SALMONOID FISHES OF THE GREAT LAKES. 
13 
Color in life, clear metallic blue above, silvery below; in spirits, silvery, dusky above, light below; 
a very indistinct, narrow, dusky stripe along each row of scales on upper half of body; dorsal with a 
broad dusky margin; caudal largely dusky ; a mere trace of dark color on paired fins and the anal. 
The type, no. 62516, U. S. National Museum, a female, measures 14.75 inches in length and was 
taken at Port Stanley, Ontario, by the writers, on July 29, 1908. A cotype, no. 13082, Stanford Uni- 
versity collection, measuring 17 inches long, has 10 rays in the dorsal and a slightly longer pectoral. 
The flesh of this species is rather dry and flavorless, something like that of the Menominee white- 
fish, Coregonus quad rilat era lis, and it is not to be compared as a food fish with the Erie herring. 
Comparison of specimens of Leucichthys sisco huronius. 
Erie. Pa. 
Port Huron. 
Specimen no. . 
493 2 
4912 
5226 
5222 
5224 
Length without caudal mm. . 
310 
290 
290 
325 
220 
Dorsal rays (fully developed) 
10 
10 
10 
10 
1 1 
Anal rays 
12 
1 1 
1 1 
12 
1 2 
Scales 
8-84-7 
8-85-7 
8-75-7 
8-82-7 
8-82-8 
Scales between occiput and dorsal fin 
34 
38 
35 
38 
36 
Branchiostegals 
9 
9 
9 
9 
9 
Gillrakers 
16 +3 1 
16 +31 
14 +29 
14+29 
16 +31 
1. 8 
1.8 
Comparative measurements: a 
Head 
0. 21 
0. 22 
0. 22 
0. 22 
O. 23 
Depth 
. 24 
■ 24 
. 21 
. 21 
. 22 
Caudal peduncle, length from anal to first caudal 
rays 
. 10 
. 1 1 
. 1 2 
• 125 
. 1 1 
Caudal peduncle, depth 
• 07 
.07 
• 075 
• 07 
. 07 
Eye 
■ 045 
. 04 
• 045 
. 04 
• 055 
Snout 
• 05 
• 055 
• 055 
• 055 
. 06 
Interorbital space 
. 065 
. 06 
. 06s 
. 06 
. 065 
Maxillary length from tip of snout 
• 07s 
• 075 
• 075 
• 075 
. 07 
Snout to occiput 
■ 14 
• 15 
• 15 
• 15 
. 16 
Ventrals to pectorals 
• 35 
• 35 
• 34 
. 28 
•33 
Pectorals in pectoral-ventral distance 
2. 50 
2 . 33 
2. 20 
2. 00 
2 . 20 
Pectoral length 
■ 14 
• 14 
• 15 
• 15 
• 15 
Ventral length 
. 14 
• 14 
• 14 
. 14 
• 14 
Dorsal height 
. 125 
• 13 
• 14 
• 135 
• 14 
Adipose length. 
. 065 
. 06 
. 06 
. 06 
. 065 
Anal height 
. 08 
• 09 
• 095 
• 095 
. 08 
a Measurements in hundredths of body length unless otherwise specified. 
Leucichthys ontariensis Jordan & Evermann, new species. 
Coregonus clupeiformis, De Kay, New York Fauna, Fishes, p. 248, pi. 60, fig. 198. 1842, Lake Ontario; not of 
Mitchill. 
Habitat: Lake Ontario and Cayuga Lake, New York. 
The ordinary lake herring of Lake Ontario is allied to Leucichthys artedi, but is more elongate, the 
caudal peduncle more slender, the pectoral not reaching nearly halfway to ventrals and the color 
much darker, the back, as in leucichthys sisco huronius, being lustrous blue. In all these regards the 
form stands intermediate between L. sisco and L. artedi, though doubtless nearer the former, toward 
which it seems to vary. The adipose fin, as in huronius and artedi, is large. From huronius it differs 
in being more compressed and stouter in every part. 
The specimens before us, five in number, were taken by Dr. Seth E. Meek at Deseronto, Ontario, 
the Bay of Quinte. The type is no. 64673, U. S. National Museum (collector’s number 29-2). This 
description is based on the type and four other specimens from Deseronto. 
Head 4.5 in body without caudal; depth about 4 (3.75 to 4.25); length of caudal peduncle from 
last rays of anal to first of caudal 2.5 in head, depth 2.66; eye 4.75 in head; snout 4; interorbital space 
3.75; maxillary, measured from tip of snout, 3; width of opercle 3.66 in head, subopercle 6.75; dorsal 
10; anal 11 ; scales 9-76-8, between occiput and dorsal 35 ; branchiostegals 9 ; gillrakers 14+27. 
Body elongate, more so than in Leucichthys artedi; dorsal and ventral outlines similar, convex; 
body compressed, width 2.12 in depth; depth varying in other specimens to 4 in body length, in which 
case the width is 1.75 to 2 in depth; caudal peduncle not greatly compressed, longer than deep; head 
