42 



all dehiscent, very coriaceous, 2 cm. in length by 1.3 cm. in 

 maximum width; containing a single, large, elliptical, compressed 

 seed, I.I cm. long and 8 mm. in maximum width. 



Fig. I. Fossil and Recent pods of Copaifera. i. Copaifera yegtiana sp. nov. 

 Middle Eocene of Texas; 2. Copaifera Langsdorffii Desf. Brazil; 3. Copaifera 

 radobojana Unger, Miocene of Croatia; 4. Copaifera Kymeana Unger, Upper Oli- 

 gocene of Kumi; 5. Copaifera armissauensis Saporta, Upper Oligocene of France. 



The materials upon which this description is based were col- 

 lected by C. L. Baker from the hard brown clays of the Yegua 

 formation on Cedar Creek two miles south of the T. S. & E. R. R. 

 bridge and southwest of Lufkin in Angelina County, Texas. 

 The collection was small and the most perfect specimen is that 

 figured. I am indebted to Mr. E. T. Dumble, of the Southern 

 Pacific Company, for the opportunity of studying this and other 

 collections. 



The Yegua formation, which consists of several hundred feet 

 of littoral and palustrine deposits of lignitic clays and sands, was 

 differentiated by Dumble* in 1892. It forms the upper division 

 of the Claiborne Group in that state, and is of middle Eocene 

 age, that is to say, about the same age as the Green River beds 



* Durable, E. T., Rept. Geol. Surv. Texas, 1892: 148-154. 



