Described Species of Fresh H^afer Criisfaeea. 357 



2. G. FASciATUS Say. Jour. Phila. Acad, i, 379 (1817).— 

 DeKa;/. Nat. Hist. N. Y. vi, 87 {18U).—Smifh. Rep. U. S. 

 Fish Com. for 1872-73, GbS.— Forbes. Bull. Til. State Lab. N. 

 H., No. 1, 6 (1S76). 



//«^.— Maine {VWrill), Connecticut (Smith), Pennsylvania {Say), 

 Illinois (Forbes), Michigan (Milver), Wisconsin ( Verrill). 



3. G. LiMN.^us Smith. Rep. U. S. Fish Gom. for 1872-73, 

 651, 694; 7th Rep. U. S. Geol. Survey (Hayden), 609 (1874). 



G. iacusfris Smith. Amer. Jour. Science, 3rd ser., ii, 453 

 (1871). 



i/a/».— Michigan, Lake Superior and Colorado (Smith). 



4. G. MINUS Say. Jour. Phila. Acad, i, 374 (1817).— />^- 

 Kay. Nat. Hist. N. Y. vi, 37 (1844).— ^'VoM/f/. Invertebrata 

 of Massachusetts, 334 (1841).— Smith. Rep. U.S. Fish Com. 

 for 1872-73, 654. 



Hah.—^ew York(?). 



5. G. BOBUSTUS Smith. 7th Rep. U.S. Geol. Survey (Hay- 

 den), 610 (1874). 



//ai.— Colorado (Smith). 



FAMILY LYSIANASSID^. 

 I. PONTOPOREIA KroyER. 



1. P. FiLicoRNis Smith. Rep. U. S. Fish Cora, for 1872 

 -83, Q-iQ.— Forbes. Bull. HI. State Lab. N. H., No. 1, 20 

 (1876). 



Gammarus jilicornis Stimpson MSS. 

 JHaft.— Lake Michigan (Stimpson). 



2. P. HoYi Smith. Rep. U. S. Fish Com. for 1872-73, 

 647, ^4..— Forbes. Bull. HI. State Lab. N. H., No. 1, 20 

 (1876). 



P. affinis Smith. Amer. Jour. Science, 3rd ser., ii, 452 

 (1871). 



Gammarus Hoyi Stimpson MSS. 

 Gammarus breristylus Stimpson MSS. 

 fla6.— Lake Michigan (Stimpson), Lake Superior (Smilh). 



