art. 19. MIOCENE PLANTS FROM SOUTHERN MEXICO—BERRY. 7 
Venezuela, differing from the latter in the usually branched condition 
of the secondaries, in the less stout midrib, in the character of the 
basal secondaries, and in the tertiary venation of the basal margins. 
The secondaries are also less regularly spaced, the maximum width 
is higher above the base, and the tertiaries anastomose more fre- 
quently. The material from Tehuantepec is also much more nearly 
complete than that from Venezuela. 
A third fossil species, with a tripalmate primary venation is ex- 
ceedingly abundant in the Pliocene of eastern Bolivia and will shortly 
be published. The genus contains about 15 existing species of shrubs 
and trees, all of which exhibit the characteristic venation exhibited 
by these fossil forms, even a small fragment being unmistakable. 
They are confined to the rain forest country between southern Mexico 
and Brazil and Bolivia 
Occurrence.—Small arroya 14 km. west of telegraph station, San 
Jose del Carmen, State of Vera Cruz. 
Holotype.—Cat. No. 36814, U.S. N. M. 
Genus FICUS Linnaeus. 
FICUS TALAMANCANA Berry (?). 
Plate 3, fig. 7. 
Ficus talamancana Berry, Proc. U. 8. Nat. Mus., vol. 59, p. 172, pl. 23, 1921. 
Leaves elliptical to broadly lanceolate in general outline, with an 
apiculate acuminate tip and a decurrent base; of relatively large size. 
Margins entire and full. Texture subcoriaceous. Length ranging 
from 12 to 16 ecm. Maximum width, in the median region, ranging 
from 5 to7 cm. Petiole stout. Midrib very stout, prominent on the 
under surface of the leaf, relatively narrow on the upper surface. 
Secondaries eight or nine subopposite to alternate pairs, diverging 
from the midrib at wide angles of about 75° to 80°, curving regularly 
but slightly, and camptodrome in the marginal region. ‘Tertiaries 
thin, forming an open, prevailingly quadrangular, minute areolation, 
partly consisting of percurrent nervilles. 
A single fragment of a leaf unlike anything else in the collection is 
referred with some hesitation to this species which was founded upon 
somewhat larger leaves from the Miocene of Costa Rica. In some 
respects it invites comparisons with the genus Anona, and only the 
collection of more complete material will set the present doubts at 
rest. 
Occurrence.—Isthmian railroad ? km. north of Palomares on the 
Saravia estate, State of Oaxaca. 
Plesiotype.—Cat. No. 36815, U. S. N. M. 
