266 THE rOIOMAC Uli YOUNGEli MESOZOIO FLOKA. 



Carpolithus Virginiensis, sp. nov. 



Plate CXXXIV, Figs. 11-14; Plate CXXXV, Figs. 1, f. ; Plate CLXVIII, Fig. 7. 



Seeds hard, smooth, and nut-like, small, obovate or broadly elliptical, 

 sometimes globular, often more or less strongly ridged, ridges seen for the 

 most part three in number, borne singly on short pedicels, arranged 

 alternately on the principal branches, and tending to assume a fasciculate 

 grouping. 



Localities: Near Telegraph Station; fishing hut above Dutch Gap 

 Canal. 



These fruits are rare at the first-named locality, but are not unconnnon 

 at Dutch Gap. The ridges seen do not seem to show themselves unless 

 maceration has removed some of the exterior tissue of the seed. The seed 

 seem originally to have had smooth, firm exteriors. Like the preceding 

 species of Carpolithus, they were probably inclosed in some sort of fleshy 

 matter, possibly having been plum-like. These seeds occur with abundant 

 impressions of the leaves of Baieropsls, and the pedicels with the principal 

 stems resemble the woody matter of Baieropsis more than that of any 

 other plant. It is probable that these are the seeds of some species of that 

 genus, perhaps of B. pluiipartita, the one with which they are most com- 

 monly associated. The fact that almost exactly similar seed are found 

 constantly with Baiera Mimstcrimia makes this all the more probable, since 

 that plant seems to be nearer to Baieropsis than to the true Baicrus. These 

 latter, according to the figures of Heer and Nathorst, have their leaves 

 sparingl}^ subdivided into lobes of equal importance, are very narrowly 

 wedge-shaped, and are grouped on the summits of short shoots. These 

 features are not found in some of the forms of Baiera Miinsteriana. These 

 seed resemble Lesquereux's Vinclioiiidium ovale, but these latter are smallei-. 

 They may be compared also with the seed of Heer's^ Cgekanowskia. They 

 are strikingly like Lesquereux's Carpites (leuunaceusr PI. CLXVIII, Fig. 7. 

 is peculiar in showing only one strong rib, instead of three. 



I Flor. Foss. Arctica, vol. 6, Part I, PI. VI, Fig. 15. 

 -Cretaceous aud Tertiary Floras, PI. XL, Fig. 19. 



