338 



THE CHICAGO ACADEMY OF SCIENCES. 



Geological Range (Figure 38): Pleistocene. Reflexa ranges 

 through a number of Pleistocene deposits within it^ present distri- 

 bution, but has not been found fossil as far north, east or south as 

 it now ranges. Kennedy's record' from the Brazos River valley, Rob- 

 ertson County, Texas, needs confirmation, as reflexa has not been 

 authentically reported south of Illinois. 



RECORDS. 



LCESS. 



Illinois : Base of Loess in bluff of mill creek, about five miles south of 

 Milan, Rock Island Co. (Leverett; Shimek; Udden). 



\^J 1 1 





A-j- 





. _. .... . . ■ 



r 



\ \A # * 



f*7\X 







wl? 



^£^1 



NR V*m ^ Mfc*JncTy r vfr 



Kd^Pw t TiSiA ^*^ \ 



T 



— kH^ 





Wk~, 



uijiS 





n* 



i : " u V^~j4 



/ 





■ ^J3T 





TlA-y 





m' Distribution of 

 |jL-- GALBA REFLEXA 





V; -XSk\J v 





pM; 



" 1 1 v^B 



^K \ \ ^^ 





1 V& 



^r 





1 1 V 







«5 



80 



15 



Fig. 37. 



Iowa : Bluffs bordering the Missouri River in the counties of Fremont 

 and Mills (Call). 



MARL DEPOSITS. 



Illinois: Clyde Avenue, near Austin Avenue, Chicago, Cook Co. (Scharf). 

 Michigan : Cut between section 24 and 25, Spaulding Township, Saginaw 

 Co. (A. C. Lane). 



Wisconsin: Milwaukee, Milwaukee Co. (Baker: Slocum). 



clay deposits. 

 Illinois: Le Barnes' clay pit. South Evanston, Cook Co. (Walcott). 



■An. Hep. Geol. Surv. Texas, IV, p. 66; p. 313, 1893. 



