36 ZOOLOGY OF THE VOYAGE OF THE SULPHUE. 



absence of the enlarged series of tubercles beneath the suture, the angles of the 

 decussating lines not being distinctly tubercular, outer lip toothed, and the inner 

 produced forwards with a sharp margin. 



150. Nassa perpinguis, (Plate IX, fig. 12, 13). Testa elongate ovata, acuminata, lutescente, 

 tenui ; anfractibus senis rotundatis, ventricosis, cancellatis, concoloribus vel pallide fasciatis, ultimo 

 parviusculo ; columella vix callosa. 



Inhab. Bay of Magdalena, California. 



The last whorl is comparatively small and contracted, and as the two suc- 

 ceeding are rounded, it gives the shell a very obese appearance; the outer lip has 

 a slight sinus, and a viteous callus is sparingly deposited over the columella. 



151. Nassa myristicata, (Plate IX, fig. 10, 11). Testa ovzik, acuminata, solida, sordida; 

 anfractibus octonis rotundatis, costis rotundis obliquis longitrorsum indutis, spiras per series 

 adscendentibus, lineis salientibus rufis transversim decussatis ; apertura parviuscula; labio interno 

 antice producto. 



Inhab. Cape of Good Hope. 



The characters here are bold and distinguishing; full rounded ribs are tra- 

 versed by elevated reddish brown lines ; those of the spire are continuous, the 

 aperture is small, and the columella has a thin produced lamina. The whole 

 shell is solid and ponderous. 



152. Nassa nodata, (Plate IX, fig. 14, 15). Testa ovata, elongata, pallida; anfractibus 

 septenis rotundatis, longitrorsum costatis, lineis salientibus decussatis, supra costas tuberculosas 

 albidis, ultimo nigro bifasciato; labro integro acuto ; labio interno producto ; apertura parviuscula. 



Inhab. Straits of Malacca ; from seventeen fathoms, in the mud. 



153. Nassa mcesta, (Plate IX, fig. 18, 19). Testa parva, ovata, acuminata, nigricante; 

 anfractibus senis subplanulatis superne paulisper coarctatis, longitrorsum plico-costatis, lineis 

 decussatis granulosis, infra suturam lutescentibus ; columella callosa; apertura nigra. 



Inhab. Gulf of Papagayo, west coast of Central America; in from eight to 

 fourteen fathoms, among mud. 



154. Nassa gaudiosa, (Plate IX, fig. 16, 17.) Testa ovata, elongata, acuminata, polita, fusca 

 vel rufescente, albo articulate; fasciata; anfractibus subrotundatis, superne plicatis, lineis rufis 

 transversis instructis; labro integro : columella nuda, lasvi. 



Inhab. Straits of Malacca. 



Shell ovate, elongated, and polished ; whorls, beneath the suture plicated, 

 adorned with equidistant red lines, mottled with dark and white, which often 

 assume an articulated fasciated character; columella not in the least callous, and 

 quite smooth. 



