FISHES OF NEW YORK 515 



spring; males black. A dark streak forward from the eye and 

 another downward. 



This darter secretes itself on the bottom in small clear brooks, 

 swimming rapidly for a short distance when alarmed. The sexes 

 are very different in appearance, the males having higher and 

 more brightly colored fins than the females. The males are 

 larger than the females and in the spring are much spotted with 

 black. The common darter, or tessellated darter, is found from 

 Massachusetts to Georgia. It is replaced in Cayuga lake and 

 some other regions to the southward by a black spotted variety, 

 which differs from the common form still further in having the 

 nape and breast closely scaled. De Kay states that it occurs 

 in most of the fresh-water streams of the state. It is found in 

 Lake Champlain. Evermann and Bean took it in Scioto creek, 

 at Coopersville, in the Saranac, at Plattsburg, in the St Law- 

 rence river, 3 miles below Ogdensburg, and in Racket river, at 

 Norfolk. In the Lake Ontario region the U. S. Fish Commission 

 collectors obtained it in the following localities: 



Cape Vincent June 21 



Mud creek, Cape Vincent June 25 



Grenadier island June 27 



Horse island, Sackett's Harbor June 30 



Mill creek, Sackett's Harbor July 2 

 Stony Island July 2 and 3 



Little Stony brook, Henderson bay July 4 



Cemetery creek, Watertown July 5 



Guffon creek, Chaumont July 7 



Chaumont river July 10 



Spring brook, Pulaski Juh r 24 



Mouth of Salmon river, Selkirk July 25 



Mouth Little Salmon creek July 25 



Three Mile creek, Oswego July 27 



Great Sodus bay Aug. 6 



Long pond, Charlotte Aug. 17 



Sandy creek, North Hamlin Aug. 20 



