217 



rather more compressed laterally, and have more crowded and 

 erect imbricating concentric scales. 



Locality. — 90 fathoms, off Cape Jaffa, 10 : 130 fathoms, 

 17; 300 fathoms, 1 : 100 fathoms, off Beachport, 6: 110 fatli- 

 oms, 3 ; 150 fathoms, 3 ; 200 fathoms, 1. Some were quite 

 recent, many were broken, all were dead. 



Family SCUTELLINTD^., Dall. 



Genus Scutellina^ Gray. 



Scutellina calva, spec, n v. PI. viii., figs. 9, 10. 



Shell minute, thin, conical, white; apex nearly central, 

 directed away from the opening of the muscle scar ; anterior 

 slope uniformly convex; posterior concave, just below the 

 apex, then barely convexly sloping to the margin. Summit 

 smooth, but for some accremental lines, then with crowded, 

 well-marked axial striae, distinctly granulated with concentric 

 striae. Base oval, margin level and simple. 



Dim. — Height, 2 mm. ; major diam., 2'8 mm. ; minor 

 diam., 1'8 mm. 



Locality. — 300 fathoms, off Cape Jaffa, 31 examples, 

 'dead ; 130 fathoms, 9 dead. 



Diagnosis from H elcioniscus illihrata, Verco. — -It is less 

 solid, has a curved apex, ffat base, axial lirge, no colour mark- 

 ings. 



Ohs. — I have called this little shell provisionally a Sni- 

 tellina, because its apex is directed away from the opening of 

 the muscle-scar; though its summit is nearly central. Its 

 specific name indicates its bald apex. 



Scutellina alboradiata, .s'/'ec. nov. PI. viii., figs. 1, 2. 



Shell minute, thin, depressed conic. Apex simple, sub- 

 central, slightly anterior, directed slightly away from the 

 opening of the muscle-scar. Base level, oval, somewhat nar- 

 rowed anteriorly. About eighteen very low, rounded, scarcely 

 perceptible ribs or radial undulations, and microscopic accre- 

 mental striae. Internal surface radially scratched. The rib 

 are ornamented with opaque white radii, rather wider than 

 the diaphanous interspaces. 



Dim. — Height, 2*2 mm.; maj. diam., 3'3 mm.: min. 

 diam., 2'4 mm. 



Locality. — Moonta Bay, Spencer Gulf ; collected in num- 

 l)ers in shell sand by Mr. A. Zietz. Several individuals were 

 in Tate's collection, labelled ''Scutellin-a, sp., S.A.," in the 

 same tube as shells which I lately described as XaceJJa crehri- 

 striata. So probably the locality of N. crehristriata is also 

 Moonta Bay. 



