ten), bifurcating several times near the base, and passing 
out into the leaf in parallel paths. 
No details concerning the leaves of the two lower 
rows are known except their departure from the axis, 
which is similar to the departure of the leaves of the 
upper rows. 
The species is named for Mrs. J. k’. Kemp,in recogni- 
tion of her generosity and helpful interest in the paleon- 
tology of the Texas Permocarboniferous. 
Texas: Baylor County, 15 miles southeast of Seymour, on the 
Emily Irish land on the south side of Salt Fork of the Brazos River. 
Upper part of the Belle Plains Formation; Wichita Group; Permian, 
in my opinion. Mrs. J. F. Kemp 19721, 19723 (Coryprs in Paleobo- 
tanical Collection, Botanical Museum of Harvard University). 
This species resembles 7?ngia crasstnervis Halle, but 
differs in having broader leaves, more numerous veins, 
and a wider angle of departure. The figured specimens 
may be compared with Halle’s plate 61, figures 1 and 3. 
It is noteworthy that both of the American species 
bear relationship to Tingia crassinervis which occurs in 
the Upper Shihhotse Series of Shansi Province, China. 
Tingia carbonica occurs in the Lower Shihhotse Series 
of Shansi, and the two species are not found together. 
Halle concluded that at least the Upper Shihhotse Series 
belonged to the Lower Permian, and that the Lower 
Shihhotse probably belonged also within the Lower Per- 
mian. Halle’ recently reported the discovery of Tingia 
hamaguchu, Tingia carbonica and Tingia elegans from 
the Nanshan Region (Kansu) of China,in rocks of Lower 
Permian age. The three species do not occur together, 
but appear in sequence in a thickness of 1200 meters. 
The two species of Tingia from Texas occur in an 
interesting association composed chiefly of the following: 
Odontopteris subcrenulata (Rost.) Zeiller, Pecopteris 
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