340 Illinois State Laboratory of Natural History. 



6. C. PARVA Herrick. Amer. Nat. xvii, 504 (1883). 

 Hob. Minnesota (Herrick). 



1. C. SCITULA Herrick. Final Report, 40 (1884). 

 Hob. Minnesota (Herrick}. 



III. SOAPAOLEBEBIS ScHODL. 



1. S. ASTGULATA Herrick. Amer. Nat. xvii, 502 (1883); 

 Final Report, 44(1884). 



Hob. Mississippi and Alabama (Herrick}. 



2. S. ARMATA Herrick. 10th Rep. Geol. Minn. 243 ( 1882) ; 

 Final Report, 43 (1884). 



Hob. Alabama and Minnesota (Herrick). 



3. S. AURITA Birge in Herrick's Final Report, 175 (1884). 

 S. nasuta Birge. Trans. Wis. Acad. iv,.85 (1877). Her- 

 rick. Final Report, 43 (1884). 



Daphnia aurita Fischer. Bull. Naturforsch. Gesellsch. in 

 Moscau, xxii (1849). 



Hab. Wisconsin (Birge). 



4. S. MUCRONATA Schodler. Branchiopoden der Umge- 

 gend von Berlin, 23 (1858). Birge. Trans. Wis. Acad. iv. 84 

 (1811). Herrick. 10th Rep. Geol. Minn. 241 (1882); Final 

 Report, 42 (1884). 



Daphnia mucronata Miiller. Entomostraca, 94, t. xiii, figs. 

 6, 7 (1785). Herrick. 7th Rep. Geol. Minn. 104 (1879). 

 Hab. Eastern United States. 



IV. SlMOCEPHALUS ScHODL. 



i 



1. S. AMERICAKUS Birge. Trans. Wis. Acad. iv, 82 (1877). 

 Herrick. Final Report, 47, 49 (1884). 



Hab. Mississippi and Minnesota (Herrick); Wisconsin (Birge). 



2. S. DAPHNOIDES Herrick. Amer. Nat. xvii, 503 (1883); 

 Final Report, 48 (1884). 



Hab. Alabama (Herrick). 



3. S. ROSTRATUS Herrick. Final Report, 47 (1883). 

 Hab. Mississippi (Herrick). 



