264 Transactions. 



a little behind the middle of the whorl, and the other two lie between it and 

 the suture in front. Each of the spiral lines is continuous over the radial 

 lines, of which there are 18 in each whorl. 



Only one specimen was found, and it is somewhat incomplete, but the 

 ornamentation is quite distinct from that of any other New Zealand species. 

 Type in the Wanganui Museum. 



Fusinus corrugatus n. sp. (Plate XXII, figs. 9, 10.) 



Shell of moderate size, fusiform, 21 mm. by 5 mm. Spire a little less 

 than half the length of the shell, consisting of 6 whorls, each strongly convex. 

 Aperture oval, and narrowing anteriorly' into a moderately long canal. 

 Protoconch of 3 whorls, smooth. Ornamentation : 7 rounded axial costae 

 in each whorl, extending from suture to suture, but much higher on the 

 keel than elsewhere. Spiral threads some 6 in number in each whorl but 

 extremely unequal, the one that marks the keel being much more pro- 

 minent than all the others, and the one anterior to it also much larger than 

 the rest. The spiral lines are particularly strong on the costae, where 

 they form prominent projections. Very small spiral threads between every 

 pair of larger ones. Suture not pronounced, wavy. Body-whorl with 

 similar ornamentation, the spiral lines being continued to the end of the 

 beak, but they are much less prominent there. 



Two specimens, one almost complete, the other without its beak. Type 

 in the Wanganui Museum. 



Dolicholatirus (Pseudolatirus) ornatus n. sp. (Plate XVIII, figs, 3, 3a.) 



Shell of moderate size, 25 mm. by 10 mm. Shape fusiform. Spire of 

 6 whorls, protoconch of 2 whorls. Suture compressed wavy. Aperture 

 pyriform, almost half the total length of the shell, and produced anteriorly 

 into a long canal but somewhat truncated posteriorly. Outer lip thin, 

 with 12 internal projections. Columella slightly bent inwards where the 

 aperture narrows into the anterior siphon. Columella slightly callous, 

 smooth but furnished with 5 small projections, 2 of which are the terminal 

 points of columellar folds. At the base of the aperture 3 small pro- 

 jections. Ornamentation : 7 prominent radial costae on each whorl. The 

 costae in successive whorls are not arranged in a straight line but form 

 a spiral directed backwards. Each whorl with a large number of spiral 

 threads. About every fourth thread is much larger and forms prominent 

 elevations where they cross the costae. Strong lines of growth. On the 

 body-whorl the costae extend to the beginning of the anterior canal. 



Six specimens. Type in the Wanganui Museum. 



Siphonalia flexuosa n. sp. (Plate XXII, figs. 11, 12.) 



Shell of moderate size, of oval shape, 28 mm. by 17 mm. Spire of 6 

 whorls rapidly decreasing in size. Aperture rather less than half the length 

 of the shell. Outer lip moderately thick and ornamented internally by 

 several short spiral lines. Anterior canal bent sharply to the right and of 

 moderate length. Ornamentation : 10 radial costae on each whorl : these 

 extend to the anterior suture but barely reach the posterior one : they are 

 more distinct in the upper whorls. Suture strongly margined anteriorly. 

 Posterior portion of each whorl concave in outline. All parts of the whorls 

 have spiral ribs, which are large and rounded. There is usually one small 

 thread between each pair of ribs. Large spiral threads are less pronounced 

 on the beak, and the interstitial threads are more numerous. Growth- 

 lines are numerous and conspicuous on the body-whorl. 



