OLDER POTOMAC OF VIKOIMA AND MAKYLAXD. ')iid 



Cklastkui'iivi.1.1 M i.A iii'oi.u .M Foil 1 nine. 



PI. CXYl, Fi-. C. 



FS.S'J. Cela.stropltylluin latlfolium Fuiil.: I'utomac I'Mora (Monoj;r. V . S. (icol. Surv., 

 Vol. XV), p. 306, pi. clxxii, fifjs. .S, (i; pi, ilxxiii, (ig.s. 1.?, \:V.\. 



Tins sp(>ci('s wa.s described in .M()ii()<;;i-ai)li X\' as (juilc coinnion 

 at Belt and ("oxinjitoii .streets, Baltini()i-(>. In the (ovintiton and Clem- 

 ent streets collections, made by Mr. liibbins, it is ratliei- abundant, 

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

 distortion,' which has disguised their shaj^e. The leaves vary a good 

 deal in size, some l)eing nuich larger than others. In shape they are 

 mostly broadh- elliptical. Twelve specimens were obtained fi-om Cov- 

 ington and Clement streets. PI. CXVI, Fig. (i, gi\-es a portion of a 

 leaf that must have l)een 4 cm. wide in its widest i)a)-t. It belongs to 

 collection Xo. N and bears the number M. G. S., 8569. 



CELAsri{( )rH YLLUM ? MAia'LANDicuM Fontaine ii. sj). 

 PI. CXVI, Ficr. 7. 



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

 there is the imprint of a leaf that seems to l)e 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 preser^'ed 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 hoi-izon. 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 Prolea'phyllum dentatum. 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 Protea^phylhun. The specimen bears the numljer W. C, B., G096. 



