516 PROCEEDINGS OF THE ACADEMY OF [Oct., 



Three examples before me from Lake Cassette do not indicate 

 these variations to be other than local or individual. 

 Salvelinus alpinus marstoni (Garman). 



Head 4 to 4f ; depth 4| to 6; D. usually iv, 9, i, rarely iv, 10, 

 I or IV, 8, i; A. usually iv, 8, i, sometimes iv, 9, i; scales in lateral 

 line with tubes about 106 to 123 to caudal base, and 3 to 10 more 

 on latter, the average about 7; 150 to 187 scales counted just above 

 L 1. its entire course to caudal base, and 5 to 12 more on latter; 

 32 to 34 scales above 1. 1. to dorsal origin; 30 to 34 scales below 1. 1. 

 to ventral origin; 68 to 73 predorsal scales; snout 3y to 3f in head, 

 measured from upper jaw tip; eye 6 to 7^; maxillary ly^^ to 2|; 

 interorbital 3| to 3J; gill-rakers of left side usually 8, seldom 7 + 12, 

 of right side usually 8, seldom 9 -|- 12, rarely 13; total length 12| 

 to 14f inches, of seven examples. 



Color when fresh, back deep olive to dusky, the latter shade mostly 

 over median line and color becoming more rich olive as it descends 

 the sides. Sides, in region of lateral line, marked by well-spaced 

 small red spots ocellated with very pale blue, though these last only 

 present when fish is taken from the water. Head dusky to olive 

 above, sides same, and lower surface whitish, with smutty tinge over 

 branchiostegals. Iris brownish or dusky, with narrow circle of 

 golden about dark pupil. Inside gill-openings pale. Dorsal and 

 caudal dusky-olive, with dusky shades on membranes of former. 

 Pectoral with whitish upper edge, on outer surface grayish medianly 

 above and lower surface orange-red, and on inner surface dark upper 

 median tint dusky-olive. Ventral orange-red, front and hind edges 

 whitish. Anal with front edge whitish, broad distal edge pale 

 orange and base pale dusky. Breast, belly, abdomen, and most all 

 of ventral region orange-red, though much paler posteriorly. 



When first studied I was inclined to consider these specimens as 

 a new form of char allied to the Salmo rnarstoni Garman. The points 

 of difference according to the original description are the very small 

 scales, about 230 in the series immediately above the lateral line,, 

 and more than 250 in a row 5 or 6 scales above this. The eye is 

 given as less than 5 in the head, the maxillary extending backward 

 almost as far as hinder edge of eye, and the gill-rakers 8 -{- 14. 

 From the above it is therefore quite likely these characters are really 

 individual variations. The spots of red along the lateral line are 

 imperfectly made out and their colors not sufficiently detailed in 

 the original description of Salmo marstoni Garman.^ Under the 



' Science, July 14, 1893, p. 23. Lac de Marbre, Ottawa County, Quebec. 



