OLDER POTOMAC OF VIRGINIA AND MARYLAND. 559 



Celastrophyllum latifolium Fontaine. 



PL CXVI, Fig. 6. 



1889. Celastrophyllum latifolium Font.: Potomac Flora (Monogr. U. S. Geol. Surv., 

 Vol. XV), p. 306, pi. clxxii, figs. 3, 6; pi. clxxiii, figs. 13, 13a. 



This species was described in Monograph XV as quite common 

 at Belt and Covington streets, Baltimore. In the Covington and Clem- 

 ent streets collections, made by Mr. Bibbins, it is rather abundant, 

 being more so than C. obovatum. The specimens are subject to much 

 distortion, which has disguised their shape. The leaves vary a good 

 deal in size, some being much larger than others. In shape they are 

 mostly broadly elliptical. Twelve specimens were obtained from Cov- 

 ington and Clement streets. PL CXVI, Fig. 6, gives a portion of a 

 leaf that must have been 4 cm. wide in its widest part. It belongs to 

 collection No. 8 and bears the number M. G. S., 8569. 



Celastrophyllum ? mary'landicum Fontaine n. sp. 



PL CXVI, Fig. 7. 



Among the fossils from the Terra Cotta Works (collection No. 6) 

 there is the. imprint of a leaf that seems to be a new species of Celas- 

 trophyllum. As, however, it is unfortunately shown in only a single 

 imperfect leaf, its full character can not be made out, and even its 

 generic position must be left in doubt. The fossil is a fragment of a 

 leaf that has its left-hand margin preserved to near the original base 

 and summit of the leaf. The extreme base and summit and most of 

 the right-hand margin are wanting. The part preserved shows a 

 length of 7 cm., hence the leaf was much longer than any of the leaves 

 of Celastrophyllum hitherto described from rocks on this horizon. The 

 aspect of the leaf indicates that when entire it was elongate-elliptical 

 in form. The margins have shallow teeth that resemble in form those 

 of Protemphyllum dentaium. The nervation is obscure. Some thin 

 secondary nerves may be seen going off very obliquely from the midrib, 

 and they resemble the nervation of a Celastrophyllum more than that 

 of Protesephyllum. The specimen bears the number W. C, B., 6096. 



