33 



This fish was introduced here years ago, but without any 

 apparent success. 1 



Salvelinus fontinalis {Mitch.). 

 Brook or Speckled Trout. 



Head large, snout blunt, mouth very large, eye large, cau- 

 dal not deeply cut. Dusky with darker blotches above, sides 

 greenish, bluish and silvery below, belly reddish in males. 

 Dorsal and caudal barred or vermiculated, lower fins dusky 

 with red or orange, sides with small red spots. When found 

 in brackish water they are more silvery and grow heavier. 

 D. 10, A. 9. Scales 37-230-30. Size up to twenty inches. 



Found in the northern United States and Canada and along 

 the Alleghanies south to Georgia. 



The young are much barred and not very like the adult in 

 appearance, and were described as Baione fontinalis hy DeKay. 

 The range of this fish also has been much extended by man. 



Family Poeciliidae. 



KlEEIFISHES. 



Body oblong, depressed in front, compressed posteriorly ; no 

 lateral line, head and body scaly ; mouth small, terminal, pro- 

 tractile, fully toothed. A single dorsal far back. Caudal 

 truncate or rounded. Stomach siphonal, no pyloric caeca ; air 

 bladder simple. The sexes mostly unlike, the males during 

 the breeding season often brilliantly colored. 



A large, mostly brackish water family of nearly universal 

 distribution. 



Small fishes which serve as food for others. With us com- 

 monly called "killies." 2 



The family is subdivided into carnivorous and limnophagous, 

 but many of them are indiscriminate feeders. 



Cyprinodon variegatus Lac. 

 Sheepshead or Pursy Minnow. 

 Body short, compact. Male bluish, of a weak reddish tinge 

 below ; caudal with black bar at base and tip ; female oliva- 

 ceous, more silver on sides with dark irregular cross streaks. 



1 See New Jersey State Geologist, Final Report, cited above. 



2 From the Dutch word " kill," meaning creek. 



