SALMONOID FISHES OF THE GREAT LAKES. 
9 
Comparison oj specimens of Leucichthys harengus. 
Lake Huron. 
L. harengus. 
Lake Superior. 
L. harengus arciurus. 
Lake Michigan. 
L. harengus. 
Colling- 
wood. 
Blind 
River. 
Mar- 
quette. 
Knife 
River. 
Duluth. 
Pine, 
Ind. 
Specimen no. . 
5267 
5283 
5271 
s=s6 
5210 
5288 
5290 
Length without caudal mm. . 
243 
215 
255 
253 
238 
215 
245 
Dorsal rays 
10 
1 1 
10 
1 1 
I I 
10 
10 
Anal rays 
12 
1 1 
12 
12 
12 
12 
1 2 
Scales 
Scales between occiput and dorsal 
10-83-9 
9-85-9 
9-80-8 
10-79-8 
9-86-8 
9-90-8 
9-80-8 
fins 
33 
34 
34 
33 
35 
38 
38 
Branchiostegals 
9 
9 
9 
9 
9 
9 
8 
Gillrakers 
Comparative measurements: ® 
16 +31 
16 +29 
16 +30 
16 +3° 
16 +30 
18+35 
17+31 
Head 
0. 23 
0. 22 
0. 225 
0. 23 
0. 22 
0. 23 
O. 235 
Depth of body 
Caudal peduncle, length from anal 
• 23 
. 20 
. 21 
. 22 
. 20 
. 21 
• 205 
to point of caudal rays 
. 10 
. 12 
. 12 
. 1 1 
. 1 1 
. 1 1 
• 103 
Caudal peduncle, depth (least) .... 
• 075 
. 07 
. 07 
. 07 
• 07 
. 07 
. 07 
Eye 
• 055 
• 05 
• 05 
•05 
• 05 
• 05 
• 05 
Snout from eye 
■ 055 
• 05 
. 06 
. 06 
• 05 
• 055 
. 06 
Interorbital space 
. 065 
. 06 
. 065 
. 065 
. 06 
. 06 
• 065 
Maxillary length from tip of snout . 
• 075 
. 07 
.08 
.08 
• 075 
. 07 
• 075 
Snout to occiput 
. 16 
• IS 
. 16 
• 15 5 
• 15 
• 155 
. l 6 
Ventrals to pectorals 
Pectoral length in ventral-pectoral 
• 35 
.31 
• 32 
• 32 
• 32 
• 325 
■ 31 
distance 
2.25 
2 . 20 
2. 125 
2. 25 
2 . 00 
2 . 00 
2 . OO 
Pectoral length 
. 16 
. 14 
• 15 
. 14 
• 155 
• 155 
. l 6 
Ventral length 
• 14 
• 13 
• 14 
. 14 
. 14 
• 15 
• 15 
Dorsal height 
. 14 
. 12 
• 135 
• 135 
. 14 
. 14 
• 15 
Adipose length 
• 05 
. 04 
• 055 
• 055 
. 06 
• 05 
• 05s 
Anal height 
• 09 
. 085 
.09 
.08 
. 09 
. 09 
• 09 
a Measurements in hundredths of body lengths unless otherwise specified. 
Leucichthys osmeriformis (Smith). Seneca Lake Herring; Seneca Lake Smelt. 
Coregonus osmeriformis Smith, Bull. U. S. Fish. Comm., vol. xiv, 1894, pi. 1, 2, Seneca Lake; Skaneateles Lake. 
Evermann & Smith, Rept. U. S. Fish Comm. 1894, p. 305, 1896; same specimens. 
Distribution: Lakes of central New York, tributary to Lake Ontario. 
We have examined the type (from Seneca Lake, New York) and the 4 cotypes (from Skaneateles 
Lake, New York) of this species, which is locally known as smelt. It is one of the smallest species and 
is allied to Leucichthys harengus, with which it agrees in the slender body and very small adipose fin. 
It differs from that species, however, in the considerably longer maxillary, longer and decidedly project- 
ing lower jaw, larger eye, and longer head. 
The following is the substance of the account given by Doctor Smith, whose figure we copy (fig. 
21, p. 40): 
Head 3.9; depth 5; eye 3.9; dorsal 9; anal 13; scales 9-83-10; maxillary 2.6. Body elongate, 
slender, back not elevated; head rather large, its width equal to half its length; length of top of head 
2.25 in distance from occiput to dorsal, greatest depth considerably less than length of head; eye 
large, equal to snout; gillrakers very long and slender, as long as eye, 20+35; dorsal fin rather high, its 
height equal to 0.8 depth of body and 1.5 times length of base of fin, its origin nearer base of caudal 
than snout, its free margin nearly vertical, straight; longest anal ray 0.8 length of base of fin ; ventral long, 
equal to height of dorsal, its length equal to 0.75 of distance from ventral origin to vent; ventral origin 
midway between base of caudal and pupil; adipose dorsal very small, described as long and slender, of 
same width throughout, its width 0.33 its length. Mouth large, the lower jaw projecting, the snout 
straight; maxillary 3 in length of head, its posterior edge extending to line drawn vertically through 
anterior margin of pupil; mandible 0.5 length of head, its angle under the pupil; teeth present on the 
tongue. Color above grayish silvery; sides bright silvery; below white; tips of dorsal and caudal dark. 
Length 10 inches. Known from Seneca and Skaneateles lakes, but probably occurring in other deep 
lakes of central New York. 
