C-32 



MARYLAND DARTER Etheostoma sellare 

 Order: PERCIFORMES 

 Family: PERCIDAE 



Estimated Numbers : There are evidently only one or two small populations, 

 with numbers unknown. 



Present Distribution : Found only in two streams in Harford County, Md. 



1. Deer Creek - This is a tributary of Susquehanna River, 1.3 

 miles southeast of Lanington along Stafford Road; second 

 riffle above mouth of the Creek; 20 to 30 miles above 

 Susquehanna. 



a. 34 specimens taken in State Park, May, 1965, by Dr. Raney 

 and Dr. Schwartz (Tsai, 1973). 



b. 8 specimens taken July, 1970, and October, 1971, by 

 Dave Thomas for private collection (Wang, 1973). 



c. No specimens taken after careful sampling along creek 

 10-15 miles in length, checking over 100 holes and 

 every few feet along course, upstream and downstream 

 from point where specimens were caught previously (Wang, 

 1973). 



2. Swan Creek - east Branch 



a. 2 specimens collected in 1912 by Radcliffe and Welsh; 

 the type specimen (see literature) . 



b. 1 specimen taken June 10, 1962, by Drs. Knapp, Richards, 

 Miller and Foster, probably for Smithsonian Institution 

 collection (see literature) . 



c. No specimens taken by Dr. Tsai summer of 1967 and 1968 

 after sampling (Tsai, 1973) . 



Status : Listed as endangered by USDI federal list of endangered species; 

 also as rare or extinct (2(a)S) by IUCN list. Nevertheless, both organi- 

 zations state "there are no data to support a statement that fish 

 have declined". Species is not extinct, as of 1970-71, but is con- 

 sidered endangered by Wang (1973) . Tsai (1973) considers species 

 very rare. 



