Marshall. — The Wwngaloa Beds. 457 



Turris striatus n. sp. (Plate XXXV, fig. 31.) 



Shell of moderate size, 20 mm. high, 11 mm. wide. Spire with 4 whorls, 

 each with a prominent carina near the posterior border, giving the shell 

 a turreted appearance. Each whorl with strong spiral ridges ; on the pen- 

 ultimate whorl there are 7 of these behind the carina, and 3 small ones in 

 front of it. The number of spiral lines is less on the upper whorls, and the 

 highest whorl is almost smooth. The strong development of the growth- 

 lines makes these spiral lines appear somewhat tuberculate. Body-whorl 

 with prominent carina and spiral lines make this species quite distinct from 

 other New Zealand Turritidae. 



The only Eocene species mentioned by Cossmann comes from South 

 Australia, and this horizon is now generally considered to be of later age. 

 Dickerson has recently reported several species from the Eocene of Cali- 

 fornia. 



One specimen. Type in the Otago Museum. 



Daphnella multicincta n. sp. (Plate XXXV, fig. 30.) 



Shell small, 14 mm. by 5 mm., oval, biconical, distinctly spiralled. 

 Sculpture consisting of blunted spiral ribs rather narrower than the inter- 

 vening grooves, of which there are 25 on the body-whorl : these are 

 crossed by numerous growth-lines. Whorls 5, gradually decreasing, slightly 

 concave above. On the concave portion the spiral lines are much less 

 distinct than elsewhere. Growth-lines bent backward on the concave portion. 

 Suture w T ell marked. 



Several specimens, in good condition. Type in the Otago Museum. 



Cossmann records one species from the Loire inferieure, of Eocene age. 

 All other species are recorded from later horizons. 



Daphnella ovata n. sp. (Plate XXXV, figs. 28, 29.) 



Shell small, 8 mm. by 5 mm., but the majority of specimens are much 

 smaller than this. Form ovate ; vertically costate and spirally striate. 

 Costae about 15 on a whorl, extending from suture to suture ; the costae 

 on the body-whorl extend to rather below the middle. Spiral striae rather 

 flattened, about as wide as the grooves. There are 5 of these striae on the 

 penultimate whorl, and about 20 on the body-whorl. Growth-lines are not 

 noticeable. The posterior part of each whorl almost destitute of spiral 

 lines. Spire consisting of 5 whorls, each convex, though the backward 

 slope to the suture is slightly concave. Suture very distinct. Aperture 

 oval ; canal very short. 



Three specimens, well preserved. Type in the Otago Museum. 



Acteon semispiralis n. sp. (Plate XXXVI, figs. 35, 36..) 



Shell oval, small, 10 mm. by 5 mm. Sculpture of well-formed spiral 

 bands, 3 in number on the lower part of each whorl ; on the body-whorl 

 these are 17 in number, but they are absent from the portion between the 

 suture and the rounded shoulder of the whorl. Interstices about the same 

 width as the bands ; no axial threads can be distinguished in the interstices. 

 Spire conical, less than half the height of the shell. Whorls 5, each whorl 

 distinctly angled above. Suture deep, canaliculate. Aperture narrowly 

 oval. Columella with a large fold near the top. 



Several specimens, fairly well preserved. Type in the Otago Museum. 



The genus Acteon extends from the middle Cretaceous to the present day. 



