252 PROCEEDINGS OF THE NATIONAL MUSEUM. vouSl. 



The affinity of this plant has not been recognized with certainty. 

 In some ways it certainly suggests Potamogeton, to which it was referred 

 by Lesquereux, but its opposite leaves and pediceled fruits are not 

 wholly in accord with this genus. It has been shown to many 

 botanists and no one has been able to suggest anything like an obvi- 

 ously close relationship for it. It is not at all certain that the impli- 

 cation in the generic name given it is the correct one, for it may not 

 really be allied to Potamogeton, and it is pubhshed at this time simply 

 to make it a matter of record and in the hope that some one may be 

 able to place it more definitely. 



Family NAIADACEAE. 



NAJADOPSIS KUGULOSA Lesqoerenx. 



Najadopds rugulosa Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 

 (Cret. and Tert. Fl.) 1883, p. 142, pi. 23, fig. 7. 



A single example in the Scudder material. 

 Family LEMNACEAE. 



SPIBODELLA PENICttLATA (Lesqnerenx) Ck>ckerell. 



Spirodella penidUata (Lesquereux) Cockerell, Univ. Colorado Studies, vol. 3, 

 1906, p. 174; Bull. Amer. Mus. Nat. Hist., vol. 24, 1908, p. 79. 



Lemna penicillata Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. and 

 Tert. Fl.) 1883, p. 143, pi. 23, fig. 8. 



Type.— C&t. No. 1,628, U.S.N.M. 



This specimen, so far as known, still remains imique. It is very 

 obscure and may or may not have been correctly interpreted and 

 figured, and at best it can not be considered of great value. 



Family PALMACEAE? 



PALMOCARPON7 GLOBOSUM Lesqnerenz. 



Palmocarponf globosum Lesquereux, Rept. U. S. Geol. Surv. Terr., vol. 8 

 (Cret. and Tert. Fl.), 1883, p. 144, pi. 24, fig. 3. 



The Scudder collection contains two well-preserved specimens that 

 are referable to this species. It is extremely doubtful if this fruit has 

 anything to do with the palms, which so far as authentically known 

 did not occur at Florissant. 



Family JUGLANDACEAE. 



JUGLANS MAGNIFICA. new epectes. 



Plate 15. (About half natural size.) 



Juglans crossii Knowlton. Kirchner, Trans. St. Louis Acad. Sci., vol. 8, 

 1898, p. 183, pi. 14, fig. 1. 



Leaf of large size, at least 30 cm. long and about 25 cm. broad, 

 odd-pinnate, with at least 11 leaflets; rachis thick (3 mm.), especially 

 below; terminal leaflets long-petiolulate (3.6 long), symmetrical, 



