352 NEW YORK STATE MUSEIUM 



placed high. The stomach is siphonal and with numerous 

 pyloric caeca, as in certain Salnionidae. The eggs are moder- 

 ately large and are excluded through an oviduct. Air bladder 

 present. The greatest hight of the body is about two ninths of 

 the total without caudal, the head about three elevenths. The 

 maxilla does not reach to the eye. The lower jaw is slightly 

 included. Scales in lateral line 47 to 50. 



Color pale olivaceous, or brown, the upper parts with rounded 

 dark spots made up of minute dots; a silvery median stripe, 

 becoming obsolete in front; peritoneum silvery. 



The trout perch is a common fish in the Great lakes and their 

 tributaries. It ranges north to Hudson bay, having been 

 obtained at Moose Factory by Walton Hayden, also from Nelson 

 river, near Rock Factory, by Dr Robert Bell. It has been 

 obtained in the Delaware river by Dr C. C. Abbott, in the 

 Potomac by Prof. Baird, in the Ohio by Drs Jordan, Henshall 

 and Bean, and Dr Gill has recorded the species from Kansas. 



Dr Meek obtained no specimens from Cayuga lake, but he 

 has no doubt it is found there. The U. S. Fish Commission had 

 it from Lake Ontario, Nine Mile point, near Webster N. Y., in 

 1893; also from Cape Vincent and Grenadier island. The fish 

 is a resident of Lake Champlain, in which it was first discovered 

 by Thompson, several years before Agassiz secured it in Lake 

 Superior. 



The trout perch is too small to be valuable for food, but is 

 doubtless an excellent bait. It is one of the most remarkable 

 fishes of our fresh waters, combining as it does the characters 

 of the salmon and some of the perches. Its name indicates 

 this singular relationship. It is voracious, takes the hook 

 freely, and spawns in the spring. 



Suborder XENARCHI 

 Family APHREDODERIDAE ; 



Pirate Perches 



Genus APHREDODERUS Le Sueur 



Body oblong, elevated at the base of the dorsal, compressed 

 behind, the head thick and depressed, the profile concave; 



