273 



T. testa oblongo-ovah, insequivalvi, compressa, tenui, subnitida, 

 insequilaterak, pahide aurantio-rosea, radiis subroseis ornata; sub- 

 lsevigata, concentrice exiliter striolata, valvula autem altera sulcis 

 remotis concentricis postice exarata ; margine ventrali medio sub- 

 recto ; dorsak antice convexiusculo paululumque declivi, postice 

 subrecto et subdeckvi ; latere postico brevi, angulato ; extrernitate 

 antica rotundato-obtusa ; ligamento prominulo ; costa umbonali 

 subinconspicna ; dentibus lateralibus distinctis, subsequidistan- 

 tibus. 



Oblong-oval, inequivalve, compressed, tlrin, not very glossy, in- 

 equilateral, of a very dekcate salmon-colour, with light pink rays ; 

 smootliish, being merely striolated concentrically, with a posterior 

 space grooved concentrically and distantly in one of the valves 

 only ; ventral edge straigktisk in tke middle ; dorsal slightly con- 

 vex and very kttle sloping in front, moderately sloping and nearly 

 straight behind; posterior side short and angulated; anterior 

 extremity obtusely rounded ; ligament moderately projecting ; fold 

 by no means conspicuous; lateral teeth distinct, and tolerably 

 equidistant. 



* * With a single anterior lateral tooth. 



Africa, (Dr. Bates). 



94. Tellina Maes (pi. lxii. f. 180.) Eanley. 



T. testa oblonga, solida, subcequilaterali, compressiuscula, extus 

 intusque rosea, concentrice et confertissime striata, lineisque obso- 

 letis radiatim impressa ; margine ventrak in medio subrecto, utrin- 

 que convexo, postice incm'vato ; dorsak antice convexiusculo et vix 

 paululum declivi, postice prope nates obtusas excavato deinde con- 

 vexo et subdeclivi ; extrernitate antica rotundata ; latere postico 

 obtuse acuminata, subrostrato ; flexura costaque umbonali valde 

 conspicuis ; ligamento infosso ; dente laterak quamplurimum ap- 

 proximato. 



Oblong, sokd, nearly equilateral, rather compressed, rose-coloured 

 within and without, decussated by very crowded concentric striae 

 and obsolete radiating lines ; ventral edge nearly straight in the 

 middle, convex at the sides, incurved posteriorly ; dorsal edge but 

 slightly convex and scarcely at aU sloping in front, posteriorly ex- 

 cavated near the obtuse beaks and then convex and moderately 

 sloping ; front extremity rounded ; posterior side subrostrated and 

 obtusely acuminated ; fold and flexure very conspicuous ; ligament 

 sunken ; lateral tootk as approximate as possible. 



Tke only specimen I have ever seen, (now in the possession of 

 Mr. Cuming,) is stated to have come from Guinea. 



