12 GASTEEOPODA. 



26. P. ItBViS, sp. noc. Spire acute ; whorls smooth, with median 

 ti-ansverse ribs, which are flatter on the body whorl ; aperture ob- 

 long, fissure deep, close to the suture ; canal very short ; body whorl 

 shorter than the spire. Pale yellow brown, with a broad spiral band 

 of pink down the centre of the whorls, across the ribs ; mouth and 

 columella white, shading off into pink. Length, '75 ; breadth. '28 ; 

 angle of spire, 30. 



Stewart's Island. 



27. P. allbLlla, sp. nov. Spire acute ; whorls spirally grooved, 

 and with a central prominent spiral rib ; smooth ; aperture oblong, 

 canal very short ; body whorl as long as the spire. Ochraceous white ; 

 apex and columella white. Length, '35 ; breadth, "15 ; angle of spire, 

 30. 



Stewart's Island. 



LACHESIS. 



Turreted, whorls convex ; suture straight and deep ; aperture 

 obovate, prolonged into a very short canal. 

 Europe. 



28. L. SLllcata, sp. nov. Body whorl about as long as the spire ; 

 whorls rather flattened, deeply distantly spirally grooved, about eight 

 on the body whorl ; outer lip thickened. Reddish brown, sometimes 

 variegated with white. Length, '35; breadth, '15. 



Stewart's Island. 



DAPHNELIA. 



Fusiform, the last whorl as long as the spire; aperture oval, canal 

 very short, outer lip with an indentation near the suture. 

 New Guinea. 



29. D. (Mangelia) letourneuxiana, Crosse, Joum. de 



Condi., 1865, p. 425. Spire acute, as long as the body whorl; trans- 

 versely ribbed, and finely spirally striated ; columella smooth. Pale 

 brown or purplish brown, with a spiral pale band. Length, "43 : 

 breadth, '17. 



Stewart's Island. Chatham Islands. Australia. 



FAMILY TRITONIEDJE. 



Head truncated ; tentacles moderate ; mantle enclosed. Shell 

 yariced ; operculum oval, nucleus sub-apical. 



TRITON. 



Shell ovate ; canal rather short ; spire conical, with few varices not 

 arranged under one another. 

 All warm seas. 



* 30. T. Variegatum, Lamark, I.e., ix., p. 623. Spire very 

 acute ; whorls with broad flat spiral ribs, with smaller ones between 

 them, sutures banded with a nodulous rib ; columella wrinkled ; outer 

 lip creuulated. Brown or pinkish brown, ribs paler, with purplish 

 black chevroned transverse bands ; interior salmon-coloured ; columellft 



