260 PROCEEDINOS OF THE NATIONAL MUSEUM. vol.61. 



COMPTONIA INSIGNIS (Lesquerens) CockereU. 



Comptonia insignis (Lesquereux) Cockerell, Univ. Colorado Studies, vol. S, 

 1906, p. 173.— Berry, Amer. Nat., vol. 40, 1906, p. 499.— Cockerell, Bull. 

 Amer. Mus. Nat. Hist., vol. 24, 1908, p. 81. 



Myrica insignis Lesquereux, Ann. Rept. U. S. Geol. and Geogr. Surv. Terr., 1874 

 [1875], p. 312; Rept. U. S. Geol. Surv. Terr., vol. 7 (Tert. Fl.), 1878, p. 135, 

 pi. 65, figs. 7, 8; vol. 8 (Cret. and Tert. Fl.), 1883, p. 150. 



The typeHspecimens of Lesquereux' s Myrica insignis are preserved 

 in the United States National Museum (No. 538, both being on the 

 same piece of matrix), and apparently remain miique. It is not 

 present in any of the recent collections that have passed imder my 

 eyes. 



This species is undoubtedly most closely related to Myrica alka- 

 lina Lesquereux^ from Alkali Station, a few miles north of Green 

 River, Wyoming, and in fact Berry ^ has already imited them, stating 

 that he is "inclined to think that the leaves which Lesquereux called 

 aVcalina are simply the young leaves of which insignis is the mature 

 leaf, for they are (1) much more variable in lobation, (2) smaller in 

 size and definiteness and in the extent of their lobes, combined with 

 narrower lamina, and (3) they have a much thicker midrib." 



Comptonia insignis has also some resemblance to certain of the 

 figures given by Lesquereux ^ of his Myrica diversifolia, which in this 

 paper is caUed Crataegus acutilohus. 



Family SALICACEAE. 



SALIX, species. 



Plate 13, figs. 4, 5. 



The Hambach collection includes three leaves, two of which are 

 here figured, which are obviously those of Salix, but which I have 

 hesitated either to identify with a known species, or to describe as 

 new. They are naiTOwly linear-lanceolate but with a short petiole 

 and long wedge-shaped base. The nervation is nearly obsolete in the 

 smaller specimen, but in the other it consists of a relatively strong 

 midrib and about four or five pairs of slender secondaries at a very 

 acute angle of divergence. 



Types.— C&t. Nos. 33,744, 33,745, U.S.N.M. 



This form has a resemblance to a number of species, such for 

 instance as a very small, naiTOW leaf of S. angusta, but the nervation 

 differs somewhat. 



1 Lesquereux, Leo, Rept. U. S. Geol. Surv. Terr., vol. 8 (Cret. and Tert. Fl.), 1883, p. 149, pi. 45A, flgs. 

 10-15. 

 » Berry, Edward W., Living and fossil species of Comptonia, Amer. Nat., vol. 40, 190(5, p. 499. 

 3 Lesquereux, Leo, Rept. U. S. Geol. Surv. Terr., vol 3, 1883, p. 148, pi. 25, flgs. 6, 11, 12, etc. 



