DESCPvIPTION OF TTIE SPECIES. 271 



Cycadeospermum spatulatdm, sj). nov. 



Plato CXXXV, Figs. 11,21. 



Seed of considei-ablo size, smooth and glo.ssy on tlio surface, spatulate 

 in form, truncate and abruptly rounded off at the ba.se, narrowed towards 

 the up|)or end ; tlie sides nearly .straight. 



Locality : Ilill-sido near Potomac Run ; rare. 



These seed, found always detached, are covered by a smooth, glossy, 

 parclunent-like epidermis, which peels off from the stone. It is the mo.st 

 common seed at the Potomac Run locality, but still is not abundant. 



Cycadeospermum ellipticum, sp. nov. 



Pl.itc CXXXV, Fig. 19. 



Seed broadly elliptical, nearl}- orlncular, smooth and firm, covered 

 with a smooth, shining epid(;rmis, that is very durable. 



J^ocalities : Fi.shing imt above Dutch Gap Canal ; Fredericksburg ; 

 rare. 



Tiiis seed must have had a considerable amount of woody matter in 

 its composition, as it leaves a deep depression in the clay. It is the most 

 common cycad seed at Dutch Gap. 



Cycadeospermum rotundatum, sp. nov. 



PKafc CXXXVI, Fig. 12. 



Seed small, subor1)icular ; surface smooth and firm, with a leathery, 

 durable epidermis. 



Locality : Kankey's. 



This small seed, found in only one specimen, is in shape similar to the 

 preceding, but is much smaller. 



Cycadeospermum angustum, sp. nov. 



Pl.ite CXXXV, Fig. 20. 



Seed narrowly elliptical, elongate, smooth, and firm. 

 Locality: ITill-side near Potomac Run. 



This seed, found in only one specimen, is very long in ])roportion to 

 its width. It seems to be a distinct species. 



