M AKVL AM) (;i:()i.(m;ic \i, siit\'i:v 1()T 



Section im-.konidia dai.i.. 



'I'i;ij,i.\ A ( l'i;i;()N 11)1 \ ?) w i i.li a.msi Chirk. 



I 'late XXXIII. Figs. 2, 2a. 



TcUinii ii'illi<nnsi V\\i\-\<, IS'.)."., Jdlins llupkins Univ. Circ, vol. xv, [). .")i 

 Tellina wilUuinsi Clark, ISlMi, Bull. 141, U. S. Oeol. Survey, p. 76, pi. .w, figs. 3a, 3ft. 

 Tclliita snbtriuHfinldrtu Harris, 1S'.»7, Bull. Amer. Pal., No. i), p. 73. (In part). 

 TtUiiiii (Pcronklia?) wiUitDnni Dull, I'.tOO, Trans. Wasi'ier Free Inst. Sci., vol. iii, 

 pt. V, p. 1016. 



Dcscriplinii. — '■ Slii'll .small, I'atlicr solid, not strongly inequilateral; 

 posterior shoi'ter; surface ornamented witii elevated, close-set ridges or 

 lanu'llae, increasing in size toward the basal margin; posteriorly suban- 

 gulated; two cardinal teeth, posterior bifid; lateral teeth strongly devel- 

 oped; pallial sinns deep." Clark, 1896. 



The qnestion of the identity of this form with Tellina suhtriaugularis 

 Aldrich of the Alabama Eocene has been carefully considered. Dr. 

 Dall ' agrees with ns that they are distinct, but Professor Harris ' thinks 

 they are the same. T. ivilliamsi is more elongate and more strongly 

 sculptured. 



Length, 12 mm., height, 7 mm. 



Occurrence. — Xaxjemoy Foematiox. Popes Creek, 2-J- miles above 

 Popes Creek, Woodstock. Aqijia Foematiox. Potomac Creek. 



Collection. — j\Iar3dand Geological Survey, Johns Hopkins University. 



Tellixa (Peeoxidia) papyeia (?) Conrad. 



{?) Tellina papyria Conrad, 18.33, Fossil Shells of the Tertiary, No. -1, p. 41 (fig'd. 

 Amer. Jour. Sci., vol. i, 1846, pi. iv, lig. 7). 



A single specimen has been found which belongs to neither of the pre- 

 ceding species, and which has the outline of T. papyria. The shell is 

 very thin and has almost disappeared. 



Length, 35 mm.; height, 26 mm. 



Occurrence. — Aquia Poemation. Fort Washington. 



Collection. — Maryland Geological Survey. 



1 Trans. Wagner Free Inst. Sci., vol. iii, pt. v, 1900, p. 1016. 

 «Bull. Amer. Pal., Xo. 9, 1897, p. 73. 



