‘ev. Bea 
eae 
THE NATURAL HISTORY SURVEY. 363 
XI. CHICAGO BIBLIOGRAPHY. 
The writer has been able to find but three papers (besides 
his own) relating to the Mollusca of the area under considera- 
tion. All available works have been carefullyexamined. The 
Chicago drainage area seems to have been but little studied. 
1. CATALOGUE OF ANIMALS OBSERVED IN Cook County, ILL. 
Prepared for the Illinois State Agricultural Society by 
Robert Kennicott, The Grove, West Northfield, Ill. (Transac- 
tions of the Illinois State Agricultural Society, Vol. I, 1853- 
1854, Pp. 595.) 
“ MOLLUSCA. 
flelix monodon Rackett. 
flelix profunda. 
Planorbis campanulatus Say. 
Planorbis trivolvis Say. 
Limnea reflexa Say. 
Limnea fragilis Linne. 
Limnea emarginata Say. 
Physa heterostropha Say. 
Paludina decisa Say. 
Melania carinata, 
Melania semicarinata Say. 
Unio alatus Say. 
Unio costatus Raf. 
Unio tris Raf. 
Unio bullatus Raf. 
Unio fragilis Raf. 
Unio luteolus Lam. 
Unto dilatatus Raf. 
Unto coccineus Hild. 
Unio cardium Raf. 
Unio parvus Barnes. 
Alasmodonta calceolata Late. 
Cyclas simtlis Say. 
Of the above, U. costatus=undulatus Barnes; U. tris=tris 
Lea (7); U. dullatus=pustulosus Lea; U. fragilis=gracilis Barnes; 
U. dilatatus=gibbosus Barnes; U. cardium=ventricosus Barnes; 
A. calceolata=calceola Lea; L. fragilis=stagnalis Linné; L. emar- 
ginata=catascopium Say; M. carinata=semicarinata Say, the 
latter a species not found in the present territory. The list 
shows how little was known at that time concerning the varied 
molluscan fauna of this region. 
2. NoTEs ON FRESH-WATER MOLLUuSCA FOUND IN THE VICINITY 
oF CuicaGo, ILL. 
BY W. W. CALKINS. 
Cincinnati Journal of Science, Vol. I, pp. 242-244, 1874. 
This paper lists the species of fresh-water shells and adds 
valuable notes on their habits and variability. The following 
species are listed: 
Limnea reflexa Say. 
Limnea zebra* Tryon. 
Limnea appressa* Say. 
Spherium simile Say. 
Spherium partumetum Say. 
Spherium transversum Say. 
