/I. -) rr _ 



TEIIIITA (AITtULUS) G01:IDA n. sp. 



Description .- Shell small, el""~'-^e, luiiiomily inflated, 

 decidedlj^ inequilateral; anterior end broadly roiuide'"' , posterior 

 end abruptly rounded below; antero-dorsal nB-rf'ln long, slightly 

 convex, sloii.-' untl;; ; posteriori; the "mar,p;in sloping more 

 steeply, base descending to'vvard the anterior end; umbo lo?;, sit- 

 uated at about -he -oosterior third; posterior carina scarcely diff- 

 erentiate" fro.„ tiifj ;' uiiural conve^.ity of the shell, the posterior 

 slope rounded; external sculpture of fine concentric striae, be- 

 coming slightly coarser -oosteriorly; pal- ial sinus obscure. 



Dimensions .- length, 7.5 mm.; alt., 4.5 -,.m. ; semidiam. , 

 1.7 mm . 



I^emarks .- -his species is re^oresented by s single left 

 valve. It appears to find ius .;iace in the section Angulus s. s. 

 near pharcida . ^rom that species it differs by being higher, more 

 convex, more -oroduced "oos tcriorly, ■ ith a less nronoui'.ced r)ost- 

 erior carina and vxithout the depressed, area in front of the carina' 



Occurrence.- lower J.'io cene : 3-.v7den beds, 'Bowden, Ja'nsiea. 



