182 FISHEKIES OF THE UNITED STATES. 



RESULTS OF WOEK. 



1. Publications of the Commissiou — Continued. 



Appendix F— Continued. 



XXIV. On obstructions to the ascent of fish— Continued 



A. Obstructions in the rivers of Maine^Continued. Page. 



Medomac River 61& 



Damariscott.i Eiver 619 



Sheepscot Kiver 619 



Kennebec and tributaries 619 



Presumpscot Kiver 621 



Saco Kiver and tributaries 621 



ilousam Kiver 621 



Salmon Falls Eiver 621 



B. Obstructionsinthetributariesof Lake Cham- 



plain. By M. C. Edmunds 622 



Lake Champlain 623 



Saint Lawrence River and Lake Ontario 627 



C. Obstructions in so:ne of the rivers of Vir- 



ginia. By M. McKennie 629 



D. Character of the streams on the northern 



shore of Lake Michigan. By J. F. 



Ingalls 630 



Pensuakee River 630 



Oconto Eiver 630 



Peshtigo Eiver 630 



Menonionee Eiver 630 



Cedar Eiver 631 



Barque Eiver C31 



Ford River 631 



Escanaba River 631 



Whitefish River.. 632 



Sturgeon and Fish-dam Rivers 632 



Monistique River 632 



Seul Choix River 632 



E. Characters of some of the northern tribu- 



taries of Lake Michigan. By James 



W. Milner ' C32 



Appendix F.— Natural history 635 



XXV. Tlie Crustacea of the fresh waters of the United 



States. By Sidney L Smith 637 



A. Synopsis of the liigher fresh-water Crustacea 



of the Northern United States 637 



Macrura 637 



Family Astacidaj 637 



Fami ly Pal temonidie 640 



Family PemeidfE 642 



Schi wpoda 042 



Family Mysid:c 042 



Amphipoda.. 645 



Family Orchestidne 645 



Family Lysiauassid;e 647 



Family Gammarid;t 651 



Isopoda 657 



Family Asellidie C57 



B. The crustacean parasites of the fresh-water 



fishes of the United States 661 



Family Argulida; 662 



Family Caligidte 662 



Family Lernreopodida; 662 



Family Lernreoceridffi 065 



XXVI. Synopsis of the Nortli American fresh-water 



leeches. By A. E. Verrill 666 



Genus Macrobdella 667 



Genus Aulastomum 670 



