199 



Locality. — Off Beachport, in 100 fathoms, 1 valve; 150 

 fathoms, 2 valves. Off Cape Jaffa, in 90 fathoms, 20 valves ; 

 in 130 fathoms, 1 valve. South-west of Neptunes, 104 fath- 

 oms, 3 alive and 26 valves. 



Cuspidaria angasi, E. A. Smith. 



NecBra angasi, n. sp., E. A. Smith, Chall. ZooL, vol. xiii., 



1885, p. 47, pi. ix., f. 2. Type locality. — Sta. 164b, off the coast 

 of New South Wales, 410 fathoma, green mud. 



Dredged in 130 fathoms, off Cape Jaffa, 2 alive, 1 dead, 

 3 valves. 



The ventral border and the lower border of the rostrum 

 of the right valve lie within the margin of the left valve, 

 while its dorsal borders, anterior and posterior, extend beyond 

 those of its fellow. 



Cuspidaria exarata, n. sp. PI. xii., figs. 6 and 7. 



Shell ovately-pyriform, subequilateral, thin. Umbo 

 round, inflated, directed backwards. Anterior dorsal margin 

 slightly convex ; front end with a round, uniform curve ; ven- 

 tral border gently arcuate, joining the rostrum with a short 

 incurvation. Post-dorsal slope nearly straight, barely in- 

 curved; rostrum short, slightly tapering. Fossette small, 

 directed obliquely backwards. Right valve has no distinct 

 tooth, but a low lamina runs from the fossette backwards for 

 half the length of the posterior slope, to make a shallow, nar- 

 row furrow with its slightly more projecting border. The an- 

 terior dorsal slope is bevelled on its inner side, and has the 

 trace of a furrow within it near the fossette. Interior glis- 

 tening, smooth, white, with subdistant radial translucent lines 

 ending at the simple pallial line. Externally about twenty 

 triangular concentric ribs, with sharp Urate summits and sub- 

 lenticular concentric striae on their sides ; the ribs become 

 less costate and more lamelliform towards the ventral margin, 

 and at the depression in front of the rostrum, over which they 

 are only irregular vertical striae. Colour dull opaque white, 

 with faint axial less white striations. 



Dim. — Antero-posterior diameter, 13'2 mm.; umbo-vent- 

 ral, 7"5 mm. 



Locality. — 35 miles south-west of Neptune Islands, in 104 

 fathoms, one right valve perfect and the posterior half of a 

 left valve, which if whole would be half as large again as the 

 type. 



Diagnosis. — It closely resembles C . trailli, Hutton, as 

 figured by Mr. Hedley in Trans. N.Z. Institute, vol. 38, 1905, 

 p. 72, pi. ii., figs. 9, 10, 11, dredged in 110 fathoms, east of 

 the Great Barrier Island. It is also about the same size, mine 



