9290 Rk. T. Hill—Outlying Areas of the Comanche 
agree with Prof. Cragin’s conclusions on the age and posi- 
tion of the Cheyenne sandstone and Belvidere shales, which he 
referred to the Neocomian in general and to the Trinity and 
Fredericksburg divisions of the Comanche series in Texas and 
Arkansas in particular. It is difficult to find a basis for Prof. 
Cragin’s conclusions in the paleontology testimony he himself 
has presented, as will now be shown. 
An analysis of the species at various times reported by Prof. 
Cragin, from the Belvidere shales, shows the following well- 
known species peculiar to the greater divisions of the Creta- 
ceous in other regions of the United States. 
Ripley, uppermost Cretaceous of Atlantic coastal region : 
Neithea quinquacostata Sow. Modiola burlingtonensis Whit- 
Anomia tellinoides Meek. field. 
A. argentaria Morton. Idonearca tippana Conrad. 
Gryphea bryani Gabb. I. vulgaris Conrad. 
Liopistha protexta Conrad. 
Eight species. 
Montana division (western equivalent of Ripley of Atlantic 
coast) : 
Cyprina ovata M. & H. Ostrea anomioides Meek. 
Two species. 
Colorado Group (middle division of Upper Cretaceous) : 
Ostrea diluviana? Lam. Austin Cyprimeria crassa Benton (prob- 
Chalk. ably Montana) New Mexico. 
Plicatula arenaria. | 
Three species. 
Dakota Group : 
Cardium kansasense Meek, Salina, Kansas. 
One species. 
Washita division of the main area of the Comanche series: 
Gryphza forniculata White. Cardium hillanum Sow. (i. e. tex- 
Gryphea pitcheri Mort. anum Conrad). 
Exogyra flabellata i. e. texana. Corbula crassicostata Cragin. 
Neithea occidentalis Conrad. Pholodomya sancti sabe Roemer 
Nucula catherina Cragin. Turritella marnochii White. 
Inoceramus comancheana Cragin. A. acutocarinatus Shum., i. e. 
Trigonia emoryii Conrad. peruvianus de Buch. — 
Twelve species. 
Species common to Fredericksburg and Washita divisions: 
A. peruvianus von Buch. 
One species. 
