NASSA.— Plate XII. 



]lah. New York. 



Of a very distinct typical form, resembling Achatinella. 



Species 80. (Mus. Cumiug.) 



Nassa succincta. Nass. testa acmrdnato-turritd, lavi, 

 cinerascente,fasciis duabus rufescmtibus cinctd; m^frac- 

 tibus planulatis, supremis costellatis; sutiird subcanali- 

 r.ulatd ; colmiwlld subincrassatd, labro postice infiexo, 

 antice valde sinuato et dentato, crasse varicoso, faitce 



The belted Nassa. Shell acuminately turreted, smooth, 

 light ash, encircled with two reddish bands ; whorls 

 flattened, the uppermost finely ribbed ; suture slightly 

 channelled ; columella rather thickened, lip posteriorly 

 reflected, anteriorly very much sinuated and toothed, 

 interior ridged. 



A. Adams, Pro. Zool. Soc. March 1851. 



Hnb. Island of Masbate, Philippines ; Cuming. 



A smooth flat-whorled aciculated species, encircled with 

 red-brown bands upon a yellowish ground. 



Species 81. (Mus. Cuming.) 



Nassa vibex. Nass. testa ovatd, crassimculd, cinered, 

 zonulis fuscis et caruleis cingulatd ; anfractibus su- 

 perne angtilatis, longitudinaUter plicatis, plicis liris 

 muricato-nodosii decussatis ; aperturd pariiiusculd, co- 

 lumella subexcavatd, labro simplici. 



The black and blue Nassa. Shell ovate, rather thick, 

 ash, encircled with brown and blue zones ; whorls 

 angled round the upper part, longitudinally plaited; 

 plates decussated with prickly nodose ridges ; aper- 

 ture rather small, columella slightly excavated, lip 

 simple. 



Say, American Conchology, pi. 57. 



Hab. Island of Masbate, Philippines ; Cuming. 



A prickly Ricinula-]ike species, allied to N. Gruneri. 



