278 PROCEEDINGS OF THE NATIONAL MUSEUM. 



I am uncertain as to the generic reference of this specimen. It 

 seems to be most closely related to Dalbergia cuneifoUa Lesquereux,* 

 from which it differs in its smaller size, relatively shorter and broader 

 form with the base decuiTent on the slender petiole. 



DALBEBGIA7 COLORADENSIS. new species. 



Plate 19, fig. 4. 



Fruit a compressed indehiscent pod, elliptical in shape, about 

 equally narrowed below to the stout pedicel and above to the acum- 

 inate apex, margin thickened. 



Type.— C&t. No. 50,330, U.S.N.M. [Original No. 61, Lacoecollectionl. 



The example figured, which was contained in the Lacoe collection 

 (No. 61), is the only one observed. It is rather broadly elliptical in 

 shape, being 3.5 cm. in length and 1.4 cm, in width, with about 4 mm. 

 taken up by the basal or attached portion. There is a thickened 

 marginal rim about 2 mm. in width. In the narrowed basal portion 

 there are five little bodies serially arranged that have the appearance 

 of being aborted ovules, but whether the larger expanded portion was 

 one-seeded or not it is difficult to ascertain. 



This species does not agree very closely with any of the Uving 

 species of Dalbergia it is possible to consult in the National Herba- 

 rium, being perhaps closest to D. ■polyphjUa Miquart from the East 

 Indies. Among fossil species, however, it is very much like Dalbergia 

 primaeva Unger,^ from the upper Eocene of Sotzka, from which it dif- 

 fers in its smaller size, less pointed and toothed apex, and abruptly 

 narrowed basal portion. 



Since the above was written Professor Cockerell visited my labora- 

 tory and on being shown this specimen immediately called attention 

 to its resemblance to, or possible identity with, liis Acerates fmctifer.^ 

 Superficially the resemblance between these two specimens is rather 

 strong, but this is confined to the shape and size, for the figure of A, 

 fructifer is so obscure that nothing can be determined regarding its 

 structure. The specimen under consideration may or may not prop- 

 erly be referable to Dalbergia, but it certainly is not a foUicle of 



Family ANACARDIACEAE. 



RHUS HILLIAE Lesqoereux. 



Rhvs hilliae Lesquereux, Kept. U. S. Geol. Surv. Terr., vol. 8 (Cret. and Tert. 

 FI.), 1883, p. 194, pi. 41, figs. 12-15. 



Several specimens in the Hambach collection [Cat. Nos. 33,734, 

 33,735, 33,738, U.S.N.M.] 



> Kept. U. S. Geol. Surv. Terr., vol. 8 ((, ret. and Tert. Fl.), 18S3, p. 200, pi. 34, figs. 8, 7. 

 « Terr. FI. v. Sotzka, 1S50, p. 55 [185], pi. 39 [40], figs. 8-10. 

 a Amer. Nat., vol. 42, 1908, p. 580, fig. 10. 



