Marshall. — Fauna of the Hampden Beds. 231 



whorl with ^a moderate anterior canal. The growth-lines, which are quite 

 distinct, indicate that the anal notch is rather deep, but the specimens have 

 not the aperture sufficiently well preserved to show it. The portion of 

 the body-whorl in front of the keel has large as well as fine striations. 



The number of tubercles on the keel and the number of fine spiral 

 striations distinguish this from the other New Zealand species. 



Five specimens, in a fair state of preservation. 



Type in the Wanganui Museum. 



Turris reticulatus n. sp. (Plate XVII, fig. 8.) 



Shell small, 15 mm. by 6 mm., but the greater part of the anterior 

 canal is wanting. Spire of six whorls, strongly keeled. Each whorl with 

 ■a number of strong spiral lines behind and in front of the keel. On the 

 penultimate whorl there are ten of these lines above and five below the 

 keel ; the second from the U})per suture and that on the keel are by far 

 the strongest. On the keel there are sixteen well-developed tubercles, 

 which are rather larger radially than longitudinally. Well-marked growth- 

 lines pass through the tubercles and reach the upper suture. Where they 

 cross the second spiral line below the suture they give rise to small 

 tubercles, which are far more prominent on the upper whorls than on the 

 lower. The intersection of the growth-lines and the spirals give rise to an 

 appearance that is almost reticulate. The anterior part of the body- whorl 

 has more marked spiral lines and very numerous growth-lines. Clolumella 

 smooth, but aperture not fully preserved. 



One specimen only, not very well preserved. 



Type in the Wanganui Museum. 



Surcula gravida n. sp. (Plate XVI, fig. 4.) 



Shell large,, fusiform, 70 mm. by 28 mm. Spire of moderate length and 

 composed of five whorls. Whorls convex and sharply keeled, but no 

 tubercles on the keel. Aperture about half the length of the shell, but 

 lips imperfectly preserved. Anal sinus deep, not sharp, but well rounded. 

 Ornamentation : A distinct border in front of the suture. A number of 

 rather prominent spiral lines both above and below the suture. On the 

 penultimate whorl there are eleven of these in front of the keel and nine 

 behind it. On the body-whorl the spiral lines in front of the keel are 

 less prominent, and there are no spiral lines on the beak. 



This species approaches, though rather distantly, to *S'. hamiltoni (Hutt.). 

 The spiral angle, however, is 40°, in place of 25° in >S'. hamiltoni. The 

 ornamentation is quite different. There are tubercles on the keel of 

 S. haniilloni and no spiral lines above it, and there are no spiral lines on 

 the beak. 



A single fairly perfect specimen, though a little compressed. 



Type in the Wanganui Museum. 



Surcula marginalis n. sp. (Plate XVII, fig. 10.) 



An imperfect specimen only. Seven whorls remain on the spire, and 

 there is a protoconch of three whorls. In the first six whorls there are 

 eighteen tubercles on the keel, but the last whorl is smooth. Sutures 

 prominently bordered in front. All portions of the whorl have prominent 



