308 Transactions. 



crossed by close-set longitudinal ribs as strong as the spirals, 

 they die out on a level with, the posterior angle of the aperture, 

 and the base has three spirals only. Columella vertically arcu- 

 ated ; aperture diagonal-oval, a little angled where the outer 

 lip joins the columella, behind which is a deep groove. The 

 outer lip is thickened externally, especially where it joins the 

 body-whorl. Length, 2 mm. ; breadth, l - 25mm. 

 " Near R. gradata, Hutton (H. S.)." 



Columbella dasmona, n. sp. Figs. 8, 8a. 



Shell dull, pale-cream colour with rufous markings. Whorls 

 5, slightly rounded, of which the first is glossy without sculpture 

 while the second is finely radiately striated. Sutures well 

 marked ; columella vertical, with a slight covering of enamel ; 

 lip thin, with twelve faint denticles. Canal with about fifteen 

 obscure striations, the entire shell with fine incremental stria?. 

 Length, 7 mm. ; breadth, 2 mm. 



Columbella compta ( = neat), n. sp. Figs. 9, 9a. 



Shell white, with four rather glossy whorls, one of which is 

 the shining protoconch. Sculpture : Close spiral cinguli crossed 

 by fine incremental striae. There are no spirals visible on the 

 earliest sculptured whorl. Sutures well marked ; columella 

 vertical ; outer lip thin, devoid of denticles. Length, 3 mm. ; 

 breadth, 1 mm. 



EXPLANATION OF PLATE XXXVIII. 



„.^' . ' I- Mangilia murrhea, Webster. 



Fig. 2. ,, infanda, Webster. 



Fig. 3. Drillia multiplex, Webster. 

 Fig. -4. | 



Fit;. Ui. I Daphnella acideata, Webster. 

 Fig. -lb.) 



Fig. 5. | 



Fig. 5a. - Newtoniella stiria, Webster. 



Fig. 56.) 



Fi Ca I Triphora infdix, Webster. 



Fi §- "'■}.. 



Fit*, la. V Rissoia pingue, Webster. 



Fig. lb.) 



x,- ' " - Columbella dcemona, Webster, 

 rig- 8a. i 



Fi^ 9a I' " compta, Webster. 



