356 Illinois State Lahoratory of Natural History. 



ORDER AMPHIPODA. 



FAMILY GAMMARID^. 

 I. Crangonyx Bate. 



1. C. ANTENNATUM Packard. Amer. Nat. xv, 880 (1881). 

 Ilah. — Tenuessee {Packard}. 



2. C. BiFURCUS Hay. Amer. Nat. xvi, 144 (1882). 

 Hab. — Mississippi [Ilay). 



3. C. GRACILIS Smith. Amer. Jour. Science, 3rd ser., ii, 

 453 (1871); Rep. U.S. Fish Com. for 1872-73, 654,694.— 

 Forbes. Bull. 111. State Lab. N. H. No. 1, 6 (1876).— i^r/y. 

 Amer. Nat. xvi, 241 (1882). 



Hall. — Indiana {Hay), Illinois {Forbes), Lake Superior ai'd Lake 

 Huron {Smith). 



4. C. LUciFUGUS Hay. Amer. Nat. xvi, 144 (1882). 

 Ilab. — Illinois {Hay). 



5. C. MUCRONATUS Forbcs. Bull. 111. State Lab. N. H., 

 No. 1, 6 {181Q).—Hatj. Amer. Nat. xvi, 241 (1882). 



Hab. — Indiana {Hay), Illinois {Forbes). 



6. C. Packardii Smith. Amer. Jour. Science, 3rd ser., 

 ix, 476-7 (1875). 



C. vitreiis Packard. 5th Rep. Peabody Acad. Science, 95 

 (1873). 



Hab. — Indiana {Packard). 



7. C. TENUIS Smith. Rep. U. S. Fish Com. for 1872-73, 

 656. 



Hab. — Connecticut {Smith). 



8. C. viTREUs Smith. Rep. U. S. Fish Com. for 1872-73, 

 656; Amer. Jour. Science, 3rd ser., ix, 476-7 (1875). 



Stygobroniiis vitreus Cope. Amer. Nat. vi, 422 (1872); 

 3rd and 4th Rep. Geol. Indiana, 181 (1872). 

 Hab. — Mammoth Cave, Kentucky {Cope). 



II. Gammarus Fabr. 



1. G. APPENDICULATUS Say. Jour. Phila. Acad, i, 379 

 (1817).— DeA'ay. Nat. Hist. K Y., vi, 37 (1844). 

 Hab. — Georgia {Say). 



