GEOLOGY AND PALEONTOLOGY OF THE CANAL ZONE. 



209 



very interesting specimens at station 6256, which is 1J miles south 



of Miraflores. The following is a list of the species: 



$ 

 Species of corals from the Emperador limestone. 





Empire 

 quarries. 



Station 

 60246. 



Station 

 6256. 



Anguilla. 



Antigua. 





X 

 X 

 X 

 X 

 X 

 X 



X 





X 























X 





























X 







X 





X 

 X 

 X 

 X 

 X 



X 



X 

 X 









































X 

 X 







X 





X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 







X 



























X 

 X 

 X 

 X 



























X 

























X 











X 



X 

















X 



X 











Of 26 species from the Emperador limestone, 6 have been identified 

 in the Antigua formation and 9 in the Anguilla formation, but it 

 is probable that the number of species common to the Emperador 

 limestone and the Anguilla formation will be somewhat increased. 

 The Emperador limestone is of nearly the same horizon as the An- 

 guilla formation. Additional evidence favoring this opinion will be 

 adduced on subsequent pages. 



ANGUILLA FORMATION.! 



This name is proposed for the coralliferous limestone and argilla- 

 ceous marls of Anguilla. The type-locality is on the south and west 

 sides of Crocus Bay, where it is exposed to a thickness of about 200 

 feet. The fauna has been monographically described, and the account 

 of it will be published in a forthcoming volume of the Carnegie Institu- 

 tion of Washington. The following species of corals from it are 

 considered in the present paper: 



1 The principal literature is as follows: 



Cleve, P. T., On the geology of the northeastern West India Islands, K. svenska Vet.-Akad. Handl., 

 vol. 9, No. 12, p. 22, 1872. 

 Vaughan, T. W., see references in footnote, p. 193. 



