347 St. Maurice and Claiborne Pei^ecypoda 247 



PI.ATE 46 



Figure , Page 



I, 2. Mcretrix cornelli Harris, 59 mm. ; Claiborne 144 



Notice narrowness of lunule and lack of in-rolling of beak 

 in comparison with fig. 6, pi. 45. 



3-5. Meretrix poulsoni Conrad, Claiborne 144 



Fig. 3, 44 mm. 



4 a, 5, 48 mm. 



6. "■ Venus vespertina" Con. Copy of type specimen, 12 mm 144 



Type probably lost. Western Texas. 



7. Meretrix subcrassa Lea, 29 mm. ; Claiborne 149 



Copy from Lea's figure. Phila. Acad. 



8. Meretrix ''discoidalis'' Q.onxz.^, 2^ mm.. (Copy). Phila. Acad. 146 

 9, 10. M. trigoriiata, var. winnensis, n. var, Winn Parish, La 147 



Fig. 9, 32 mm. 



10,17 " Trigonal with strongly developed radiating 

 lines, margin crenulate. 

 11-13. The .same, very much inflated, smooth form. 

 Fig. II, 29 mm. 

 12, 26 " 



