Vol. XIII, pp. 75-78 September 28, 1899 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW TREEFROG FROM THE DISTRICT OF 



COLUMBIA.* 



BY (iERRIT S. MILLER, Jk. 



Ill June, 189o, Mr. W. P. Hay added to the known fauna of 

 tlie District of Columbia f a treefrog which he found in con.sid- 

 erable numbers in a marsh at Mount Vernon, Virginia. He {)re- 

 sented eighteen specimens of tlie animal, identified as Hyla cinerea 

 (Daudin) (=H. ' carolinens is'' ), to the United States National 

 .Museum. Two years later Mr. Hay collected si)ecimens at Little 

 Hunting Creek, Va. Four of these are now in the National Mu- 

 seum. This frog was first brought to my notice early in June, 

 LSV)8, when, in company witli Mr. A. H. Howell, I heard its notes, 

 stiMkingly diff'erent from those of the otlier l)atrachians of the 

 region, at Four Mile Run, Va. A week later seven were captured 

 li^re l)y Mr. Howell and Mr. E. A. Preble. Since then we have 

 taken, in the marshes at Four Mile Run and Dyke, a locality 

 l)etween Alexandria and Mount Vernon, Virginia, about thirty 

 individuals, some of whicli I have had in captivity for over a 

 year. Com{)arison of these with living exami)les of Hyla cinerea 

 from Bay St. Louis, Miss., shows that the northern and southern 

 forms are readily distinguisliable from each otiier by characters 

 of both form and color. Most conspicuous among these is the 

 normal absence in the northern animal of the stripes on sides 



* Published by permission of the Secretary of tho Smithsonian Institu- 

 tion. 



t The ' fauna of the District of Columbia ' is generally understood to in- 

 clude that of the region within a radius of twenty miles from the Capitol. 



I'.i— Biol. Sdc. Wash., Vol.. XIIF, l.S'.il) (T'l) 



