402 GEOLOGICAL SURVEY OF THE TEEEITORIES. 



Ehamnus rectinbrvis, Heer. 



The same form as described in Eept. 1871, p. 295. 



Ehamnus obovatus, Lsqx. 



Eepreseiited in two badly preserved specimens. They are, however, 

 easily ideniifiable. 



Ehus Evansii, Lsqx., Eept. 1871, p. 293. 



The specimens are of the same size and form as those described in the 

 report. 



JuGLANS Ehamnoides, Lsqx., Eept. 1871, p. 293. 



Already described from the same place. 



Carya antiquorum, jSTewb., Eept. 1871, p. 294. 



I found a large number of well-preserved leaves referable to this 

 species, some larger still than the one formerly described. The general 

 form is of the same type as that of Juglans rugosa ; the borders of the 

 leaves, however, are creuulate and the secondary veins craspedodrome, 

 their points and their divisions entering the crenules, the lowest ones 

 after curving along the borders. There is a great variety in the nerva- 

 tion of these leav^os. Their substance is thickish, subcoriaceous. 



Cassia concinna, Heer, Flor. Tert. Helv., Ill, p. 122, PI. xxxviii, Fig. 41. 



The figure given by Heer represents a branch of apparently unfolding 

 leaves. We have one specimen with a single leaf so remarkable in form 

 and so exactly similar to that figure enlarged, 41^, loc. cit., that it is 

 impossible to doubt that it represents the same species. It is, however, 

 uncertain if these leaves represent a species of Cassia. 'The young 

 branches of PeUopliorum adnatum, Gr., of Cuba, bear leaves of exactly 

 the same form. The half opened buds of our Gleditschia triacanthos 

 have also their leaves of the same kind. 



Calycites hexaphylla, sp. nov. 



An open calyx or involucre of a detached fruit, at the top of a slen- 

 der pedicel. The point of attachment is round, 4 mill, wide, with a cen- 

 tral small mamilla 1 mill, broad: the follicule divides at a short distance 

 from the central point in six linear, entire, undulate, obtuse segments, 2 

 cent, long from the central point, diverging star-like, coriaceous and 

 narrowly striate in the length. The central point evidently marks this 

 vegetable as representing a calyx, rather than a coriaceous corolla. It 

 may be compared to what Dr. Newberry has named Calycites poly sepalaj 

 though the form of the divisions is far different. It is apparently refer- 

 able to an involucre or persistent calyx of some Lauracece, or perhaps of 

 some Biosinros, though few species of this genus have hexamerous 

 divisions. 



