A CONTIÎIl'.rTIOX T(^ TIÎK CF.XUS FUSFLTXA. 9 



Colunibia.'' Untortuiuitely, none of tluMii arc liiUy illustrated, and 

 it is by no means' certain that they all belong to the same species. 

 Schellwien"' is of the opinion that some of the s])ecimens of the 

 so-called 7*'. ci/Iindrica from Iowa, Illinois, Indiana and Nebraska 

 are distinct from the well known Russian s]iecies. Triticitefi 

 secalicns Say S]\ from the INIissouri region is one which was 

 usually accepted as Fmulina cylindrica, but it has lately been 

 separated from it by Girtv and even made the ty]ie of a new 

 genus. Beside these forms, Shümard'' described F. elongata from 

 New Mexico and Texas, and Schellwien^' and Spaxdel'' found 

 F. efr. regidaris Schellwien in Kansas, Nebiaska and Indiana. 

 According to Gtrty'"'^ F. elo7igala Sc'Hu.^r. occurs associated 

 with Produclus semireticidcUus var., Derbya, 31eekella, Leptodus'^ 

 and Richlhofenia in an ujiper Permian limestone of Western 

 Texas. The last two genera of Brachiopoda being almost 

 exclusively asiatic type, their record from the American 

 Permian is specially noteworthy. Of Schwagerina, we know onlv 

 S. Tobusia Meek^^' from California found together with F. cylin- 

 drica and its variety gracilis (Mc Claud limestone. Boss' ranch). 



1) There is, indeed, a multitude of articles relating to tlie Nortli American Fusulina. 

 Tho-e published before 1897 are found in S. Weller's "A Bibliographic Index of North 

 Amoiioan Carboniferous Invertebrates" (Bull. U. S. Geological Survey, No. 153, 1898). 

 ' Manual cf Geology ' of J. D. Daxa (4th Edition), amongst otliers, gave me a fair under- 

 standing of the distribution of tlie fossiliferous deposits and their kimls. Tiie later publications 

 at ray disposal are: G. II. Girty : The Carboniferous Formations and Fauna of Colorado. 

 U. S. Geol. Surv. Prof, paper, No. Ki, 190.'j. Do: The Helalion of Some Carboniferous 

 Fauna. Proc. Washington Acad. Sei- 1905. F. L. Ransome: The Geology and Ore-deposits 

 of the Bisbee Quadrangle, Arizona. U. S. Geol. Surv. Prof. p. No. 21. 1904. 



2) Schellwien: Die î'auna des Karnischen Fusulinenkalks, p. 280. 



;>) B. F. SuuMARD : Notice of New Fossils from the Permian Strata of New ^lexico an<l 

 Texas. Trans. St. Louis Acad. Sei. Vol. L. 1858. 

 4) Schellwien : I.e. p. 251. 



.")) E. Spandel: Die Foraminiferen des Permocarbon von Ilooser, Ivans is, Nordamerika 

 0) Girty: Tlie L'pper Permian in Western Texas. Amer. .lourn. Sei. 1902. 

 T) Leplixlii!f — Li/ttoii!(i. 

 8) F. B. Merk: Description of the Carboni forons Fo-;;lls. Pal. Calif. Vol. 1, 1804. 



