24 PROCEEDINGS OP THE ACADEMY OF 



Note. It affords us much pleasure to acknowledge here our obligations to 

 Prof. Henry, of the Smithsonian Institution, for free access to the extensive 

 series of books on Geology, Palaeontology, &c, in the Smithsonian Library, 

 while investigating these and our former collections from the west : also for 

 the use of rooms in the Institution, and for many other favors of great value 

 to us. 



We are likewise under especial obligations to Capt. Stewart Vanvliet, and 

 Mr. Levi Wilson of Fort Leavenworth, for favors while out in Kansas, without 

 which we could have accomplished nothing : we also received many civilities 

 from Major Sedgwick, Dr. T. G. Madison, Capt. W. S. Walker, and other officers 

 of the army at Fort Riley. 



List of the species mentioned in this paper with some remarks on the synonymy, and 

 references to the works, in which they are described. 



FORAMINIPERA. 



Fusulina cylindrica, Fischer, Oryct. Moscow, p. 126, p. 18, fag. 1 5. 



In Russia this species is said to occur only in the upper part of lower carbo- 

 niferous or mountain limestone. Yet the species usually referred to F. cylin- 

 drica in this country, so far as our knowledge extends, is not found below the 

 coal measures. From this fact, and some slight differences we observe between 

 our specimens and the figures of the Russian species, we suspect a careful 

 comparison of good specimens may possibly prove them to be distinct. 

 Ranges in Kansas from division No. 22, of the foregoing section, far down into 

 the coal measures. Found at numerous localities between Manhattan and the 

 Missouri, usually in great numbers. 



Fusulina cylindrica, Tar. ventricosa, Meek and Hayden, Proc. Acad. Nat. Sci. 

 Phila. Dec. 1858, page 261. Division No. 37, of foregoing general sectional 

 Manhattan on the Kansas, and at Juniata on big Blue river. 



Bryozoa. 

 Synocladia biserialis. Prof. Swallow refers this species with doubt to S. virgu- 

 lacea, Philips, sp. in Transactions Acad. Sci. St. Louis, vol. 1, p. 179, and points 

 out some of the characters in which it differs, stating at the same time, in case 

 it should prove to be distinct, that biserialis would be a good specific name for 

 it. We regard it as quite distinct from Phillips' species, not only in scarcely 

 ever having more than two rows of cellules, but also because the ?gemuliferous 

 vesicles, instead of being merely " tubercular and open at the summit," have 

 the form of short, but distinct spines apparently closed and rather obtusely 

 pointed at the apex. The branches or connecting process are likewise less 

 distinctly angulated between the longitudinal stems, than in S. viryulacea. 

 Occurs at Fort Riley in No. 19 of foregoing general section, and at various lower 

 horizons on the Kansas below there, down into the upper coal measures. 



Acanthocladia Americana. In the Trans. Acad. Sci. St. Louis, vol. 1, p. 180, 

 Prof. Swallow refers this species with a query to A. anceps, Schlot. sp. and re- 

 marks that it differs from that species in having "the rows of cellules diagonal 

 to the axis of the stems, instead of longitudinal, as represented by King, and 

 on ridges like that figured by Goldfuss.'' He also further remarks that " it is 

 less regularly branched, and not so distinctly pinnated as those delineated by 

 Goldfuss and King." In the specimens in our collection, the cellules are more 

 numerous, and much more crowded, than in A. anceps as figured by King The 

 specific name Americana, was suggested by Prof. Swallow. 



We found this species in Division No. 18, of the foregoing general section, on 

 Cottonwood Creek. 



ECHINODERMATA. 



Cyathocrinus ? A few scapular plates bearing some similarity to those of C. 

 ramosus, Schlot. sp. were met with by us in division No. 18, but they are pro- 

 portionably much thicker, and the articulating surfaces quite different. 

 Cottonwood Creek. 



[Jan. 



