Described Sjierics of Fresh Water Crustacea. 355 



3. B. VERXALis Yerrill. Anier. Jour. Science, 2cl ser., 

 xlviii. 25 (1869); Proc. A. A. A. S. for 1869, Ci22.— Packard. 

 7th Hep. U. S. Geol. Survey (Hayden), 622 (1874); 12th Rep. 

 U. S. Geol. Survey (Hayden), ii, 342 (ISS^). — Gissler. Anier. 

 Nat. XV, 136 (ISSl).— Ha >/. Amer. Nat. xvi, 242 (1882). 



ITab. — Massadiusetts, Rhode Island, Connecticut, New York, Penn- 

 sylvania, Ohio, Indiana. 



IV. Chirocephalus Preyost, 



1. C. HoLMAXi Ryder. Proc. Phihi. Acad. 1879, U8.— Park- 

 ard. 12th Rep. U. S. Geol. Survey (Hayden ), ii. 351 (1883).— 

 Ilrrrirk. Bull. Scientific Lab. Denison Univ. i, 19 (1885). 

 //«/>.— New York, Pennsylvania, Minnesota. 



V. Strbptocephalus Baird. 



1. S. Floridanus Packard. Amer. Nat. xiv, 53 (1880); 

 12th Rep. U. S. Geol. Survey (Hayden), ii, 350 (1883). 



ITab.— Florida. 



2. S. Sealii Ryder. Proc. Phila. Acad. 1879, 200.— 

 Packard. 12th Rep. U. S. Geol. Survey (Hayden), ii, 348 

 (1883). 



Uab. — New York, New Jersey. 



3. S. Texaxus Packard. Amer. Jour. Science, 3rd ser., ii, 

 111 (1871); 7th Rep. U.S. Geol. Survey (Hayden), 622 (1874); 

 12th Rep. U.S. Geol. Survey (Hayden), ii, 345 (1883). 



S. Watsoni Packard. Bull. U. S. Geol. Survey (Hayden), 

 iii, 176 (1877). 



Hah. — Kansas, Texas. 



VI. ThamnOCEPHALUS Packard. 



1. T. platyurus Packard. Bull. U.S. Geol. Survey (Hay- 

 den), iii, 175 (1877); 12th Rep. U. S. Geol. Survey (Hayden), 

 ii, 353 (1883). 

 IFab. — Kansas. 



