268 REPORT UNITED STATES GEOLOGICAL SURVEY. 



11. Trapizium. Undetermined species. 



12. Idonearca shumard i Meek & Hay den? Examples all very small. 



13. Callista pcllucida Meek & Hayden. 



14. Teredo ? Separated tubes only. 



15. Anisomyon alveolus Meek & Hayden. 



1(5. Margarita . Undetermined species. Perhaps new. 



17. Lunatia . Undetermined species. 



18. TurriteUa . Undetermined species. 



19. Aporrhals biangulata Meek & Hayden. 



20. Spironema . Undetermined species. Perhaps new. 



21. Pyramidella . Undetermined species. 



22. TurboniUa (OJiemnitsia f) . Undetermined species. 



23. Fasciolaria (Piestocheilus) . Undetermined species. 



24. Bacultes ovatus Say. 



25. Scaphites nodosus Owen ? 



26. Placeniticeras placenta Dekay. 



27. Serpida . Undetermined species. 



28. Undetermined Crustacean. Probably a Brachyuran. 



The specimens of this collection have had their specific and other 

 characters much obscured by compression, and by calcareous encrusta- 

 tion. 



LIST OP CRETACEOUS FOSSILS SENT BY PROF. B. P. MUDGE, PROM 



DENNISON, TEXAS. 



1. Ostrea quadriplicata Shumard. 



2. Ostrea (Alectryonia) oellaplicata Shumard. 



3. Gryphcm pitcheri Morton. 



4. Weithea texana Ecemer. 



5. Trigonia emoryi Conrad. 



6. TurriteUa . Undetermined species. 



7. Auchura (Drepanocheilus) mudgeanus White. This species was found 



in the form of natural casts, together with those of several other 

 undetermined species, in a mass of red hematite. The mass also 

 contained partial casts of two or three of the species of this list, 

 showing that the hematits came from the same formation. It is 

 described and figured in another part of this volume. 



LIST OP CRETACEOUS POSSILS SENT BY MR. G. W. MARNOCH, FROM 

 NEAR HELOTES, BEXAR COUNTY, TEXAS. 



1. Orbitulites texanus Rcemer.* 



2. Astroeoenia sancta-sabce Poemer. 



3. Toxaster texanus Rcemer. 



4. Toxaster elegans Shumard. 



5. Diadema texanum Roemer. 



6. Oyphosoma texana Rcemer. 



7. Cidaris hemigranosus Shumard. 



8. Hippurites texanus Rcemer. 



9. Radiolites austinensis Rcemer. 



10. Terebratula wacoensis Rcemer. 



11. Ostrea subspatula Lyell & Sowerby. 



12. Ostrea congesta Conrad. 



13. Ostrea (Alectryonia) carinata Lamarck? 



*Tlie nomenclature of the respective authors is here used without any attempt at 

 rectification. 



