268 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 51. 



BANKSITES UNEATUS Lesquereux. 



Banl-sites lineatus Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. 

 and Tert. Fl.), 1883, p. 165, pi. 32, fig. 21. 



There are half a dozen good specimens in the Scudder material. 

 Family ARISTOLOCHIACEAE. 



ARISTOLOCHIA WILLIARDIANA, new species. 



Plate 22, figs. 1, 2. 



Leaf of medium size and membranaceous texture, broadly ovate- 

 cordate, the basal sinus deep and rounded, the lobes broadly rounded; 

 apex of blade obtuse; midrib strong, straight; secondaries on the 

 midrib 6 or 7 pairs, at an angle of about 45°, parallel, camptodeome, 

 joining the one next above by broad loops just below the margin; a 

 pair of secondary branches or ribs arise at the very base of the blade 

 and turn abruptly downward, with small forking camptodeome 

 branches on either side to supply the basal lobes; nervilles numerous, 

 very distinct, mainly unbroken, but occasionally broken and forked. 



Type.— Ca,t. No. 34,756, U.S.N.M.; cotype. Cat. No. 50,271, U.S. 

 N.M. [No. 30 of Lacoe collection]. 



The example selected as the type (fig. 1) is a fine leaf lacking only a 

 portion of one side. It is about 9 cm. long, 7 cm. wide, and has the 

 basal sinus a little more than 2 cm. deep. The other specimen (Cat. 

 No. 50,271, U.S.N.M.) is much less perfect, as it lacks practically all of 

 the margin except at the base; its size was about the same as that of 

 the type. This latter specimen had passed through Lesquereux's 

 hands and was indicated by him as a new species of Cercis, but it can 

 not belong to this genus. 



This species is, in a general way, of the same type as Aristolochia 

 crassifolia (Newberry),* from the Fort Union formation, but it is of 

 course much smaller and much narrower. It is possible that it may be 

 the same as Aristolochia mortua CockereU,^ but that species is de- 

 scribed as having the leaf thin and the veins not united (campto- 

 drome) on the lateral margins. The length of A. mortua is said to be 

 about 105 mm. and the breadth about 70 mm.^ The figure is so 

 poorly executed that almost nothing can be made out regarding the 

 nervation, and altogether it is impossible to decide whether it is the 

 same as what is here called A. williardiana. Leaves that are to be 

 referred to Aristolochia are evidently rare as Florissant, since appar- 

 ently only three have thus far been detected. 



> Mon. U. S. Geol. Surv., vol. 35, 1898, p. 90, pi. 60, fig. 4. 



2 Bull. Amcr. Mus. Nat. Hist., %'ol. 24, 1908, p. 90, pi. 8, flg. 25. 



s If this size is correct, the figure of it (pi. 8, fig. 25) is less than half natural size, but no mention is 

 made of the reduction in the explanation of plates or elsewhere. This practice of publishing figures that 

 are lass than natural size without mentioning the fact, is certainly to be deplored. 



