r, ;-i p 



S^^tag■en^^s Gyraatoiea Dall. 



T r 



AOO^','. f '" ^TOIOA) VEITDRYESI Ball. 



Macoria ( Oy^-atoica ) vendr.yesi Dall, 1900, Trans. Warner "^ree Inst. 

 3oi., Priilaclelphia, vol. ", "■ . 3, p. IO06, pi. 46, 



•Ft (T -^ 



X J. ,^ • t.y . 



DcwO^ 1 j^ 1 ■-. .- "Sliell iuiii'vice, Li^iu, ^ie:;-aout;, rostrate, in- 

 equivalve, inequilateral, i?aping behind, moderately inflated, 

 anterior end full, rounded, shorter; posterior end long'er, recti- 

 linear a"bove, sinuoub below, oroduoe'' into an obliqaelj" trunosted 

 rostrum; beaks low, pustular, left valve slifhtlj- loss convex Ifchan 

 the right and a li-rle lonper, surfa-ce ooncentrieall^" irrep'alarly 

 undulated ex^e^jv ju the pOij!^f.rior doroal aroa, .,i-ieh is transverse- 

 ly striated; pallial sinus small, short, partly confluent belov/ 

 v;j th the pallial line. Lon. 7, sit. 4, dipm. " ran. 



"This species is cons_'-^eri;jl^ o-iuliLr \...i^a the recent !I. ori- 

 entalis Dall [1) snitillean , the concentric v;F.ve-li"e sculT)ture 



•;i). ?roc. U. 3. l^at. :,.:io., vol. 12, o, £73, pi. 10, fig. IS, 

 lo39. 



is finer and less broken, and the shell is relatively more inflat- 

 e''. The teeth are quite feeble and minate." (DpII, 1900). 



