incr^ oix^ala and irrej^ul, -^^ l.^^u, u •■'o.i: u.^cr' '.u^j, :.:jj:e 



r.ronounoed toward the mar^jins; hiii^'e edonbul , ' , 'er 

 ':'. ^e nar'^in, a short m^o-ohore 'rciecti:: 



•" ''he shell; rausole Bears decidedly,- n:L.e(;u.-x, -i- 



larger; palMal ainiTC olocciure. 



Dl?-Bnsions .- Length, 19 cim. ; alt., 7.5 nrn. ; . ...i '. ., 

 ? . 5 m. 



3enia.r',:b .- Althonffh the speciniens at hand are rnxich r 



than the t;;roe material, the^/ are Gnaller, thijriner . ore 



elon»-sted than the 'r'^.ecent eastand v;est coast 2* ov-^- "■-- --orerbT,' (1) 

 Ihe Pliocene and Recent G. cuneiforr'n.s Spengler ( : 



(l). Proc. Zool. Soc. London for 18"-1, -o. "1; . .ilu^, , iJe:" "". 

 Oat. Rec. Sh., p. 10, pi. 9, fig. 42, 184r:. 



(2). ITova Acta Soc. Hafn. vol. S, p. 170, figs. -1-11, l':Ga. 



and he- vie r, more Islmitl^' rounded posteriorly/, vi th a more a'brupt 

 gape . 



i^he 'Tampa rotimda is reprecented \>:^' "burrows c " , ':he xiK- 

 ured speci-en heing from the Ohipola marl. 



Occurrence .- Unper Oli.r^-ocene : ? Tampa ai] , Florida 



(Dall, ISOO, 1915); Ohipola ■ arl, Florida (Dsll, 1090, 1915). 



Lower ;"iocene : Bowden hedc, :3ov.-den. Jama:'- , , 191^'). 



