30 ZOOLOGICAL COLLECTIONS MADE DURING [Jan. 4, 



lower extremity. Sulci narrow, rather deep, cutting through the 

 costae, not nearly as broad as the interstices, 4 to 5 in number on 

 the upper whorls, and about 18 on the last, whereof those around 

 the extremity are finest and closest together. Aperture elongate- 

 ovate, produced beneath into a short, oblique, recurved canal, and 

 equalling about two fifths of the whole length of the shell. Labrum 

 simple, thickened exteriorly by the last rib. Columella covered with 

 a thin, smooth, whitish callosity, arcuate at the middle. Length 9 

 millims., diam. 3^, aperture nearly 4 long and I f broad. 



Hub. Stations 5 and 7- 



There are but tvro examples of this little species, one not quite 

 mature, and the other at some time inhabited by a Paguroid crusta- 

 cean. The latter circumstance may to some extent have caused the 

 absorption of any lirse or denticules within the labrum, if such ever 

 existed. The first sulcus beneath the suture cuts off the tops of the 

 costae, which consequently present the appearance of squarish nodules. 



Nassa (Tritia) coppingeri, sp. n. (Plate IV. fig. 7.) 



Shell ovate, whitish, with a broad purplish-brown band at the top 

 of the whorls, and two others on the last, the upper one around the 

 middle, and the other somewhat below. Whorls 6, a little convex, 

 narrowly tabulated above, with a granulous clathrated sculpture ; 

 this consists of longitudinal and transverse ridges : the former are 

 not quite so distinct as the latter, are nodulous at the points of 

 contact, about 18 in number on the penultimate whorl, and 

 about 24 on the last, those near the labrum being closer to- 

 gether than the rest. The spiral ridges are flattened at the top, 

 with the edges sharply defined by the intervening grooves ; they are 

 four in number on the upper whorls, and seven on the last ; below 

 the seventh the whorl has a rather broad deep sulcation, beneath 

 which comes the raised ridge common to the genus. Aperture 

 nearly half the length of the shell, bluish white, exhibiting the ex- 

 ternal banding. Columella very arcuate in the middle, covered with 

 a thin white callosity, which projects rather prominently into the 

 aperture towards the base. Labrum not thickened exteriorly, armed 

 within with five lirae. Length 13| millims., diam. 7, aperture 6^ 

 long and 3i broad. 



Operculum triangularly subcircular, with a few minute serrations 

 on the inner margin towards the nucleus. 



Hab. Station 3. 



Only one specimen of this species was collected. It is remark- 

 able for its coarsely granular surface and the stoutness of the spire. 



? Nassa ( 1) t^niolata, Philippi. (Plate IV. fig. 8.) 



Buccinum tceniolatumy Phil. Archiv f. Naturgeschichte, 1845, 

 p. 69 ; Gay's Chile, vol. viii. p. 207, Atlas, pi. 4. figs. 9-9 b. 



Hab. Stations 2 and 3 ; " Chonos Is." {Philippi). 



There are seven specimens, all immature, which may possibly be 

 the young of this species. They do not, however, present six trans- 



