1875.] G-. & H. Nevill — Descriptions of new Marine Mollusca. 89 



Clathttrella Malleti, Reel., PI. VII, Pig. 4. 

 J. de Conch. .1852, p. 254, {Pacific 0.) 

 I found seven or eight specimens of this lovely species alive at the An- 

 damans, at Ross Island and North Bay, under blocks of coral at low water ^ 

 the shell is of the most brilliant purple imaginable ; it agrees exactly with 

 the original figure and description. (G. Nevill.) 

 (Coll. Indian Mus. and Rev. J. Warneford.) 



Clathttrella perplexa, n. sp., PL VII, Fig. 5. 



This shell, though in many respects so like Mangelia FairlanJci, 

 should probably be classed as a Clatlnorella ; whorls 8, the last very short, 

 three first embryonal, the others broadly, somewhat indistinctly longitudi- 

 nally ribbed, ribs not so straight as in M. Fairbcmhi, but somewhat 

 rounded, especially on the last whorl, three raised transverse striae on the 

 lower portion of each whorl, the uppermost one almost obsolete, a charac- 

 teristic raised transverse keel immediately below the suture ; uniform ash-color, 

 a shade or two darker in the interstices of the ribs and near the apex ; co- 

 lumella, outer margin of the lip and interior of the aperture bright chesi nut- 

 brown, columella a little twisted, outer lip very sharp, irregularly undulat- 

 ing, obsoletely granulated just within the aperture. 



Long. 6, diam. 2f- mil. 



Type Bombay ; also found in Ceylon. 



(Coll. Indian Museum, and H. Nevill.) 



Clathurella nigroclncta, Montr., PI. VII, Fig. 6. 

 /. de Conch. 1872, (N. Caled.) 



The colouration of the last whorl is remarkable : there are five rows of 

 distant elongated nodules, of which the two first rows next tho suture are 

 of a leaden colour on a broad black band, the third row of a brilliant orange, 

 the fourth and fifth pure white, these five rows of nodules (coloured in the 

 same way) are then repeated. 



About twenty living specimens of this shell were found at the Anda- 

 mans, on Blair's Reef, Aberdeen, and Ross Island, under blocks of coral at 

 low water. 



Long. 9, diam. 4 mil. 



Clathttrella singttlaris, n. sp., PI. VII, Fig. 10. 

 Shell elongate, fusiform, sub-conical, apex pointed ; white, in the centre 

 of the ribs on the last whorl ornamented with obsolete brown spots ; whorls 

 nine, the first four embryonal, smooth, on the fourth traces of convex sculp- 

 ture only, the last five transversely, regularly, rather broadly, somewhat 

 distantly striated, longitudinally faintly and obtusely ribbed, nine ribs on 

 the last whorl, becoming obsolete towards the base, the last rib next the 



