26 PROCEEDINGS OF THE ACADEMY OF 



Productus Rogersi, Norwood and Pratten, Jour. Acad. Nat. Sci. Phil. N. S. 

 vol. ill, page 9, pi. 1, fig. 3. This species is nearly related to the last, and 

 when the shell is exfoliated, may be easily confounded with it. P. Nor- 

 woodi, however, appears never to have the distinct concentric wrinkles of this 

 species, nor do the pustules, at the base of the spines have the tendency to elon- 

 gate into indistinct ribs as in P. Rogersi. Prof. Marcou has figured in N. Am. 

 Geol. pi. 5, fig. 6, as Productus scabriculus, a shell very like this. 



Kansas valley below Mouth Blue river, in upper Coal measures. 



Productus pustulosus (?) Phillips' Geol. Yorkshire, vol. 2, p. 316, pi. 7, fig 15. 

 We have a specimen agreeing very nearly with this species in its external 

 markings, but it is much narrower, and the beak of the larger valve more ex- 

 tended, in which respect it differs quite as much from P. punctatus. 



Near Steam Boat Landing at Leavenworth city, in Coal measures. 



Productus Prattenianus, Norwood, Jour. Acad. Nat. Sci. Phil. N. S. vol. 3, p. 

 L7, pi. 1, fig. 10. In Coal measures at Indian creek and at Leavenworth city. 



Productus Calhounianus, Swallow, Trans. Acad. Sci. St. Louis, vol. 1, p. 181. 

 This fine large shell is scarcely distinguishable from P. semireticulatus var. anti- 

 qvus. but Prof. Swallow, who has seen the interior, thinks it presents well 

 marked internal differences. It occurs in No. 12 and below, at Fort Riley, also 

 on Cotton-wood creek. Prof. S. thinks it even ranges down into the lower Car- 

 boniferous. 



Chonetes Verneuiliana, Norwood and Pratten, Jour. Acad. Nat. Sci. Phila. vol. 

 3, 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. 



Chonetes 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 Cotton- 

 wood 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 umbraculum? 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. umbraculum, excepting that the striae appear to be more numerous. Ac- 

 cording 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 O. multistriata. We found it at Fort Riley and at several lo- 

 calities between there and Blue river; also in same position on Cottonwood 

 creek. 



Orthisina Missouriensis, Swallow, Tra ns. Acad. Sci. St. Louis, vol. 1, 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, 3d vol. 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 Kan- 

 sas, at Leavenworth city and west of there. 



Orthisina Shumardiana, Swallow, Trans, St. Louis Acad. Sci. vol. 1, 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 dis- 

 tance in upper Coal measures. Found at Fort Riley and between there and 

 Blue River. 



Terebratula millepunctata, Hall, Pacific Rail Road Report, vol. 3, p. 101, plate 

 2, figs. 1 2. We have the impression that this species is probably identical 

 with T. bovidens, Morton (Silliman's Jour. vol. 29, p. ) from Ohio. Our Kan- 



[Jan. 



