GASTEROPODA 203 



Genus Dardanula, Iredale, 19 15 



( = Dardania, Hutton, 1882. Type (by monotypy) : Dardania olivacea, Hutton). Type (of Dardanula) 

 (by subsequent designation, Finlay, 1924): Dardania olivacea, Hutton 



Dardanula roseospira, n.sp. (Plate LIII, fig. 13). 



Shell minute, elongate-conical, smooth and polished. Colour light yellowish brown, 

 protoconch light pink, merging gradually over the first post-nuclear whorl into the light 

 brown of the rest of the shell. Spire tall, slightly greater than height of aperture. Outline 

 of whorls lightly convex, body whorl narrowly rounded at periphery, but not angulate. 

 Whorls 4^, including a dome-shaped smooth protoconch of i\ whorls. Surface smooth, 

 except for very faint but closely spaced axial growth lines. Aperture ovate. Peristome 

 thin and sharp, almost continuous, joined across the base by the parietal callus. There 

 is a slight groove behind the columellar portion of the inner lip, but there is no true 

 umbilicus. 



Height 1-4 mm. ; diameter 0-95 mm. ; (Holotype). 



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



This species differs from its relatives, roseola, Iredale, 1915, and roseocincta, Suter, 

 1908, in being proportionately slightly broader and in having different coloration, which 

 is very constant. 



Dardanula tenella, n.sp. (Plate LIII, fig. 15). 



Shell minute, elongate-conical, thin, smooth and polished. Colour translucent buff, 

 with a peripheral series of small squarish opaque white dots alternating with irregular 

 faint blotches of light brown. Also there are a few irregular faint light brown blotches in 

 a spiral series just beneath the suture. Spire tall conical, about if times height of 

 aperture. Outline of whorls lightly convex, body whorl narrowly rounded at periphery. 

 Whorls 4 1, including a smooth dome-shaped protoconch of ii whorls. Aperture ovate. 

 Peristome thin and sharp, connected across parietal wall by a well-defined callus. 

 Columellar portion straight and vertical. There is no umbilicus. 



Height 2-1 mm.; diameter 1-3 mm. (Holotype). 



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



Apart from the tenuity of the shell the type of aperture and style of shell are in strict 

 accord with Dardanula. It recalls Cithna, but lacks the slightly emarginate base of that 

 genus. 



Dardanula pallida, n.sp. (Plate LIII, fig. 16). 



Shell minute, elongate-conical, thin, smooth and polished. Whorls 4I, including a 

 smooth dome-shaped protoconch of i.l whorls. Spire tall, conical, straight in outline, 

 if times height of aperture. Body whorl subangulate at periphery. Colour very pale 

 pinkish buff, interior of aperture white. Aperture and peristome typical. Imperforate. 



Height 1-65 mm.; diameter 1-05 mm. (Holotype). 



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



This species is very similar to the littoral D. olivacea lutea (Suter, 1908) but is much 



smaller, has a thinner shell and is much lighter in colour. 



7-2 



