Hutxon. — On Ehachiglossate Mollusca. 233 



This species has been very well figured by Quoy. It is distinguished 

 from G. costata not only by its form and colour, but also by the tentacles 

 being slender, with the eyes near the middle ; whereas in C. costata, 

 according to Quoy, the tentacles are " short, thick, and rounded at the tip, 

 close to which the eyes are placed." 



Cominella lueida, Philippi, Zeitschrift f. Malak., 1848, p. 137 ; Icon, 

 hi., p. 46, pi. 1, f. 10; Tryon, Man. Conch., hi., pi. 81, f. 439. Buccimim 

 funereum, Gould, Pro. Boston Soc. Nat. Hist., hi. (1850), p. 152 ; U.S. 

 Exploring Expedition, Shells, Atlas, f. 320 ; Tryon, I.e., hi., pi. 81, f. 438. 

 Bug. zealandicum, Hombron and Jaccminot, Voy. Pole Sud, Zool. v., p. 74, 

 pi. 21, f. 5, 6 (1854) ; Tryon, I.e., hi., pi. 81, f. 437 [not of Eeeve] . 



Hob. Throughout New Zealand on mud flat's, and in slightly brackish 

 water. 



Yellowish-gray to brown-purple, the lighter varieties occasionally show- 

 ing faint spiral lines of darker, the aperture is about half the length of the 

 shell, and is dark purple, usually mottled with yellow. There are about 

 twelve plications on a whorl. The operculum is normal. The dentition is 

 figured in Trans. N.Z. Institute, xiv., pi. vi., f. o. 



This species is quite distinct from 0. acutmodosa, Eeeve, from S. Aus- 

 tralia. 



Sub-fam. Nassince. 



Animal with the foot large, and carrying at its posterior extremity two 

 small processes. Central tooth pectinated ; laterals with two cusps, and 

 sometimes intermediate serrations. Shell with the inner lip usually callous ; 

 the canal short and recurved, or a notch. Operculum ovate, the nucleus 

 apical. 



Genus Nassa, Lamarck. 



Shell ventricose ; inner lip with a posterior callosity, or blunt, dentiform, 

 plait ; outer lip dentated, internally crenulated. 



Nassa ephamilla, Watson, Jour. Linn. Soc, Zool. xvi., p. 370 (1882) ; 

 N.Z. Journal of Science, i., p. 442. 



Hob. N.E. of New Zealand in 700 fathoms. 



Eather small, thin, chalkily porcellanous ; ovate, with a shortish scalar- 

 spire, a rounded apex, a marginated suture, and a tumid base with very 

 short pillar. Whorls rounded and beset with small prickles. 



I have not seen this species, which was obtained by the Challenger 

 expedition. 



