280 ANNALS NEW YORK ACADEMY OF SCIENCES 



small and moderate sized stocklike intrusives. The mineral resources of 

 the district are not large. About 100 ounces of gold are panned 

 annually from the rivers in the vicinity of Corozal. Gold quartz veins 

 have been worked in the hills south of Corozal, but without success. In 

 the barrio Pasto, southwest of Morovia, several copper prospects have been 

 slightly explored. 



Dr. Reeds stated that his report was one of progress ; that he was pre- 

 pared at this time to make only a preliminary statement concerning the 

 fossil faunas of Porto Eico, and that his remarks this evening would be 

 confined to the specimens which he and Mr. P. B. Hill had collected in 

 1915 from the younger series. A report on the fossil faunas from the 

 older series, together with a more complete statement of the fossils from 

 the younger series, would appear at a later date. The many hundred 

 of specimens collected have been washed, sorted and grouped as to classes, 

 and with the assistance of Dr. Anna I. Jonas preliminary identifications 

 of the specimens have been made. The most common groups of fossils 

 in the collection are Foraminifera, Echinodermata, Pelecypoda and Gas- 

 tropoda. Of the forty-one species listed twenty-one are Eocene and 

 twenty Oligocene. The Eocene forms are as follows : 



Foraminifera, no species 



Echinodermata — Eocene 



Linthia alabamensis Clark, Mldwaj^an. 

 Scutella mississippiensis Twitchell, Claibomian 



Hemipata suhrostratus Clark ~] 



Macropneustes mortoni Conrad I Jacksoniau 



ScMzaster arminger Clark J ' 



Pelecj'pods — Eocene 



CrasatelUtes aquianus Clark, Chichasawan 



Lucina pandata Conrad ^ 



Ostrea alabamensis Lea I 



Ostrea compresirostra Say l.Claibornian 



Ostrea divaricata Lea | 



Ostrea sellwformis Conrad j 



Lucina whitei Clark } 



VJacksonian 

 Venus sp ( 



Gastropods — Eocene 



Fasciolaria hercules Whitfield 1 



Fasciolaria elevata I 



„ , „ l-Jacksonian 



Fulgar sp ? ( 



Odostomia turricula I 



