178 



one, which shows a portion of the pinnule-bearing part of a 

 rachis 4.4 cm. long, the pinnules are slightly larger than in the 

 other figured specimen and are more scattered, but this is due to 

 the loss of the intervening pinnules. In the other figured speci- 

 men a similar pinnule-bearing part of the rachis 4.7 cm. long 

 shows traces of fourteen pairs of pinnules. The rachis is some- 

 what more slender than in the other specimen and the pinnules 

 are slightly smaller. The unfigured specimen shows 5 cm. of 

 pinnule-bearing rachis with traces of twelve pairs of pinnules. 



Fig. I. Zamia mississippiensis, for explanation see text. 



These evidently represent a Zamia with slender graceful leaves 

 and much reduced pinnules somewhat suggestive of the existing 

 Zamia floridana DeCandolle which inhabits the so-called fiat- 

 woods of the east coast of Florida south of New River. 



In my account of the lower Eocene flora of southeastern North 

 America (U. S. Geological Survey, Professional Paper 91) I 

 described as Zamia (?) wilcoxensis (op. cit., p. 169. pi. 114. f. 2) 

 a single broken pinnule of a cycad which I compared with the 

 existing Floridian Zamia pumila Linne. It is interesting to 

 find the remains of a second species somewhat resembling the 

 only other living Florida species at a horizon as old as the lower 

 Eocene. The two, while based on a rather meager amount of 



