168 University of Texas Bulletin 



PLATE 10. 



Corbula, Nucula, Area, Protocardia; Neritina, Nerita, Natica, Lunatia, Plate 10 



Trochus, Anchura, Cinulia, Globiconcha, Turritella 



Figures 1-4. Corbula wenoeiuU n. sp Page 127 



Weno shale, rare. Fig. 4, type. All individuals x 1.5. Locality: 601, pit of 

 brickyards, one and three-fourths miles southeast of Gainesville, Texas. 



Figure 5. Corbula littoralis n. sp : Page 133 



Weno shale, rare. Fig. 5, type individual, x 1.5. Locality: 601, pit of brick- 

 yards, one and three-fourths miles southeast of Gainesville, Texas. 



Figure 6. Area wasbitaensi* n. sp Page 121 



Abundant, Pawpaw clay; rare, Grayson, Den ton and Duck Creek formations, clay 

 facies and more rare in the marl facies. Fig. 6, type individual, x 1.5. 

 Locality: 714, one-fourth mile south of the International and Great Northern 

 Railway bridge across Sycamore Creek, near Fort Worth, Texas, at the base 

 of the Pawpaw clay. 



Figures 7-9. Corbula basiniformis n. sp Page 130 



Abundant, Weno shale. Locality: 604, cut of St. Louis and San Francisco Rail- 

 way, one mile north of Union Station, Denison, Texas. (See PI. 9, figs. 7-24.) 

 x 1.5. 



Figures 10111. Nucula wenoentis n. sp Page 120 



Rare, Weno shale. Fig. 10, type individual, x 1.5. Fig. 11, x 1.5. Locality: 601, 

 pit of brickyards, one and three-fourths miles southeast of Gainesville, Texas. 



Figures 12-16, 19-20. Nucula nokonu n. sp Page 118 



Occasional, Weno shale, x 1.5. Locality: 604, near Denison, Texas. Type, Fig. 

 19, x 1.5, same locality. 



Figures 21-26, 32. Protocardia sp. aff. multistriata (Shumard) Page 126 



Abundant, Weno ironstone and shale, x 1. Locality: 601, near Gainesville, Texas. 



Figure 27. Neritina sp Page 139 



Rare, middle Weno shale (buff marl). Locality: 601, near Gainesville, Texas. 

 xl.5. 



Figure 28. Nerita sp Page 139 



Rare, middle Weno shale. Locality: 601, near Gainesville, Texas, x 1.5. 



Figure 29. Natica sp Page 140 



Rare, ironstone and upper Weno shale. Locality: 601, near Gainesville, Texas. 



