L^DA.— Plate III. 



at tho end, dorsal margin crennted, bordered with 

 a flat depressed area; ventral margin rather 

 straight in the middle. 



A. Adams. Proc. Zool. See, 1856, p. 50. 



Hah. AVest Indies. 



A mucli more tumid and solid shell than L. 



which it slightly resembles. 



n7« 



Species 14. (Mus. Brit.) 



L;eda tellixoides. Lend, tcstd late lanceolatd, alhd, 

 valde compressd, siihcequilaterali, antice et medio 

 oblique et undulatim striata, utrinque subrostratd, 

 terminibus rotundatim acuminatis, 7nargine ventrali, 

 valde convexo, ve7-sus tei-minos excavato, marginc 

 dorsali rectivseulo, latere postico angustiuscvlo. 



The Tellina-shaped L^da. Shell widely lanceolate, 

 white, much compressed, subequilateral, anteriorly 

 and in the centre obliquely and undulately striated, 

 subrostrated at each end, the ends roundly acu- 

 minated, ventral margin very convex, excavated 

 towards the ends ; dorsal margin rather straight, 

 posterior side rather narrow. 



SowERBY. Genera of Shells, Tellina, fig. 2. 



Jfal). Cumana. 



Itemarkable for the very arched form of the ventral 

 margin in the centre. 



Species 15. (Fig. a, h, Mus. Cum. in Brit.) 



L.«DA CONCINNA. Lird. testd hmccolato-cuiieifurmi, • 



pret-m, auicentrice lii-atd, c/iidi'mi/de corneo iiid 



hdere antico hreviusado, marginc dorsali rectiusculo, 

 cuneato ; latere postico anguste rostrato, producto, ad 

 ttiininum anguste ti-uncato, rostra costellis vionili- 

 f(n-mibus duahis obliquis marginato. 

 The neat L.eda. Shell lanceolately cuneiform, com- 

 pressed, concentrically ridged, covered with a 

 horny epidermis ; anterior side rather short, dorsal 

 margin rather straight, cuneated ; posterior side 

 narrowly beaked, produced, narrowly truncated at 

 the end, beak bordered with two bead-like obliriue 

 little ribs. 

 A. Adams. Proc. Zool. Soc, 185G, p. 48. 

 Ilab. New Zealand. 



IG. (Mus. Cum. 



JjJEDk roLiTA. Lad. oblongo-pyriformi, IcBvigatd, per- 

 ohlique undulatim striata, epidermide polito viridi 

 indutd ; latere antico valde inflato, rotundo ; latere 

 postico cuneato, acuminato, angusto, rostrato, ad 

 rostrum hand striata, margine ventrali sursum 

 acclivi ; margine dorsnli depresso, marginihus siih- 

 ertctis. 

 The roLisnED L^da. Shell oljloiig-pyriform, smooth, 

 very obliquely, undulately striated ; covered with 

 polished green epidermis, anterior side much in- 

 ilated, rounded ; posterior side cuneate, acumi- 

 nated, narrow, beaked, not striated at the beak, 

 ventral margin sloped upwards, dorsal margin 

 depressed, with the margins rather erect. 

 SowERBY {XiKuh). Proc. Zool. Soc, 1832, p. 198. 

 Hab. Panama. 



A very beautiful inflated pear-shaped species. 



