316 PROCEEDINGS OF THE NATIONAL MUSEUM. vcl.xxiii. 



TELLINA (ELLIPTOTELLINAj PACIFICA new species. 

 (Plate III, fig. 9.) 



Shell small, oval, yellowish white, or more or less painted with rose- 

 color, especially" a spot near each end on the hinge margin; anterior 

 end longer, both ends rounded, and the valves rather convex; sculp- 

 ture of tine concentric regular grooves with wider interspaces, crossed 

 on the posterior end by deep angular radial grooves which serrate the 

 the valve margin and are separated by rib-like interspaces; these 

 grooves become less pronounced anteriorly, some of them attaining the 

 anterior third of the disk; interior polished, hinge well developed, 

 pallial sinus longer and less oblique than in Tellina {EUiptotcUimt) 

 americcma. Lon. 8, alt. 5, diam. 3 mm. 



Ty2)e.—^o. 96;>60, U.S.N.M.; dredged in Panama Bay, in 18 fath- 

 oms, sand, at station 2798, b}' the U. S. Fish Commission. 



This species differs from the Atlantic species by its much stronger 

 and more extended radial sculpture, and apparently also by its l>righter 

 colors and longer pallial sinus. 



TELLINA (PHYLLODINA) PRISTIPHORA new species. 

 (Plate IV, fig. 14.) 



Shell compressed, small, the right valve flatter, nearly equilateral; 

 the beaks compressed, acute, low, with the minute prodissoconch and 

 the nepionic shell polished and conspicuous; surface greenish white, 

 chalky, sculptured with evenly spaced elevated concentric lamellfe 

 over the posterior third of the shell, with much wider faintly striated 

 interspaces; in the right valve over the anterior two-thirds of the disk 

 the lamelhe are obsolete except on the dorsal margin, over the umbonal 

 fold they are con.spicuous, interrupted b}" the sulcus aboA'e it, and 

 rise into small squarish foliations on the posterior dorsal margin; on 

 the anterior dorsal margin the prominences are more like serrations; 

 on the left valve there are no lamellae on the disk, but the foliations 

 persist though less prominent; lunule and escutcheon developed 

 between the foliated keels, but very narrow and rather shallow; over 

 all the disk translucent subradial venulations are frequent; interior 

 with the hinge strongly developed, the pallial sinus narrow-, obliquely 

 ascending and entirely free from the pallial line below. Lon. 16.5, 

 alt. 9.5, diam. 3 mm. Another specimen, the valve figured, reaches 

 a length of 20 mm. 



Ty2)e. — No. 108575, U.S.N.M.; dredged near La Paz, Lower Cali- 

 fornia, in 26i fathoms, by the U. S. Fish Commis.sion at Station 2823. 



This is an elegantlv sculptured shell, with rather remarkable char- 

 acters, entireh" different from an}- other species on the coast now 

 known. 



