NASSA. 



Plate XXI. 



Species 138. (Mus. Cuming.) 



Nassa FissiLABRis. Ndss. tedd ovato-conicd, oUiqiid, 

 cinerasceiile, paUide fmciatd, loncjitudinaUter co/statd ; 

 anfractu ultimo antici transversim sulcata ; columdld 

 callo expanso, autice tuberculin duobus transversis, lahro 

 incrussato, superiie incino. 



The slit-lip Nassa. Shell ovately conicnl, obliiiue, ash, 

 faintly banded, longitudinally ribbed; last whorl trans- 

 versely grooved in front ; columella with an expanded 

 callosity, with two transverse tubercles in front, lip 

 thickened, slit at the upper part. 



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



Hab. Island of Mindanao, Philippines (in sandy mud at 

 twenty-five fathoms) ; Cuming. 



A rather solid species, with a characteristic Pleurotoma- 

 like slit in the lip. 



Species 139. (Mus. Cuming.) 



Nassa glauca. Nass. testa ovato-conicd, ventricosd, 

 fflaucd, fascia alba supra suturam ; spird acutd, suturd 

 impressd; anfractibus longitudinaliter costatis, costis 

 distantibus, transversim ienuistriatis ; columella basi 

 contortd et peculiariter sulcatd, aperturd parvd, labro 

 fortiter varicose. 



The glaucous Nassa. Shell ovately conical, ventricose, 

 glaucous, with a whitish band above the suture ; spire 

 sharp, suture impressed ; whorls longitudinally ribbed, 

 ribs distant, transversely finely striated ; columella 

 twisted and peculiarly grooved at the base, aperture 

 small, lip strongly varicose. 



C. B. Adams, Shells of Panama, p. Gl. 



Hub. Taboga, Panama. 



A strongly marked species, chiefly distinguished for its 

 sutural and basal grooves. 



Species 140. (Mus. Cuming.) 



Nassa micans. Na^s. testa ovato-fusiformi, fimieo-albd, 

 nitidissimd ; anfractibus convexiusculis, prope apicem 

 costellatis ; columelld callo teiiuissimo, labro basi cre- 

 nulato,fattce liratd. 



The glittering Nassa. Shell ovately fusiform, smoky 

 white, very shining; whorls rather convex, ribbed 

 near the apex ; columella with a very thin callosity, 

 lip crenulated at the base, interior ridged. 



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

 Hab. Island of Mindanao, Philippines (in sandy mud at 

 twenty-five fathoms) ; Cuming. 



A fusiform species, with a shining semifossil aspect. 



Species 141. (Mus. Cuming.) 



Nassa doksuosa. Nass. testd ovatd, depressd, dursu coii- 

 spicue ffibboso-tuberculatd, olioaced, Icevi, prope apiceiii 

 longitudinaliter subplicatd ; aperturd parvd, columelld 

 callo peramplo usque ad apicem repando labro crassi 

 juiicto. 



The humped-back Nassa. Shell ovate, depressed, con- 

 spicuously gibbously tuberculated at the back, olive, 

 smooth, longitudinally subplicated at the apex ; aper- 

 ture small, columella with a very large callosity spread 

 to the apex and joining thickly with the lip. 



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



Hab. Island of !Masbate, Philippines (on mud-banks at 

 low water) ; Cuming. 



Remarkably distinguished for its tuberculated hump and 

 thickly spread callosity. 



Species 143. (Mas. Cuming.) 



Nassa costata. Nass. testd ovato-conicd ; spird acutd, 

 productd, pallidd, anfractu ultimo maculd rufo-fuscd 

 tincto ; anfractibus convexiusculis, longitudinaliter cos- 

 tatis, costis superne plano-?iodatis ; columelld brevila- 

 minatd, labro simplici, basi crenulato, fauce liratd. 



The bibbed Nassa. Shell ovately conical ; spire sharp, 

 produced, pale, last whorl stained with a red-brown 

 spot ; whorls rather convex, longitudinally ribbed, 

 ribs flatly nodided at the upper part ; columella 

 short-laminated, lip simple, crenulated at the base, 

 interior ridged. 



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



Hah. Island of Burias, Philippines (in sandy mud at six 

 fathoms) ; Cuming. 



The ribs are close-set and rather flexuous, the spire sharp 

 and erect. 



Species 143. (Mus. Cuming.) 

 Nassa Stimpsoniana. Nass. testd acumiaato-conicd, 

 December, 1853. 



