134 BULLETIN OF THE 



off Sand Key, 30 fms.; Station 36, 84 fms.; Station 9, 111 fms.; Station 5, 

 229 fins. ; Station 2, 805 fins. 



It is more produced anteriorly, more inequilateral, and more inflated than 

 S. tenuis, and has no radiating striae ; it is shorter, more oblique, more in- 

 flated, and has a much larger and deeper pallial sinus than Philippi's "Ery- 

 cina" similis, which is a Calabrian fossil. It is very similar in form to 

 Hanley's figure of Tellina Gouldii in the Thesaurus. It has, as will be noted, 

 a remarkable range in depth. 



Tellina Antoni Philippi. 

 Tellina Antoni Philippi, Hanley, Thes. Conch., p. 224, PL LVIII. fig. 74, 1846. 

 Obtained by the Bache, west of Florida, in 19 fms. 



Tellina plectrum (?) Hanley. 



Tellina plectrum Hanley, P. Z. S., 1845 ; Thes. Conch., p. 265, PL LXI. fig. 177. 



A single valve, resembling Hanley's figure in most features, but with an 

 outline a little more like that of Tellina p> rplexa Hanley (Manila) was obtained 

 in the Yucatan Strait at a depth of 64<) fathoms. To determine positively to 

 what species it belongs would require more material. It may have been 

 washed from shallower water, or disgorged by a fish, and not properly belong 

 in the deeps at all. It is, however, quite fresh, though a little broken. 



Tellina Gouldii Han-ley. 



Tellina Gouldii Hanley, Thes. Conch., p. 272, PL LVI. fig. 26, 1846. 



Tellina cuneata D'Orbigny, Sagra, Moll. Cub., II. p. 256, Tab. XXVI. fig. 23, 1853. 



Yucatan Strait, 640 fms. 



Two valves only were obtained. 



Tellina sybaritica n. s. 



Shell small, solid, shining with a silky Lustre, deep rose-pink, darkest at the 

 beaks, somewhat disposed in lighter and darker concentric waves; elongated, 

 donaciform, rather inflated, slightly posteriorly twisted t<> the right ; beaks 

 nearest the posterior end, not prominent ; cardinal tooth in left valve Btrong, 



bifid ; lateral teeth short, Btrong, rather close to the cardinal ; pallial sinus 

 profound, reaching below and nearly as far forward as the anterior muscular 

 scar; sculpture of concentric deep crowded grooves separated by narrow uni- 

 form rounded ridges, the fineness and uniformity of which give rise to the 

 silky lustre ; a strong not very sharp carina extends backward from the 

 beaks, forming a short square-pointed rostrum, behind which, in the hit 



