No. 2363. FOSSIL PLANTS FROM DOMINICAN REPUBLIC— BERRY. 123 



in the marginal region. Tertiaries thin, subparallel, with secondarie 

 with which they unite at acute angles. 



This species has the characteristic venation of the genus, known 

 in the fossil state only from the Wilcox Eocene of the United States 8 

 and the Gatun formation of the Canal Zone. 9 In form the present 

 species approaches Bumelia, but the venation is decidedly different. 

 A somewhat similar venation is displayed in the genus Chrysophyllum 

 of the family Sapotaceae where, however, the normally pointed 

 leaves are not typically, but occasionally obovate or retuse, and in 

 which the venation is not identical with the fossil. The genus 

 Cdlyptranihes contains about 70 existing species ranging from Mexico 

 and the West Indies to southern Brazil and exclusively American 

 except for certain doubtfully determined forms from the Fiji Islands, 

 Africa, Mauritius, and Java. The present fossil species may be 

 compared with the existing Calypyranihes syzygium (Linnaeus) 

 Swartz, a shrub or small tree of Haiti and other islands of the Antilles. 



Occurrence. — Locality No. 8607. Bluff on Samana Bay, about 1$ 

 miles east of Sanchez, District of Samana. 



Hdlotype.—C&t. No. 35456, U.S.N.M. 



Family COMBRETACEAE. 



Genus BUCIDA Linnaeus. 



BUCIDA SANCHEZENSIS, new species. 



Plate 21, fig. 8. 



Description. — Leaves obovate in form, widest distad a short dis- 

 tance below the broadly rounded and slightly emarginate apex, nar- 

 rowing rapidly to the narrowly cuneate or decurrent base. Margins 

 entire. Texture coriaceous. Length about 5 cm. Maximum width 

 about 3.75 cm. Petiole missing. Midrib stout and prominent. 

 Secondaries ascending and camptodrome in the wider distal part of 

 the leaf becoming flatter and straighter in the narrowed basal half 

 of the leaf where their camptodrome endings become modified to 

 form a pseudomarginal vein. Tertiaries obsolete. 



This characteristic leaf appears to represent a Tertiary species of 

 Bucida, a genus which is monotypic in the existing flora, its single 

 living species being a strand and coastal marsh plant of the peri- 

 meters of the Caribbean and throughout the Antilles, and just reach- 

 ing the tip of the Florida peninsula. The genus has not heretofore 

 been recognized in the fossil state. 



Occurrence. — Locality No. 8684. Cut in clay near pier at Sanchez, 

 District of Samana. 



Eolotype.— Cat. No. 35457, U.S.N.M. 



» Berry, E. W., U. S. Geol. Surv. Prof. Paper 91, p. 319, pi. 90, fig. 5, 1916. 

 » Berry, E. W., U. S. Nat. Mus. Bull. 103, p. 39, pi. 18, fig. 1, 1919. 



