GASTEROPODA 187 



This species differs from both errata, Finlay, 1926, and cuvierensis, Mestayer, 1919, 

 in having more numerous and even spirals, alternating interstitial axials of similar 

 strength, giving a honeycomb effect to the surface of the shell, and no umbilicus. 



Crosseola intertexta, n.sp. (Plate LI, fig. 12). 



Shell small, white, solid, turbinate, imperforate. Sculpture consisting of rather strong, 

 spaced, smooth, spiral cords with thin arcuate closely spaced threads in the interspaces. 

 There are three spiral cords on the spire whorls and seven on the body whorl, the upper 

 three being stronger and more widely spaced than the four on the base. Spire half 

 height of aperture. Whorls 3 \, including a small smooth protoconch of one low convex 

 whorl. Aperture circular. Peristome continuous, blunt edged but not thickened, cor- 

 rugated by the external sculpture. Columella vertical, slightly arcuate, and produced 

 below into a broad tongue-shaped process with a medial groove, which marks the ter- 

 mination of a heavy axially crenulated basal fold. A deep groove separates the basal 

 fold from the inner lip callus, but there is no true umbilicus. 



Height i-8 mm.; diameter 1-65 mm. (Holotype). 



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



This is allied to the previous species but differs from it in having the spiral sculpture 

 predominant over the axial, the upper spirals the stronger, and a much shorter spire. 



Genus Conjectura, Finlay, 1926 

 Type (original designation) : Crossea glabella, Murdoch 

 Conjectura atypica, n.sp. (Plate LI, figs. 10, 11). 



Shell minute, elevated turbinate, moderately solid, white and glossy, having angulate 

 upper whorls, a flattened apex, and narrow crescentic umbilical chink. Whorls 3 \, in- 

 cluding a tiny planorbid protoconch of il smooth whorls. Spire whorls with a slight 

 shoulder, angulation just above the middle. Body whorl and base evenly convex. 

 Aperture circular, peristome continuous. Outer lip thin; inner lip with a slight callus 

 which is separated from the umbilical chink by a crescentic groove. There are two weak 

 ridges which emerge from the umbilicus and border the lower part of the inner lip. 

 Height i-8 mm.; diameter 17 mm. (Holotype). 

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



This species is not a typical Conjectura, but seems to be nearer to that genus than to 

 Cirsonella. 



Family TURBINIDAE 

 Genus Argalista, Iredale, 191 5 

 Type (original designation) : Cyclostrema fluctuata, Hutton 

 Argalista rotella, n.sp. (Plate L, figs. 18, 19). 



Shell small, white, moderately solid, depressed, widely umbilicate. Whorls 3 J, in- 

 cluding a smooth low convex protoconch of ij whorls. Sculpture of post-nuclear 



5-2 



