DESCKIPTION UF TLIE Sl'KClKS. 313 



send oflF obliquely on both sides branches, the largest on the lower side ; 

 ultimate branches sent off nearly at rig-ht angles from these and from the 

 midnerve, which meet under a large angle to form the ultimate reticula- 

 tion ; this composed of irregular, -three to five sided, distinctly marked 

 meshes; from the base of the lowest iirimarics on th(> lower side two strong 

 lateral ner^•es go off. 

 • Locality: 72d mile-post, near lirooke; rare. 



Ulmipiiyllum tenuinerve, sp. nov. 



Plate CLVIII, Fig. 1. 



The leaf is too fragmentary to make out its shape ; midnerve distinct 

 but small; lateral primary nerves going oft' at equal and regular intervals, 

 opposite, and oblique, proceeding straight and parallel towards the mar- 

 gin; branches going off at angles varying from 45° to 90° from the pri- 

 maries meet and sometimes form a pretty continuous intermediate connect- 

 ing ultimate nerve ; ultimate reticulation slender, and composed of meshes 

 that vary much in size and shape, being angular and four to six sided. 



Locality: 72d mile-post, near Brooke ; very rare. 



The arrangement of the primaries in this species is nuu-h like that in 

 U. crassinerve, but the ultimate nervation is quite different. 



Ulmiphyllum crassinerve, sp. nov. 



Plate CLVIII, Figs. (5, 7. 



Leaf apparently large, form not made out ; midnerve moderately 

 strong but very distinct ; lateral primary nerves comjiaratively thick and 

 very distinct, leaving at an angle of 45°, opposite, going straight and 

 parallel to the margin; the primarv nerves send off at right angles branches 

 that fork, with the branches diverging wideh' and anastomosing to form a 

 ver}' irregidar net-work that varies much in size and shape ; the meshes 

 are mostly elongate, with their largest dimensions perpendicular to the 

 primaries. 



Locality: Deep Bottom; not very rare. 



This leaf is nnich like Qwrcus of the Q.faginea type. 



