Vol. XXIV, pp. 171-174 June 16, 1911 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



RECENT ADDITIONS TO THE FISH FAUNA OF THE 

 DISTRICT OF COLUMBIA. 



BY BARTON A. BE AX AND ALFRED C. WEED. 



[Published by permission of the Secretary of the Smithsonian Institution.] 



Since the publication of the list of fishes of the waters of the 

 District of Columbia and vicinity by Smith and Bean* several 

 species not there listed have been taken. Some of these have 

 been introduced by agents of the Bureau of Fisheries, others 

 which were present were overlooked in the making of the col- 

 lections previously listed. 



In view of the changes in fish fauna which are being made 

 by the introduction of new species in various waters it seems 

 advisable to publish, as soon as possible, notes on the appear- 

 ance of species in waters foreign to their natural habitat. 



According to U. S. National Museum records the large mouth 

 black bass was present in the Potomac long before the elate 

 given by Smith and Bean (1889). No. 16,841 of the Museum 

 register reads: ' Black bass, M. salmoides, upper Potomac, 

 weight 4 lbs. 11 ozs., Major Hobbs, Washington, D. C." This 

 fish was cast in plaster by Mr. Jos. Palmer, cast No. 602, date 

 November 1, 1876. We have recently seen the mold of this 

 specimen and there is no doubt as to its identity. 



Ictalurus furcatus (La Sueur). 

 Dr. Hugh M. Smith kindly furnishes the following note on the occur- 

 rence of this species in the District of Columbia: 



' In 1905 the fishermen about Washington began to catch this species, 

 and samples were submitted to the Bureau of Fisheries for identification. 

 There is no record of the introduction of the species and it is evident that 

 it was not distinguished from /. punctata* at the time the young were 

 planted. Specimens weighing over thirty pounds have been reported." 

 •Bull. IT. S. Fish. Com., vol. 18 (1898), pp. 179-187. 



30— Proc. Biol. Soc. Wash., Vol. XXIV, 1911. (171) 



