Described Species of Fresh Water Crustacea. 357 



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

 DeKay. Nat. Hist. N. Y. vi, 37 (1844).— *S;;;/7//. Rep. U. S. 

 Fish Com. for 1872-73, Q>m.— Forbes. Bull. 111. State Lab. N. 

 H., No. 1, 6 (1876). 



Uab. — Maine (Verrill), Connecticut (Smith,), Pennsylvania {Say), 

 Illinois (Forbes), Michigan [MUr'-er), Wisconsin ( Verrill). 



3. G. LiMN.^iTS Smith. Rep. U. S. Fish Com. for 1872-73, 

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



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

 (1871). 



Ilah. — Michigan, Lake Superior and Colorado (Smith). 



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

 Kai/. Nat. Hist. N. Y. vi, 37 (18U).—GouJ(I. Tnvertebrata 

 of Massachusetts, 334 {184:l).Smith. Rep. U.S. Fish Com. 

 for 1872-73, 654. 



Hab.—'i^ew York(?). 



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

 den), 610 (1874). 



IlaJi. — Colorado [SmitJi). 



FAMILY LYSIANASSID^. 



I. PONTOPOREIA KroYER. 



1. P. FiLicoRNis Smith. Rep. U. S. Fish Com. for 1872 

 -83, Q49.— Forbes. Bull. HI. State Lab. N. H., No. 1, 20 

 (1876). 



Gammarns filicornis Stimpson MSS. 

 i/a/).^Lake Michigan (Stimpson). 



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

 647, m4..— Forbes. Bull. 111. State Lab. N. H., No. 1, 20 

 (1876). 



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



(1871). 



Ganunarus Hoiji Stimpson MSS. 

 Gammarns brcristijl as ':'^tmi\)iion MSS. 

 Hah. — Lake Michigan {Stimpmn), Lake Superior iSinitJi). 



