NATURAL SCIENCES OP PHILADELPHIA. 27 



sas specimens appear, however, to be more elongated than those figures by Dr. 

 Morton, and may be distinct. In form they resemble very much some varieties 

 of Epithyris elongata, Schlot. sp. as figured by King, in Perm. Fos. Eng. pi. vi., 

 particularly the narrower varieties, such as fig. 35. The beak of our Kansas 

 shell, however, is not truncate but pointed, the perforation being on the outside, 

 and a little removed from the extremity. If it is identical with T. bovidcns, 

 Morton's specific name will have to take precedence, being the older. It re- 

 mains to be determined whether its internal characters agree with Terebratula, 

 as now restricted. 



Thi3 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. 



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 Carrier ophoria, King, if not into Rhyn- 

 chonella] at any rate they are certainly not Terebratula. We are inclined to the 

 opinion that ashell described by Prof. Swallow, in the Trans. Acad- Sci. St. 

 Louis, vol. 1, page 219, under the name of Rhynchonella (Camerophoria) Osagen- 

 $is, 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 invariably 

 but two plications in the sinus. 



Quite common in division No. 94 at Manhattan and at several localities be- 

 tween there and the Missouri, in the Upper Coal Measures. Prof. Marcou, cites 

 it as a mountain limestone species, but we know nothing of its existence in 

 rocks of that age. 



Retzia Mormonii. 'Terebratula Mormonii, Marcou, Geol. N. A., p. 51,pl.vi., f. 11.) 

 We found this species quite abundant in division 37, at Manhattan, where it is 

 associated with the last. It also ranges far below this in the upper Coal meas- 

 ures between Manhattan and the Missouri, being quite common near the sum- 

 mits of the hills back of Leavenworth city. Dr. B. F. Shumard has described 

 a species in the Trans. Acad. Sci. St. Louis, under the name of Retzia punctilife- 

 ra, which we suspect may possibly be a variety of the above; but as he de- 

 scribes it as having usually in the dorsal valve " a moderately wide, shallow si- 

 nus, which extends from the front nearly to the beak," and the species before 

 us, of which we have many specimens, has no traces of a sinus, we are left in 

 doubt. In other respects his description agrees exactly with our shell, and he 

 also states that he has it from K. T. Prof. Marcou found this species at the 

 Salt Like City, Utah, in a rock he refers to the mountain limestone. We have 

 never seen it from below the Coal measures. 



Spirifer Kentuckensis, Shumard, Geol. Survey of Missouri, part 2, page 203. 

 Found in upper Coal Measures near the top of bluffs, back of Fort Leavenworth, 

 also near the landing at Leavenworth City, and at other localities between the 

 Missouri and Blue river. 



Spirifer cameratus, Morton, American Jour. Sci. vol. 29, p. 150, plate 11, fig 3. 

 This is the same species as has been determined by Prof. Hall, described by 

 Dr. Roemer as S. Meusebachanus. (Kreid von Texas, p. 88, pi. xi. fig. 7) and sub- 

 sequently by himself as S. triplicatus, in Stansburv's Rept. p. 420, pi. iv. fig. 5. 

 Prof. Marcou has recently figured it in his work on the Geol. North America, 

 page 49, pi. viii. fig. 3, as a variety of Spirifer striatus, Martin, from which it is 

 quite distinct. He found it at Pecos Village in a rock he refers to the lower 

 Carboniferous or mountain limestone. It has a great geographical range, be- 

 ing common in the coal Measures from Pennsylvania to the Rocky Mountains, 

 and from Nebraska to New Mexico; we have never seen it, however, from lower 

 Carboniferous rocks. 



1859.] 



