GASTEROPODA 205 



Genus Zaclys, Finlay, 1926 

 Type (original designation) : Cerithiopsis sarissa, Murdoch 



Zaclys paradoxa, n.sp. (Plate LIV, fig. 1). 



Shell small, elongate-conical, tumid below, but tapering to a sharp point above. 

 Whorls nine, including a tall slender polygyrate protoconch of four whorls. Surface of 

 protoconch worn, but remains of the typical daphnellid reticulation and terminal carina 

 are distinguishable. Spire tall about \\ times height of aperture. Outline of spire con- 

 vex below and slightly concave above towards protoconch. Post-nuclear sculpture of 

 two spiral rows of very strong laterally compressed oval gemmules, about fourteen per 

 whorl. On the base there are two smooth strong spiral cords, one proceeding from im- 

 mediately below the suture and the other situated below towards the neck. Aperture 

 broken in all available specimens. 



Height 2-1 mm. ; diameter 0-9 mm. (Holotype). 



Habitat: Off Three Kings Islands, St. 934, 92 m. 



Differs from other species of the genus in having only two rows of strong gem- 

 mules. There is a deceptive resemblance to Hedley's Joculator, but that genus has a 

 smooth polygyrate protoconch. 



Genus Mendax, Finlay, 1926 

 Type (original designation) : Cerithiopsis trizonalis, Odhner 



Mendax attenuatispira, n.sp. (Plate LIV, fig. 5). 



Shell small, narrow, attenuated, with almost straight outlines. Whorls sixteen plus a 

 cylindrical protoconch of three whorls ; tip smooth, then sculptured with closely spaced 

 arcuate axial ribs. Post-nuclear whorls bicarinate, the lower carina slightly the more 

 prominent; both sculptured with rectangular nodules numbering about eighteen per 

 whorl. Suture margined above by a weak spiral thread. Spire about seven times height 

 of aperture. Base smooth. Aperture squarish with a short oblique partly restricted 

 recurved canal. Outer lip recurrent towards suture, where there is a rather deep sinus. 

 Colour pale buff. 



Height 5-4 mm.; diameter 1*3 mm. (Holotype). 



Habitat: Off Three Kings Islands, St. 933, 260 m. 



Genus Paramendax, n.gen. 



Type Paramendax apicina, n.sp. 



This genus is proposed for the species described below, which although superficially 

 similar to Mendax, has a very distinctive protoconch, the first whorl being small and 

 bead-like and the next two very much wider and sculptured with wide-spaced strong 

 axials. 



