20 THE MESOZOIC ECHINODERMATA OF UNITED STATES. [hull. 97. 



White, C. A. Contributiousto the Paleontology of Brazil; comprising destriptions 

 of Cretaceous Invertebrate Fossils, mainly from the provinces of Sergipe, 

 Pernambuco, Para, and Bahia. Archivos do Museu Nacional do Kio de 

 Janeiro, vol. vii, pp. 1-273, Pis. i-xxvii. 



1890. 



COTTEAU, M. Note sur quelques fichinides du terrain cr6tac6 du Mexique. Geol. 

 See. France Bull, in, 18, pp. 292-299, pis. 1, 2. 



1891. 



Clark, Wm. B. A Revision of the Cretaceous Echinoidea of North America. Johns 

 Hopkins University Circulars, No. 87, pp. 75-77. 



1892. 



Gregoky, J. W. The relations of the Americaii and European Echinoid faunas. 

 Geol. Soc. America Bull., vol. 3, pp. 101-108. 



