285 



rotuiuluto ; oxtremitate posticu obtuse cmipifonni ; flexura costiiqiio 

 umbonali subobsoletis ; ligamento satis proiniucuto ; deute laterali 

 (listiucto, subapproximato. 



Suboval, inequilateral, ratlier compressed, very tliiu, pellucid, 

 white, with regular and not very close obli(|ue strife ; ventral edge 

 nearly straight ; dorsal margin more or less convex and not greatly 

 sloping in front, nearly straight and moderately sloping l)ehind; 

 anterior side the longer, rounded ; posterior extremity obtusely 

 w^edge-shaped ; ligament moderately prominent ; fold and tlexurc 

 obsolete ; lateral tooth chstinct, subapproximate. 



Chiriqui, West Columbia. 



119. Tellina STMiLis (pi. Ivii. f. 65.) Sowerbi/, Brit, Miscel. 

 pi. 75 ; Mont. Test. Brit. Si;p. p. 167; Turt. Biv. Brit. p. 102; 

 Philip. Ab. und Bes. Conch, part 9. pi. 5. f. 7. 



T. testa subovali, solichuscula, ina^quilaterali, convexa, nitida, 

 extus intusque albida, concentrice et oblique striata; striis obli- 

 quis, minutis, confertissimis ; ultima parte postica altera in val- 

 vula sublge\agata, in altera autem striis subimbricatis haudque 

 coufertis concentrice exarata ; margine ventrali subrccto ; dorsali 

 antice convexiusculo, postice brevd subretuso, utrinque paulidum 

 dech\d; latere antico longiore, rotundato; extremitate postica 

 obtuse biangulata; costa umbonali satis conspicua; ligamento 

 prominente ; dente laterali magiio, approximato. 



Suboval, moderately strong, inequilateral, convex, glossy, whitish 

 both within and without, with a few concentric and crowded mi- 

 nute obli(|ue strise, which do not extend to tlie obtuse liinder 

 extremity, but are replaced before reaching the distinct mnbonal 

 ridge, by not very close subimbricated stria; (obsolete in one of the 

 valves) ; ventral edge straightish ; dorsal not greatly sloping on 

 either side, convex in front, short and retuse behind ; anterior side 

 the longer, rounded; ligament prominent; lateral tooth large, 

 approximate. 



West Indies. ^.^j^i- ^^ 



120. Tellina decora (pi. Ivi. f. 27.,.lix. f. 127., aud.lxvi. 

 f. 260.) %, Jour. Acad. Philad. voL v. ' ^ 



T. tests, T. simili simillima, sed minor(^, magis convexa, magis 

 ina^quilaterali, radiis angustis roseis ornata ; margine cardinali roseo 

 sub ligamento. 



Very like a ycmng SiuilJ/s (of which it may ])ossibly prove a 

 variety), but decidedly more convex than specimens in that stage, 

 and when adult much more inecjuilateral than full grow n shells of 



u 



