A FEW MID-UPPER EOCENE FOSSILS FROM THE 

 CAROLINAS'AND TEXAS. 



G. D. HARRIS 



The following specimens from isolated localities whose geol- 

 ogic horizons are for the most part not ver}- definiteh^ established 

 seem worth}- of description and illustration. 



Venericardia eutawcolens, PI. 2. Fig. 1,2 



Specific charaderizatioiu — Size and general form as indicated 

 b}' the figures and explanations ; rather inflated ; substance of 

 the shell rather thin, showing on molds of the interior the posi- 

 tion of the ribbing ; ribs about 28-30 in number, compound, tri- 

 partite, the middle part strongest, highest and most crenulate or 

 spinose ; interspaces from ^ to ^ the width of the compound 

 ribs; ribs about the umbonal region simple, finely crenulate, dis- 

 tinctly so just in front of the lunule which is small, deepl}' sunken- 



The ornamentation, or ribbing of this form differs materialh' 

 from that of an}- other species of the genus with which we are ac- 

 quainted. In the usual alticostata type of ribbing there is a central 

 keel superimpo.sed upon a broader foundation, giving a terraced 

 structure on each side. Here there are actually three raised, 

 radiating, nodose, strong riblets upon each rib, the center one 

 being somewhat the strongest, however. This reminds one of 

 the exterior markings on .some Pectens. 



The ribs in Conrad's l\ blandingi are of the very carinate 

 ''wilcoxensis" t}-pe and not of the trilinear .style of our new form. 

 The ".side-ribs" in pcrantiqiia as figured by Whitfield in Mon. U. 



