUve or chest- 

 nut, zoned in the middle ; spire sharp, plaited near 

 the apex ; whorls somewhat rounded, tubercularly 

 noduled at the upper part ; aperture rather large, 

 columella arched, callous, lip slightly varicose, denti- 

 culated at the edge, interior finely ridged. 



Buccinum corouatmii, Lamarck, Anim. sans vert. (Deshayes' 

 edit.) vol. X. p. 180. 



Nassa coronata, Deshayes. 



Hab. Madagascar. 



In the dark varieties of this species the band is light, 

 and in the light varieties it is dark. 



