SALMONOID FISHES OF THE GREAT LAKES. 25 
reaching beyond halfway to former, about equal to distance between snout and occiput. Anal rather 
short, 2.4 in head, concave. 
Color in spirits silvery, suffused with brownish and slight dark above lateral line, below silvery 
white or colorless, cheeks silvery ; fins colorless, save for slight edging of black on dorsal and caudal. 
Besides these specimens, which resemble each other closely and belong to the same species, we 
have others not differing at all externally, in which the average number of gillrakers runs from 12+25 
to 14+28. All these are from Lake Huron, off Cheboygan, and approach Leucichthys prognathus. 
Evermann & Smith (Report U. S. Fish Commission for 1894, p. 31 1) note the finding of similar examples, 
five from Lake Michigan and three from Lake Superior, which they refer provisionally to hoyi, although 
recognizing the close relation to prognathus . They say: “ In the numerous specimens of hoyi examined, 
the average number of gillrakers was found to be 39, while for the 8 specimens here considered the 
average is but 31)+” These specimens from Lake Michigan we refer to L. johannce, those from Lake 
Superior provisionally to L. supernas. The specimens from Lake Michigan which differ from the 
type of Leucichthys johannce we may regard for the present as a variation of the latter. We here pre- 
sent a description of this form. 
Description of the bloater of Lake Huron with many gillrakers ( Leucichthys johannce , var. B.): 
Seven specimens from 6.25 to 9 inches in length; one 8.5 inches in length, no. 5277 here 
described; all from Lake Huron, off Cheboygan, Mich. 
Head 4 in length to base of caudal; depth 4; length of caudal peduncle from last ray of anal to 
first of caudal 2.4 in head, depth 3.25; eye 4; snout 3.57; interorbital space 4; length of maxillary from 
tip of snout 2.3 in head; dorsal 10 (developed rays); anal 12; scales 8-79-7; branchiostegals 9; gill- 
rakers 14+26. 
Body moderately elongate, more convex in ventral outline, not greatly compressed, its width 1.66 
in body depth; caudal peduncle rather long and slender, its width 1.5 in depth; ventral outline along 
base of anal tapering more abruptly to caudal peduncle than dorsal outline; head long as in L. zenithicus ; 
dorsal surface slightly arched from snout to occiput, and from eye to eye; snout bluntly rounded, not 
tapering much; underjaw projecting; dentaries meeting at a slight angle to form a dorsal tubercle at 
symphysis; premaxillaries breaking contour of head but slightly; anterior ends of preorbitals and 
maxillaries protruding laterally somewhat to give bluntly rounded appearance to snout; maxillaries not 
lying closely to head along their whole length, extending to below middle third of eye; supplemental 
0.5 maxillary breadth (in other specimens 0.66); distance from snout to occiput long, from 0.5 to 0.57 of 
distance between occiput and dorsal fin; opercular breadth slightly more than length of snout; lateral 
line straight; scales moderate in size, easily detached, and smaller posteriorly. 
Dorsal fin inserted nearer base of caudal than tip of snout, moderately high, its longest ray about 
1.5 in head, its base 2.5, border truncate; adipose moderate, from insertion to tip nearly equal to snout, 
its height 0.33 length ; ventrals and pectorals as long as dorsal ray, pectorals reaching halfway to ventrals; 
anal somewhat concave; caudal forked widely. 
Color in spirits not very silvery, suffused with brownish, but slightly darker above; fins clear, save 
for dusky margin of dorsal and caudal; slight trace of black on pectorals; lateral line sometimes marked 
distinctly, sometimes very faintly with a line of black. 
Whether Leucichthys johannce can be separated as a species from L. prognathus is uncertain; as there 
can be no connecting forms, it is a distinct species or nothing. 0 * 
a The following is Mr. Wagner’s original description of this species: 
Head. 4.1 in length to base of caudal; depth, 3.8; eye, 6.5 in head; depth of caudal peduncle, 3.1; snout, 3.4; max- 
illary, 2.6; mandible, 2; height of dorsal fin, 1.5; distance from snout to dorsal, 1.9 in length; gillrakers, 10+19; longest, 
1 in eye; dorsal, 10; anal, 12; scales, 9-80-8. 
Body deep, not greatly compressed, back strongly arched, rising rapidly for one-half the distance from snout to dorsal, 
then more gradually. Caudal peduncle high, not greatly compressed. Head small, sharply wedged-shaped, its height at 
occiput 1.9 in height of body. Eye small. Lower jaw even with upper; maxillary reaching nearly to center of eye. 
Gillrakers coarse and widely set. Lateral line straight. Scales large and thick, nondeciduous. 
Color (in formalin): Lips and head pale; body dark above but not nearly to lateral line; quite pale below. Dorsally 
some indication of stripes, longitudinally. Dorsal and caudal fins with black edges, other fins pale. 
