NASSA. 



Plate XXVIII. 



Species 184. (Mus. Cuming.) 



N.iSSA BELLULA. Nass. testa ovatd, spird acmninatd, 

 aadd; anfractihus angidatis, palUduld, fascia luteold 

 ornatd, longitudinaliter pUcatd, tratisversim liratd, 

 mierstit'm concinm lon/jitudinaliter striatis ; colu- 

 melld rugosd, callo jnagno expanso tecto, labro margine 

 rugoso calloso, iiitm crenidato. 



The pketty Nassa. Shell ovate, spire acuminated, 

 sharp, with the whorls angled, pale, ornamented with 

 a yellowish band, longitudinally plaited, transversely 

 ridged, interstices neatly cancellately striated; colu- 

 mella rough, with a large expanded callosity, lip with 

 a rough callous edge, crenulated within. 



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



Hob. Catbalonga, Island of Samar, Philippines (under 

 stones at low water) ; Cuming. 



An elaborately sculptured species, callous in front, 

 having somewhat a Mangelia-Yikei aspect. 



Species 185. (Mus. Cuming.) 



Nassa callosa. Nms. testa pand, ovatd, spird acuta, 

 albd, fmco-maculatd, longitudinaliter costatd, traus- 

 versim sulcatd ; columelld antice triplicatd, callo 

 magiio albo nitido expanso, labro margine incrassato, 

 calloso, intus deutato-Urato. 



The callous Nassa. Shell small, ovate, sharp at the 

 spire, white, spotted with brown, longitudinally rib- 

 bed, transversely grooved ; columella three-plaited in 

 front, with a large white shining expanded callosity, 

 lip thickened and callous at the edge, dentately ridged 

 within. 



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



Hab. Bais, Isle of Negros, Philippines (in sandy mud at 

 seven fathoms) ; Cuming. 



A very small species, distinguished by a largely ex- 

 panded shining callosity in front. 



Species 186. (Mus. Cuming.) 



Nassa Nov^-Zelandij3. Nass. testd acuminato-conicd, 

 nigra fiiscoque niarnwratd ; spird acutd, suturd ini- 

 pressd; anfractibus superne subangnlatis, transwrsim 

 lineari-sulcatis, longitudinaliter fortiter grano-costa- 

 tis; columelld coutortd, albd, labro tenui, varicoso. 



March, 



The New Zealand Nassa. Shell acuminately conical, 

 mottled black and brown ; spire sharp, with the su- 

 ture impressed ; whorls slightly angled at the upper 

 part, transversely linearly grooved, longitudinally 

 strongly grain-ribbed; columella twisted, white, lip 

 thin, varicose. 



Hab. New Zealand. 



Of the same typical character as N. labida, from the 

 same locality, but more prominently grained and more an- 

 gulated about the suture. 



Species 187. (Mus. Cuming.) 



Nassa ambigua. Nass. testd acuminato-turritd, fulves- 

 cente, rufo sparsim maculatd; spird acuta, siibexsertd ; 

 anfractibus rotundatis, longitudinaliter prominente cos- 

 tatis, liris ienuibus cingulatis ; columelld tenue corru- 

 gatd ; aperturd parvd, circulari, labro varicoso, albo. 



The doubtful Nassa. Shell acuminately turreted, light 

 fulvous, sparingly blotched with red ; spire sharp, 

 rather exserted ; whorls rounded, longitudinally pro- 

 minently ribbed, encircled with five ridges ; colu- 

 mella finely wrinkled; aperture small, circidar, lip 

 varicose, white. 



Buccinum ambiguum, Montagu, Test. Brit. pi. 9. f. 7. 



Hab. Mediterranean and English Channel. 



A delicate transparent fulvous species, spotted here and 

 there, but chiefly near the suture, with brown-red, promi- 

 nently decussated with longitudinal ribs and cross ridges. 



Species 188. (Mus. Cuming.) 



Nassa SancT;E Helen/E. Nass. testd ovato-conicd, sub- 

 turritd, albidd, rufo-variegatd ; spird productd ; an- 

 fractibus rotundatis, longitudinaliter costatis, costis 

 distanlibua subnodosis, anfractu idtimo antice trans- 

 wrsim, sulcato ; columelld lavi, calloso, antice unipli- 

 catd, labro intus lirato. 



The Saint Helena Nassa. Shell ovately conical, sub- 

 turreted, white, variegated with red ; spire produced ; 

 whorls rounded, longitudinally ribbed, ribs distant, 

 rather nodose, last whorl transversely grooved in 

 front; columella smooth, callous, one-plaited in 

 front, lip ridged within. 



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



1854. 



