278 



T. testa oblongo-ovali, insequivalvi, compressa, teimi, subnitida, 

 inaequilaterali, pallide aiirantio-roscfi, radiis subroseis ornata; sub- 

 Igevigata^ concentrice exiliter striolata, valvula autem altera sulcis 

 remotis concentricis postice exarata; margine ventrali medio sub- 

 recto ; dorsali antice convexiusculo paululumque declivi, postice 

 siibrecto et subdeclivi ; latere postico brevi, angulato ; extremitate 

 antica rotimdato-obtusa ; ligamento prominulo ; costa uinbonali 

 subinconspicua ; dentibiis lateralibus distinctis, subsequidistan- 

 tibus. 



Oblong-oval, iuequivalve, compressed, tliin, 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 straightish in the midcUe ; dorsal slightly con- 

 vex and very little 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 Mars (pi. Ixii. f. 180.) Hanley. 



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

 intusque rosea, concentrice et confertissime striata, lineisque obso- 

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

 que convexo, postice inciu-vato ; dorsah antice convexiusculo et vix 

 paululum declivi, postice prope nates obtusas excavato deinde con- 

 vexo et subdeclivi; extremitate antica rotundata; latere postico 

 obtuse acuminato, subrostrato ; flexura costaque umbonali valde 

 conspicuis ; ligamento infosso ; dente lateraH quamplurimum ap- 

 proximato. 



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

 witliin 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 all 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 tooth as approximate as possible. 



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

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



