26 



Inhabits Panama. Col. Jewell. 



There is no species figured in Sowerby's Thesaurus, nor de- 

 scribed by Prof. Adams, which bears any near resemblance to this. 

 It is remarkable for its symmetrical form and great simplicity. 



TELLINA GEMMA (PI. XVI. Fig. 5.) 



T. parva, inequilateralis, transversa, ovato-triangularis, striis rotundatis con- 

 centricis ordinatis insculpta, rosea, albido vix radiata ; latere antico semiovali, 

 superne acute rotundato ; latere postico breviore flexuoso, sub-triangulari ; 

 flexurd valde acuta ; margine ventral! postice incurve ; intus vivide rosea. 



Shell very small, inequilateral, transverse, triangular elliptic, 

 rather solid, sculptured with crowded, rounded, concentric strise, 

 which become somewhat lamellar posteriorly ; rose-colored, with a 

 few delicate radiating white pencils ; apex about one fifth behind 

 the middle ; anterior part semi-oval, the dorsal outline rectilinear and 

 the extremity more abruptly rounded above than below ; posterior 

 portion subtriangular, flexuous, the dorsal margin somewhat con- 

 vex, tip truncate ; the submarginal fold well marked, and defined 

 by a sharp angular ridge on the right valve ; ventral margin in- 

 curved posteriorly ; interior bright rose red. 



Diameters, longitudinal, three fifths of an inch ; vertical three 

 tenths of an inch ; transverse three twentieths of an inch. 



Inhabits San Juan. Lieut. Green. 



The species which it resembles somewhat in form and color are 

 T. distorta, rhomboidea, and more especially T. scalpellum, which 

 is pellucid, shining, and nearly destitute of flexure. 



TELLINA (STRIGILLA) FUCATA (PL XVI. Fig. 4.) 

 T. (Strigilla) fucata, Gould; Proc. B. S. N. H. Nov. 1851. IV. 91. 



T. lenticularis, rotundata, ovato-trigona. T. carnarice simillima, albida, rosa- 

 ceo zonata, sulcis ad declivitates umbonales angulatis arata; intus omnino 

 miniata. 



Shell of a subcircular or ovate trigonal lenticular form, inequi- 

 lateral, whitish, or roseate zoned and tipped with color more intense, 

 and with a pale ray on the anterior slope in the darker specimens ; 

 the surface furrowed with oblique stria3, flexed at nearly right angles 

 on each of the umbonal slopes ; interior deep carmine red through- 

 out. 



