232 Transactions. 



spiral striations, including the tubercles. As shown by the growth-lines 

 the anal sinus is moderately sharp, but less so than in *S'. hamilfoni Hutt. 



This species is closely related to S. hamilfoni, but differs from it in 

 having the prominent border of the suture, more numerous tubercles, and 

 a much more abundant spiral ornamentation both above and below the 

 keel. 



A single imperfect specimen. 



Type in the Wanganui Museum. 



Surcula equispiralis n. sp. (Plate XVI, fig. 3.) 



Specimen imperfect, not showing the aperture. Length, 20 mm. ; 

 width, 7 mm. The remaining part of the spire consists of six whorls, which 

 are slowly tapering, and each one is clearly convex. Each whorl with 

 about twelve nodular elevations on the carina. These are slightly extended 

 transversely, but do not reach either suture. They are inclined forward 

 anteriorly. There are many fine spiral lines developed equally on all parts 

 of the whorl. Suture bordered in front by a raised ridge, which is marked 

 spirally like the rest of the whorl. 



Mr. Suter remarks that this species is nearest to *S'. pareoraevsis Suter. 

 The nodules, however, are much more prominent, the suture more dis- 

 tinctly bordered, and the spiral ornamentation more prominent than in 

 that species. 



A single specimen, imperfect, but showing the sculpture very distinctly. 



Type in the Wanganui Museum. 



Surcula torticostata n. sp. (Plate XVII, fig. 7.) 



Shell small, and the specimens quite imperfect; 13mm. by 4mm. 

 Spire long and slender ; six convex whorls showing in the best specimen. 

 Suture impressed with a well-marked border anteriorly. Whorls with 

 eighteen radial ridges, which extend from suture to suture and are strongl}' 

 twisted forward at the anterior end. A series of very fine spiral striae 

 cover all parts of the whorls. Aperture not preserved in any of the 

 specimens, but the fairly distinct growth-lines show that the anal notch 

 was broad and rounded. 



Four specimens, which show the ornamentation clearly, but the anterior 

 part of the shell is not preserved. 



Type in the Wanganui Museum. 



Terebra sulcata n. sp. (Phxte XVI, fig. 2.) 



Shell of moderate size, 30 mm. by 8 mm. Spire gently tapering, and 

 consisting of six very slightly convex whorls. Sculpture consisting of large 

 sharp transverse ribs, which are slightly bent backwards in the middle. 

 There arc twenty of these ribs on the body-whorl, and they are nearly as 

 ])rominent on the body-whorl as on the higher whorls. 



The only specimen is incomplete, though the sculpture is distinct. 

 Mr. Suter says that the species approaches more closely to T. biplex than to 

 any other .species. 



Type in the Wanganui Museum. 



