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nized in the Florissant flora from the leaves, two species being 

 described, F. florissantella Ckll. and F. arenaceaeformis Ckll. A 

 remarkable confirmation of the existence of Ficus there was made 

 when Mr. C. T. Brues found among the insects collected long 

 ago by Scudder a veritable fig-insect, which he described* as 

 Tetrapus mayri, dedicating the species to Gustav Mayr, who was 

 a great authority on the subject, and originally described Tetra- 

 pus. Now we have the figs themselves, and although it is very 

 likely that they should be associated with one of the species 

 described from the leaves, it is impossible to say which, so I 

 give them provisionally a separate name. 



Ficus Bruesi n. sp. 



Fruit long-pyriform, about 33 mm. long and 11 mm. wide 

 as shown in the figure; basal part slightly plicate. 



As preserved , the fruits are dark brown . The type 

 specimen shows two round gall-like bodies, shown in 

 the illustration, but from the dark color of the 

 specimen inconspicuous in the actual fossil. One 

 of these, in particular, contains an object which 

 seems to have the indistinct outline of an insect, 

 and I really believe that these objects are the 

 Tetrapus developing within the fig. 



The fig is remarkable for its elongated form, but 

 similar species exist to-day. It is probably on 

 account of this character that the name longipes 

 has - been applied to different species inhabiting 

 Madagascar, Assam, and Mexico. 



Other fossil figs have been found, one {F. neurocarpa Hollick, 

 1903) being as old as the Dakota Cretaceous. 



Some fossil species of Ficus found in Colorado need new names, 

 as follows: 



Ficus coloradensis n. n. 



Ficus irregularis Lx., Bull. U. S. Geol. and Geog. Surv. Terr. 

 1875 : 368. 1876. Not F. irregularis Miq., Ann. Mus. Bot. 

 Lugd. Bat. 3 : 224. 1867; nor Steud., Nom. ed. 2 : 636 



Fruit of Fi- 

 cus Bruesi. 



*Bull. Mus. Comp. Zool. LIV, 17. 1910. 



