NO. 1210. SYNOPSIS OF NORTH AMERICAN TELLINID.E—DALL. 317 



TELLINA (EURYTELLINA) LEUCOGONIA new species. 



(Plate IV, fig. 5.) 



Shell brilHantl}' polished, rosy in darker or lighter concentric zones, 

 suffused with light 3'ellowish brown, the dorsal margin and umbones 

 white; valves subequilateral, compressed, the anterior end slightly 

 longer; surface smooth near the beaks, but in the adult nearer the 

 margin, especially in front, with a series of fine, concentric, rather 

 distant, evenly spaced grooves, which near the basal middle of the 

 disk are slightly out of harmony with the incremental lines; and on 

 the posterior half of the shell are obsolete; a faint ridge extends from 

 the umbo to the posterior angle of the valves; the space between this 

 ridge is sculptured with concentric stri«, the surface slightly rippled 

 at equal distances, the ripples stronger on the right valve; hinge nor- 

 mal; pallial sinus large, touching the anterior adductor scar and 

 wholly confluent below, the elevated internal ray strong. Lon. 2-i, 

 alt. 19, diam. 6 mm. 



7]//>e.— No. 102182, U.S.N.M., from the Gulf of California, Stearns 

 collection. 



This handsome shell, under a magnifier in a good light, shows 

 extremeh^ fine radial strite somewhat irregularly distributed, 



TELLINA (MOERELLA) MEROPSIS new species. 

 (Plate III, fig. 1.) 



Shell small, white, solid, subequilateral, rather swollen, slightly 

 flexed behind, with a rather bluntly pointed posterior end; surface 

 finel}' concentricall}^ closely striate, with obscure radial striulations 

 and a papery periostracum, which sometimes has an iridescent effect 

 and is often dehiscent; beaks low and pointed; interior white, some- 

 times with a pale yellow suffusion; hinge normal, the left anterior 

 lateral small but distinct; pallial sinus large, separated from the ante- 

 rior adductor scar only b}" the feeble slightly elevated va.y. Lon. 15, 

 alt. 11.5, diam. i]A mm. 



Types.— ^o. 123110, U.S.N.M., San Diego, California: Miss 

 Shepard. 



This quite abundant little shell was confounded with TeUina gouldil 

 Hanley, a West Indian species, bv Carpenter, and has been called by 

 that name b}^ most Californian collectors. 



It recalls the Tellina mera 2in(\. 2>romera rather than the genuine Tel- 

 lina (joiddi)., which is compressed and polished. 



TELLINA (MOERELLA) AMIANTA new species. 



(Plate III, fig. 12.) 



Shell elongated, rather solid, white, the anterior end produced, 

 rounded, the posterior shorter, obliquely truncate, rather pointed; 



