438 THE CRUISE OF THE ' CUBAQOA.' 



PLATE XXXVni. Figs. 7, 8, 9. 

 NEBITINA 8UBBUGATA, Baird. 



Shell very obliquely-ovate, sub-globose ; spire much eroded, 

 scarcely exserted, spirally ridged round the whorls, which are 

 distinctly angled, rudely wrinkle-striated longitudinally, rather 

 rough, of a dark olive colour, the wrinkled striae pale yellowish ; 

 columella area slanting, sinuated in the middle, finely toothed, 

 last tooth much larger than any of the others, lip thin, slightly 

 channelled at the upper part, bluish-coloured within ; operculum 

 bluish-stained, with a reddish margin, and bisected with a some- 

 what raised rib. 



Height 9 lines. 



Breadth 7^ lines. 



Hah. Upolu, Samoan group. 



? An Neritina huvierosa, Mousson, var.. without spines. See 

 ' Journ. de Con.,' xiii. p. 188. 



PLATE XXXVIII. Figs. 10, 11. 

 NEBITA STBIGTA, Baird. 



Shell narrow, ovate ; spire not exserted, flatly depressed, small ; 

 whorls spirally ribbed ; ribs rather thin, numerous, interstices 

 densely lined with very fine striae which sometimes extend over 

 the ribs ; columella area rather narrow, yellow, edge toothed 

 with only 3 or 4 teeth ; inner part of mouth yellowish-green, 



