266 NEW-YORK FAUNA. 
with the tips reaching to within 0°4 of the base of the ventrals ; with two simple rays. - Ven- 
trals broad, with a pointed accessory scale. Anal fin long; its first five rays short, succes- 
sively longer; the two last rays longer than the preceding; the sixth ray longest, thence 
gradually decreasing to the seventeenth ; a few rays subsequent to this are subequal. 
Color. Back bluish; sides silvery. Fins tinged with yellow. Opercle silvery, with cu- 
preous reflections. Base of the caudal rays dusky. 
Length, 9°0; of the head, 1-8. Depth of the ventrals, 2°5. 
Fin rays, D. 15; P..15; V. 7; A293"C. 18 7. 
This species, which was first described by Lesueur from the Ohio, I observed in the Alle- 
gany river in this State. It is known under the popular names of Herring, River Herring, 
and Toothed Herring. Very indifferent food. 
THE LAKE MOON-EYE. 
Hyopon cLopanis. 
PLATE LI. FIG. 164. — (STATE COLLECTION.) 
Hiodon clodalus. Lesurur, Journ. Acad. Nat. Soc. Vol. 1, p. 367. Pl. 14. 
H. id., The Larger Herring. Kirtiuanp, Report Zool. Ohio, p. 195. 
Characteristics. Elongate, compressed. Dorsal with its margin sinuous. Back with a 
regular curve. Length 7 inches. 
Description. Dorsal outline forming a regular curve to the snout. Abdomen, between the 
ventrals and anal, trenchant. Scales rounded, moderately large. The radical margin pro- 
duced in the middle, with 12 - 14 radiating striz, which are distant in the centre, and crowded 
on the sides; exposed surface with diverging strie. Lateral line may be traced from the 
upper end of the branchial aperture, over the opercle, to the superior portion of the orbits, 
forming rather a prominent ridge. This line is rather irregular in its course, until a short dis- 
tance before the dorsal fin, when it is deflected, and becomes concurrent with the dorsal out- 
line. Head compressed, scaleless. Opercle with a notch behind. Eyes 0°4 in diameter. 
Nostrils double, near the end of the snout; the upper largest. Mouth large ; under jaw shut- 
ting within the upper. ‘Teeth in a single series on the upper jaw; in several below. The 
sides and tips of the tongue armed with long acute recurved teeth. 
The dorsal fin originates at a point equidistant between the tip of the snout and extremity 
of the tail: the first four, simple, short, and successively longer; the fifth, sixth and seventh, 
longest, thence gradually diminishing with a slight variation to the last, which is rather longer 
than the three preceding. Pectorals long and pointed, lying in a horizontal groove or cavity ; 
the first ray simple, the second longest. Ventral small, with an obtusely pointed accessory 
scale; its tips do not reach the vent. Anal fin with thirty rays. It arises under the fifth 
dorsal ray; the first four rays very short, and successively longer; the seventh and eighth 
