2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I42 



(1928) from collections made in Trinidad by H. G. Kugler and in 

 Venezuela by Kugler, Wiedenmayer, and Vonderschmitt. These col- 

 lections evidently were not exhaustive, for several of the species are 

 represented by a single fragment. One late-Eocene species, Oligopy- 

 giis nancei Cooke (1941a) was later obtained from Venezuela, and 

 Anisgard (1954) figures an unnamed species of Plagiobrissiis from 

 a deep well in Venezuela. 



The geology of Trinidad is discussed by Suter (i960) and by 

 Kugler (1956). The stratigraphy of Venezuela is also well known be- 

 cause of the many years of research by petroleum geologists. Their 

 results are summarized in a "Lexico estratigrafico de Venezuela" 

 (Schwarck Anglade, 1956), a book of 729 pages containing signed 

 articles on each geologic formation and ending with a bibliography of 

 several hundred titles of works on Venezuela, Trinidad, the West 

 Indies, and some of broader interest. 



The geologic names and the stratigraphic horizons assigned to the 

 species from Venezuela in the present report agree, for the most part, 

 with those found in the "Lexico." Because of my unfamiliarity with 

 the region I have had to depend chiefly on the formation names and 

 ages designated on the labels accompanying the fossils, without the 

 ability to evaluate them. As some of the fossils were collected many 

 years ago, it is quite likely that the stratigraphic data need revision. 



SPECIES OF EARLY CRETACEOUS AGE 



Seven species of Early Cretaceous age, six from some part of the 

 Albian, one from the Aptian, are here recorded from Venezuela. 

 Four of the genera and two of the species occur also in Colombia, 

 where Cooke (1955, p. 87) reports eight species believed to be of late 

 Albian age. Several species from both Venezuela and Colombia occur 

 also in the Comanche series of Texas (Cooke, 1946) or are repre- 

 sented there by very closely related forms. The species from Vene- 

 zuela are as follows : 



Tetrafjramma sp. 



Holectypus (Cacnholcclypus) planatus aponcnsis Cooke, n. subsp. 



Phylhbrissus stilianus Cooke, n. sp. 



Enallaster (Washitaster) bravoensis Bose? 



Pseudananchys sp. indet. 



Hemiaster sp. 



E piaster whitci Clark 



SPECIES OF PALEOCENE AGE 



The only echinoid thus far recognized as of Paleocene age in this 

 region is Phymosoma trinitensis Cooke, n. sp. As the name indicates. 



