262 



T. testa T.pisifm'mi simiUima, pallidiore autem et margine ven- 

 trali magis arcuato ; striis obliquis^ fortioribuSj flexuosis, postice 

 bis terve in ziczac flexis ; ligamento minimoj 



Extremely like T. pisiformis, but paler aiid more arcuated at the 

 ventral margin ; the oblique striae are fiexuous and more deeply 

 impressed than in that species^ and at the posterior extremity se- 

 veral times change their direction at acute angles, thus forming 

 numerous zigzag hues ; the ligament is minute and not prominent. 



United States. 



73. Tellina FiMBRiATA (pi. Ix. f. 132.) KanUy, Zool. Proc. 

 1844. 



T. testa obovato-suborbiculari, solidi% convexa, impolita, intus 

 extusque Candida, striis concentricis confertissimis lamellosis fim- 

 briatis et hneis radiantibus confertis decussata ; margine ventrali 

 arcuato, postice sursum acclinato ; dorsali utrinque convexiusculo, 

 antice subdechvi, postice valde decli\a ; latere antico longiore, ro- 

 tundato ; extremitate postica brevi, angulata ; costa umbonali valde 

 conspicua; ligamento infosso; lunula distincta; dentibus latera- 

 libus subremotis, subsequidistantibus. 



Eounded-obovate, solid, convex, very inequilateral, dull wliite, 

 with extremely delicate crowded lamellar striae, which are fringed 

 by the intersection of radiating Hues ; one of the valves projecting 

 beyond the other at the beaks ; ventral margin arcuated and rising 

 posteriorly ; anterior side the longer and rounded, its dorsal edge 

 moderately convex and sloping ; posterior side short and angulated, 

 the ligamental edge strongly sloping and tolerably convex ; fold 

 very prominent; hgament sunken; a distant lanceolate lunule; 

 inside white ; lateral teeth rather remote and subequidistant. 



Mus. Cuming. 



74. Tellina decussata (pi. k. f. 184.) Lam., no. 45. ; Hani- 

 Des. Cat. p. 70. ; Encyc. Meth. t. 292. f. 2. ? 



T. testa suborbiculari, subsequilaterali, solida, convexa aut sub- 

 ventricosa, impolita, sordide alba, striis concentricis costellas radi- 

 antes decussantibus ; striis elevatis, confertissimis, tenuissimis; 

 costellis numerosis, paululum obsoletis ; margine ventrali arcuato ; 

 dorsah utrinque declivi, antice convexo, postice convexiusculo ; la- 

 tere antico rotimdato; postico obtuse angulato; ligamento infosso; 

 natibus prominuhs ; flexura costaque umbonah inconspicuis ; den- 

 tibus lateralibus magnis, antico propinquiore. 



Var. Testa majore, Candida; striis magis elevatis et minus con- 

 ertis ; margine dorsah postico elevatiore. 



