OF THE UPPER MISSOURI. 
G3 
distinguishable from P. semireticulcitus var. anti quits, but Prof. Swallow, who has seen the interior, thinks it pre¬ 
sents well-marked internal differences. It occurs in No. 12 and below, at Fort Riley, also on Cottonwood creek. 
Prof. S. thinks it even ranges down into the lower Carboniferous. 
Chonetes Verneuiliana, Norwood and Pratten, Jour. Acad. Nat. Sci. Phila. vol. iii, p. 26, pi. 2, fig. 6, N. S. 
Occurs in Kansas in Division No. 37, at Manhattan, and perhaps in upper Coal measures at lower horizons. 
Clionetes mucronata, Meek and Hayden, Proceed. Acad. Nat. Sci. Phila. Dec. 1838, page 262. Lower part 
of the section at Fort Riley (Division 9), and down near the base of the foregoing general section, also in same 
position on Cottonwood creek. 
Orthisina crassa, Meek and Hayden, Proceed. Acad. Nat. Sci. Phila. Dec. 1858, p. 261. Occurs in Coal 
measures near landing at Leavenworth city. 
Orthisina umhraculum ? Schlot. sp. Petrefakt. 1, p. 256, et 2, p. 67. We find in Kansas, ranging from 16 to 
19 of foregoing sections, many specimens of a large species of Orthisina, having almost exactly the form and other 
characters of 0. umhraculum, excepting that the striae appear to be more numerous. According to Koninck that 
species has about 108 striae on each valve, while on our Kansas specimens, we count from 160 to 200; consequently 
we suspect it may be a distinct but closely allied species; if so, we would propose to designate it by the name of 
0. multistriatci. We found it at Fort Riley and at several localities between there and Blue river; also in same 
position on Cottonwood creek. 
Orthisina Missouriensis, Swallow, Trans. Acad. Sci. St. Louis, vol. i, p. 219. This is a very peculiar plicated 
species, often much distorted. When partly embedded in the matrix, it frequently bears a striking resemblance 
to Plicatula striato-costata, Cox, vol. iii. Dr. Owen’s report on the Geol. Survey of Kentucky, page 558, pi. 8, 
fig. 7, of Atlas. Common in the upper Coal measures of Kansas, at Leavenworth city and west of there. 
Orthisina Sliumardiana, Swallow, Trans. St. Louis Acad. Sci. vol. i, p. 183. Although like the last, a plicated 
species, this is more symmetrical, and presents other well-marked differences. Ranges from No. 11 down some 
distance in upper Coal measures. Found at Fort Riley and between there and Blue river. 
Terebratula millejpunctata, Hall, Pacific Railroad Report, vol. iii, p. 101, plate 2, figs. 1, 2. We have the 
impression that this species is probably identical with T. hovidens, Morton (Silliman’s Jour. vol. xxix), from Ohio. 
Our Kansas specimens appear, however, to be more elongated than those figures by Dr. Morton, and may be dis¬ 
tinct. In form they resemble very much some varieties of Epithyris elonyata, Schlot. sp. as figured by King, in 
Perm. Fos. Eng. pi. 6, particularly the narrower varieties, such as fig. 35. The beak of our Kansas shell, how¬ 
ever, is not truncate but pointed, the perforation being on the outside, and a little removed from the extremity. 
If it is identical with T. hovidens, Morton’s specific name will have to take precedence, being the older. It re¬ 
mains to be determined wdiether its internal characters agree with Terebratula, as now restricted. 
This is a rather common form in the upper Coal measures of Kansas, and southward. We found it near the 
summit of the hills back of Leavenworth city, also at Indian creek, near Indianola, &c. It is also found at Pecos 
village (New Mexico), associated with Spirigera, Subtileta, Spirifer cameratus, and S. lineatus. 
Rhynchonella Uta (Terebratula Ufa, Marcou, Geol. N. A. p. 51, pi. vi, fig. 12). We have from the upper 
Coal measures in Kansas many specimens of a species agreeing exactly with Prof. Marcou’s description of the above 
species. These we suspect may possibly go into the genus Camerophoria, King, if not into Rhynchonella ; at any 
rate they are certainly not Terebratula. We are inclined to the opinion that a shell described by Prof. Swallow, 
in the Trans. Acad. Sci. St. Louis, vol. i, p. 219, under the name of Rhynchonella ( Camerophoria ) Osagensis, 
may be identical also with the above; yet Prof. S. says his species has from “two to six” plications in the sinus 
of the dorsal valve, while in the shell before us, of which we have quite a number of specimens, there are invaria¬ 
bly but two plications in the sinus. 
