Natural History of District of Columbia— McAtec 43 



A revision of the rotatorian genera Lepadella and Lophocharis 

 with descriptions of 5 new species. 

 Proc. U. S. Nat. Mus. 51, pp. 527-568, Dec. 21, 1916. 

 6 species from District of Columbia region, 1 new. 



FISHES. 

 Although uninteresting to many students of natural his- 

 tory, fishes, in the region of the District of Columbia have 

 received more attention than any group of vertebrates except 

 birds. Three principal lists have been published and the 

 number of species recorded now stands at 94. At least 14 

 of these species are known to have been introduced into 

 rhe Potomac as food fishes ; this number includes the spotted 

 and forked- tail catfishes, carp, goldfish, tench, ide, two 

 species of crappie, at least one sunfish, the goggle-eye, 

 warmouth, the large-mouth and small-mouth black bass and 

 the wall-eyed pike. 



The fact that tide- water ends in our vicinity makes the 

 distribution of fishes particularly interesting. The number 

 of true salt-water fishes that stray far enough upstream to 

 be included in the District fauna is now placed at 14. 

 Among these fishes are a shark, the menhaden, an anchovy, 

 a Cyprinodon, the silvergar, the pipefish, pigfish, spot, whit 

 ing, angel -fish, a goby, toadfish, sea-robin and sole. 



Of the anadromous fishes or those which run up from salt 

 water to fresh to spawn, we have 5 ascending as far as 

 Little Falls, namely, two species of sturgeons, and 3 of 

 herrings, and 3 that keep on Great Falls, these being the 

 shad, striped bass and white perch. It is recorded 2 " also 

 that an Atlantic Salmon was caught in the Potomac about 

 June 10, 1885. In addition to these there is the lamprey 

 which runs into all sorts of small streams to spawn, and the 

 eel which spawns in salt water and after ascending the 

 river reaches almost all bodies of water, even those appar- 

 ently isolated. These fishes are of coastal affinities, but 

 we have one species definitely characteristic of the higher 

 western country, that being the brook trout, which has been 

 found in Difficult Run, Va. 



»Wooldridge, J., Natural Advantages of the City of Washington D C 

 1892, p. 38. "' 



