260 NEW YORK STATE MUSEUM 



maxilla. The maxilla reaches to or slightly beyond the hind 

 margin of the eye. Teeth rather strong, those in the intermax- 

 illary and mandible the largest, triangular head of vomer with 

 two or three in a transverse series at its base, teeth on the shaft 

 of the vomer usually in a single, partially zigzag, persistent 

 series. Mandible without a hook and little produced even in 

 breeding males. Dorsal origin distant from tip of snout about 

 as far as end of dorsal base from base of caudal; the dorsal fin 

 higher than long, its base one eighth of total length without 

 caudal, its longest ray equal to longest ray of anal fin. The 

 anal fin is much higher than long, its distance from the base of 

 the ventral equaling length of the head. The ventral origin 

 is nearly under the middle of the dorsal; the fin being as long 

 as the postorbital part of the head. Pectoral equals length of 

 head without the snout. Adipose fin very small, its width one 

 half its length which is about equal to eye. Caudal fin emargi- 

 nate unless fully extended, when it becomes truncate, the outer 

 rays about one seventh of total length including caudal. D. 13 

 (= iv, 9); A. 12 (=iii, 9); P. 14; V. 9. Scales 24 to 28-118 to 

 130-26 to 30; pyloric caeca 47 to 90; vertebrae 56 to 59. 



Upper parts brownish or greenish olive, or sometimes with a 

 reddish tinge, sides silvery with a varying number of x-shaped 

 black spots, or sometimes rounded brown spots or rounded black 

 spots which may be ocellated; occasionally red spots are seen 

 on the sides, and the adipose fin may have several bright orange 

 spots, or it may show a red edge and several dark spots; sides 

 of the head with round black spots; dorsal and adipose fins 

 usually with numerous small brown spots; tip of pectoral black- 

 ish; anal and caudal fins unspotted, but the caudal sometimes 

 has an orange margin and the anal a white edge with black at 

 its base; a similar edge may sometimes be observed on the 

 ventral. 



The Loch Leven trout is a nonmigratory species, inhabiting 

 Loch Leven and other lakes of southern Scotland and of the 

 north of England. Its range in Great Britain and on the con- 

 tinent of Europe has been greatly extended by fish cultural 



