22 



ADDITIONS TO THE MAEINE MOLLUSCAN FAUNA OF NEW 

 ZEALAND, WITH DESCRIPTIONS OF NEW SPECIES. 



By Henry Sutee. 



Read \Wi December, 1907. 



PLATES II AND III. 



1. Canthakidus op ALUS, Martyn, n.var. biangulatps. 



Differs from the typical form in the disproportional expansion of 



the last whorl, beginning after the first quarter of the volution ; it 



rapidly protuberates, getting broadly shouldered above, flat at the 



periphery, and having a biangulate outline. The suture on this part 



of the shell is canaliculate ; the aperture subpentagonal ; the base 



flatly convex. There are about eight whorls. Diam. maj. 27, 



min. 23 mm, ; height 37 mm. 



Hob. — Cook Strait. 



Two specimens, both alike, were found by Capt. J. Eollons. Had 

 there been only one I certainly would have taken it for a monstrosity, 

 but as two were found I am inclined to consider them as a well- 

 established variety. Anyhow, it is certainly worth while to put this 

 curious form on record. The whole shell is covered with Nulliporites. 

 Type in my collection. 



2. MoNiLEA (Minolta) semiketicolata, n.sp. PI. II, Fig. 1. 



Shell small, depressed turbinate, thin and fragile, spirally lirate. 

 Sculpture consisting of numerous, slightly elevated, and rounded liroe, 

 six on the penultimate, about sixteen on the body-whorl ; those on the 

 upper surface with a fine spiral thread in the interstices, which are 

 of about the same width as the riblets ; the lirse on the outer side of 

 the base are finer and closer together, on the inner side three 

 broad, slightly crenulated ribs surround the umbilicus, which is also 

 prominently spirally ribbed. The two lirae below the suture are 



