268 . Transactions. 



anteriorly. Aperture oval, anal notch rather shallow ; anterior canal of 

 moderate length. Ornamentation : 10 broad and rounded radial costae in 

 each whorl. These costae extend to the anterior but not to the posterior 

 suture. Surface of the shell quite smooth except at the end of the beak, 

 which has 10 feeble spiral lines. Protoconch consists of 3 whorls. 



The smoothness of the surface distinguishes this species. 



Two specimens, in good condition. Type in the Wanganui Museum. 



Surcula ordinaria n. sp. (Plate XX, figs. 4, 4a.) 



Shell of rather large size, 32 mm. by 8 mm. ; fusiform, with a tapering 

 spire of 6 or 7 whorls. The narrow aperture is half the length of the shell, 

 and is prolonged into a long anterior canal. The outer lip is thin, with a 

 broad shallow anal notch near the suture but separated from it. Inner 

 lip smooth. Protoconch smooth, of 4 whorls. Ornamentation is not con- 

 spicuous. In each whorl the posterior suture is margined with a broad 

 spiral swelling. On this there are fine barely visible spiral striations, which 

 are also to be distinguished on all the posterior part of the whorl as far as 

 the keel. This is well marked, and has about 12 rounded tubercles on 

 each whorl. Anterior to the keel there are about 9 spiral lines, more con- 

 spicuous than those posterior to it. Lines of growth numerous and well 

 marked. Body-whorl with numerous spiral lines, about every fourth of 

 which is larger than the others. Fifteen of these larger lines can be 

 distinguished. 



Three specimens, two of which are in good condition. Type in the 

 Wanganui Museum. 



x &~- 



Turris ornatus n. sp. (Plate XVIII, figs. 8, 8a.) 



Shell small, fusiform, 18 mm. by 6 mm. Spire of 6 whorls, each with a 

 pronounced keel. Suture impressed. Body-whorl rather more than half 

 the total length, but aperture rather less than half. Aperture oval in 

 form and produced anteriorly into a long canal. Anal notch rather deep. 

 Columella nearly straight and. covered with a thin callus. Ornamentation : 

 A broad keel with about 24 rounded tubercles on each whorl. A second 

 smaller keel posterior to this, and a third near the posterior suture, but 

 the last is quite small : both of these are slightly rough but have no 

 well-defined tubercles. Two slender spiral lines in front of the keel and one 

 on the posterior side. Abundant and prominent growth-lines. Body-whorl 

 with a number of nearly equal spiral ridges in front of the keel, and these 

 are crossed by numerous growth-lines. 



Two good specimens and other fragments. Type in the Wanganui 

 Museum. 



Turris kaiparaensis n. sp. (Plate XVIII, figs. 9, 9a.) 



Shell small, fusiform, 20 mm. by 7 mm. Spire of 7 whorls, strongly 

 keeled. Body-whorl about half the length of the shell. Aperture about 

 one-third, oval, rather obtuse posteriorly but anteriorly produced into a long 

 canal. Columella nearly straight and very slightly callous. Anal notch 

 deep. Ornamentation : A prominent keel with a slight median groove 

 bearing 22 rounded tubercles in each whorl. Eleven thin spiral threads 

 posterior to the keel, the one nearest to the suture being much the largest. 

 Spiral threads crossed by many thin lines of growth. Body-whorl with 

 3 prominent rather diverging spiral lines anterior to the keel : the middle 

 of these passes through the point where the outer lip joins the shell ; the 



