288 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.55. 



Order RANALES. 

 Family ANONACEAE. 



Genus GUATTERIA Ruiz and Pavon. 

 GUATTERIA CULEBRENSIS Berry. 



Plate 16, fig. 3. 



Ouatteria culcbrcnsis Berry, U. S. Nat. Mus. Bull. 103, p. 27, pi. 13, fig. 2, 

 1918. 

 Description. — Leaves of large size, broadly ovate in general out- 

 line, with a narrowed slightly deciirrent base and a narrowed and 

 extended acuminate tip. Length about 20 cm. Maximum width, 

 approximately midway between the apex and the base, between 6 

 cm. and 7 cm. Margins entire. Texture coriaceous. Petiole short 

 and stout, enlarged proximad, about 2.25 cm. in length. Midrib 

 stout and prominent. Secondaries mediumly stout and prominent; 

 about ten opposite to alternate pairs diverge from the midrib at 

 angles ranging from 45 to 60 degrees, sweeping upward in regular 

 ascending subparallcl curves and cam])todrome in the marginal re- 

 gion. Tertiaries, where visible, pcrcurrent. 



This is one of the more abundant and better preserved forms in 

 the Panama Canal Zone occurring in formations that are referred to 

 the Aquitanian and Burdigalian stages by Invertebrate paleontolo- 

 gists. The large size of the leaves usually results in fragmentary 

 specimens, the tip being almost invariably missing. The material 

 from Peru is more broken than that from Panama but there can be 

 little doubt of the identity of the two occurrences. 



The present species shows similarities with various existing species 

 of Anonaceae. It is much like Anona macgravii Martius of Brazil 

 (Bahia and Pernambuco), Venezuela, French and Dutch Guiana. It 

 is, however, among the various existing species of Guatteria that the 

 closest homologies are to be seen. The latter genus contains about 

 fifty existing species of shrubs and trees, exclusively American,^ 

 and found in Mexico, Central America, tropical South America, and 

 in the northern Andes. The fossil may be compared witli a number 

 of the still existing species as, for example, Guatteria ouregon Dunal, 

 a large Caribbean tree, and equatorial South American Guatteria 

 doUchopoda De Candolle or Guatteria grandiflora De Candolle of 

 Central America. 



Plesiotype.— Cat. No. 35335, U.S.N.M. 



Genus ANONA Linnaeus. 



ANONA WINSLOWIANA, new species. 



Plate 15, fig. 4. 

 Description. — Leaves broadly elliptical in outline, with possibly 

 an obtusely pointed apex. Base broadly rounded. Margins entire. 



* The Asiatic species of authors are referred to the allied genus Polyalthia. 



