1 14 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
eye behind to upper caudal lobe a gray-brown band about as wide as 
eye. From below eye behind a dusky-brown band to caudal base, 
where ending in small black spot. Median caudal rays dusky basally, 
as continuation of dark lateral band, which fades out somewhat to- 
ward end of fin. Sides below lateral band, also sides of head, white. 
On upper costal region below dark lateral band, and below it on side 
of head, some dusky specks or dustings. Snout, and edge of lower 
jaw, especially in front, somewhat dusky. Dorsal and caudal pale 
grayish. Pectoral grayish above, becoming whitish below. Ventral 
and anal whitish. Iris silvery gray. 
Length lyf to 3 ^^ inches. 
A large series of adult breeding fishes, from Otter Pond Camps in 
Somerset County, Maine (W. J. Epting), June, 1905. When fresh 
in alcohol the adult male was colored deep olive-brown on the back. 
The dark lateral band was a rich deep dusky or brownish black. 
The pale area above this was bright vermilion, and below for a rather 
narrow area along its extent this shade Avas also perceptible. The 
pale lower portions were bright silvery white, also the iris. Fins 
largely transparent, dorsal and caudal well diluted olive-dusky, also 
upper pectoral rays, other fins tinted whitish. The breeding male dif- 
fers from the breeding female in its comparatively shorter size, slightly 
more convex snout, patch of closely crowded even tubercles above 
base of anal continued back on each side of lower surface of caudal 
peduncle towards the rudimentary caudal rays, and the swollen pec- 
toral rays, especially the uppermost or first simple one. The adult 
breeding female is more elongate, with chubby belly, snout not espe- 
cially convex above, without tubercles, rays of pectorals not expanded, 
and both latter and ventrals much shorter. 
Seven examples of this large series seem to indicate a well-marked 
variety. They differ in the following respects from the others. The 
body is decidedly more slender, fusiform and tapering. The general 
form of the young, particularly the caudal peduncle, is more slender 
than that of young examples from other localities. The maxillary 
barely reaches opposite the front edge of the eye, and at no age slightly 
beyond. The dark median lateral band from the eye is at all times 
more slender than that of other examples, though in the young of 
other series it is of about equal width with that of the present variety. 
The lateral line falls well short of the ventral, in one example com- 
prising about five tubes, and in another it is absent. In all ages 
