1 62 BuivIvETiN 31 163 



known species, yet difficult of definite determination. The spec- 

 imens herewith shown (figs. 13, 14) seem to be very much like 

 cy7ioglossuIa. 



Types.— V. S. Nat. Mus. 



Horizon. — Claiborne Eocene. 



Specimens figtcred. — U. S. Nat. Mus. 



Locality. — Gopher Hill, Wash. Co., Ala. 



Tellina (Angulus) prolenta Aldrich, PI. 49, Fig. 17 



For Aldrich's original description, see these Bulletins, vol. 

 5, p. 4, pi. I, fig. 5. 



This author seems to have gotten the ends of the shell re- 

 versed in his description. 



We have no specimen of this species. Aldrich's type in the 

 Aldrich Collection (Johns Hopkins Univ.?) 



Tellina (Angulus) entsenia Dall, PI. 50, Fig. 2 



71 [Afigtilus] entcefiia Dall, Trans. Wag., Ill, 1900, p. 1016, pi. 46, 

 fig. 2. 



DalPs original description. — Shell small, rather compressed, solid, 

 elongate, very inequilateral ; beaks low, surface polished, sculptured with 

 faint, little elevated, somewhat irregular concentric lines, which at about 

 the posterior third become suddenly stronger and more prominent, and on 

 the posterior dorsal slope become about half as numerous, somewhat irreg- 

 ular, and still more elevated ; hinge normal, nymph for the ligament short 

 and prominent ; pallial sinus short, rounded in front, reaching a little be- 

 fore the middle of the valve and below about half confluent with the pallial 

 line ; a faint ray behind the anterior adductor scar. Long. 9, alt. 4, semidi- 

 ameter, 0.8 mm. 



Nothing like this interesting little shell has been described from this 

 horizon. Two left valves were obtained. The prominence of the nymph is a 

 general characteristic of the subgenus Angulus, though I note in several 

 European publications this feature does not appear to be understood, and 

 there has been a tendency to refer such forms to Psanimobia, apparently on 

 this character alone. 



Eocene of the Claiborne sands at Claiborne, Ala. 



N. var. equator, PI . 50, Fig. i 



I^arger than the typical form, with nearly equal poste rior 



