140 University of Texas Bulletin 



White and A. haydeni White 1 in having a rounded, tabulated, externally 

 directed lip instead of an upturned sharply pointed one. It differs from 

 Anchura monilifera Gabb 2 found at Arivechi, Sonora, in the less elongate 

 form and greater apical angle, in the greater width of the aperture, and 

 in the tabulated lip. 



NATICA *p. 



PI. 10, fig. 29 



A small nacreous Natica is known from the ironstone layers of the Upper 

 Weno shale of the Red River region. It is preserved with the slightly 

 altered calcareous shell. Locality 601, pit of brickyards near Gainesville, 

 Texas. 



LUNATIA p. 

 PI. 10, fig. 38 



This Weno species has a nacreous preservation and occurs in both the 

 Upper Weno shale and the interspersed clay-ironstone seams. It is oc- 

 cosional in the ironstone heap thrown out of the brickyards pit near Gaines- 

 ville, Texas. 



GLOBICONCHA *p. 



PI. 10, fig. 41 



This large species is rare in the Red River region, and is known from 

 the clay-ironstone layers of the upper part of the Weno shale, in associa- 

 tion with Protocardia sp. aff. multristriata (Shumard), Turritella gray- 

 sonensis, Cinulia washitaensis, Gervilliopsis invaginata, Schloenbachia win- 

 toni, Cambarus ? sp. and other Upper Weno fossils. Locality, 601, near 

 Gainesville, Texas. 



TURRITELLA GRAYSONENSIS n. sp. 



PI. 10, fig. 43 



MEASUREMENTS : 



Type, greatest height ----------------------- 36.0 mm. 



Width of last volution _______________________ 11.5 mm. 



Section of last volution, height _______________ 7.5 mm. 



Section of last volution, width ________________ 7.0 mm. 



e, llth Ann. Kept., U. S. G. and G. S. Terr., 1879. 

 "Gabb, Geol. Surv. Cal., Pal. II, p. 262, pi. 35, fig. 7, 1869. 



