288 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 51. 



would be that it originally had five sepals, as there is about room 

 enouo-h in the empty space for another sepal the size of the others. 

 There is also some evidence that the sepals in the type-specimen are 

 of two sizes, that is in the figure as now oriented the two lower 

 sepals are slightly smaller than the two upper ones. The specimen 

 figured by Cockerell also shows this tendency, though they are dis- 

 posed in a little different mamier. 



I take pleasure in naming this species in honor of Prof. Theodore 

 D. A. Cockerell, of the University of Colorado, who has done so much 

 to extend our knowledge of the plants and insects of the Florissant 

 lake beds. 



POEANA SIMILIS, new species. 



Plate 27, figs. 1, 2. 



Calyx of large size (about 3.5 cm. in diameter), coriaceous in 

 character, strongly 4 or 5 lobed, the lobes unequal size, broadly del- 

 toid, very obtusely pointed or almost rounded; each lobe with 5 or 6 

 rather thin veins which arise at the central point and converge in the 

 tip of the lobe; cross voinlets at right angles to the veins, somewhat 

 irregular, often broken, producing irregular quadi-angular areas. 



Type.—Q^i. No. 34,736,U.S.N.M. ; Cotype, Cat. No. 34,737, U.S.N.M., 

 both from the Hambach collection. 



This species is very well represented by the two examples figured. 

 It is obviously very closely related to Parana speirii Lcsquereux,^ 

 also from Florissant, from which it differs in the strong and well- 

 marked lobes which are obtusely pointed instead of low and per- 

 fectly rounded, and in the nervation. The vems are represented as 

 diverging from the center, often forked and passing straight to the 

 margin, while in P. similis the veins are fewer in number, not forked 

 and all converge in the tips of the lobes. The cross veinlets are very 

 much the same in both forms. 



The type of Parana speini is preserved in the Princeton Museum, 

 and, so far as known to the writer, it remains unique. It is very dif- 

 ferent from P. tenuis Lesquereux, the only other previously pub- 

 lished species from Florissant. In shape the form here described as 

 P. similis is intermediate between the two previous species as regards 

 lobation, being more markedly lobed than P. speirii, and with broader, 

 less deeply cut lobes than P. tenuis. 



Family MENYANTHACEAE. 



MENYANTHES COLORADENSIS Cockerell. 



Menyanthes coloradensis Cockerell, Amer. Jour. Sci., vol. 26, 1908, p. 543, fig. 9. 



Under this name Cockerell has described a so-called crown bearing 



five leaves, two of which are entire and the others trifoliolate. I 



1 Kept. V. S. Qeol. Surv. Terr., vol. 8 (Cret. and Tert. Fl.), 1883, p. 172, pi. 28, flg. 15. 



