154 
Transactions Texas Academy of Science. 
Hill^ Egbert T. 
Contents: Introduotion. The Comanche Series or Lower Cretaceous 
Formation — The Shoal Creek (Vola) Limestone Fauna: Tecten (Vola?) 
iKoemeri^ sp. nov. ; Pterocera Shumardi, sp. nov. ; Crioceras? ( Ancyloceras) 
Texanus, sp. nov. ^ 
214. 
A Preliminary Annotated Check List of the Cretaceous Inverte- 
brate Fossils of Texas, accompanied by a short description of the 
Lithology and Stratigraphy of the System. 
Geol. Surv. of Texas, Bulletin No. 4, pp. xxxi, 57. Austin, 
1889. 
Contents: Letter of Transrpittal hy E. T. Dumhle, State Geologist. 
Introduction., Preliminary iNotes upon the Cretaceous System of the 
Texas Legion: Present State of Knowledge of the Texas Cretaceous, Table 
showing Theoretical Relation of the Cretaceous System of Texas to other 
Cretaceous Locks of the United States, east of the Sierras — ^1890, Explana- 
tion of the Nomenclature in this Paper. 
A Brief Deserij^tion of the Stratigraphy and Locks of the Cretaceous 
Series of Texas, based principally upon a Preliminary Section along the 
Colorado Liver from near ISmithwick Mills to Webberville. 
Progress iSection illustrating the Cretaceous System of Texas as inves- 
tigated to January 1, 1890. 
The Lower or Comanche Series (Colorado Section.) A. — ^The Trinity 
'Division. B. — 'The 'Fredericksburg Division: The B.a3al Beds; Comanche 
Leak Subdivision: The Caprina Chalk and Chalky Limestone Subdivision. 
C. — ^^The iWashita Division: The Flagstones; The Upper Caprotina Lime- 
stone, or Austin Marble; The Washita or Fort Worth Limestone; The 
Exogyra Arietina Clays; The Shoal Creek Limestone; The Denison Beds. 
The Stratigraphy of the Comanche Series in general. 
The Upper or Black Prairie Series: The Lower Cross Timbers Sands; 
The Eagle Ford Shales; The Austin-Dallas Chalk, or White Lock; The 
'Exogyra Ponderosa Marls. General Conclusions on the Upper Cretaceous 
Series. 
Annotated Check List. Tabular View of the Stratigraphic Oocurrence 
of the Invertebrate Fossils of the Cretaceous Formations of Texas. List 
of Faunas. 'Leferenee Bibliography. 
Noticed in Amer. Jour, of Sci., Ill, Vol. XXXIX, p. 521, June, 1890. 
215. , and Pexrose, E. A. F., Jr. 
Eelatioii of the Uppermost Cretaceous Beds of the Eastern and 
Southern United States, by EobeVt T. Hill; and the Tertiary Cre- 
taceous Parting of Arkansas and Texas, by Eobert T. Hill and E. 
A. F. Penrose, Jr. 
Amer. Jour, of Science, III, 'Vol. XXXVIII, pp. 468-473. 
New Haven, Dec., 1889. 
The Cretaceous outcrop at Arkadelphia, Ark. — A Cretaceous island. To 
the southwest the areal exposures become niore extensive until in Central 
