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, l - 8. Depth of the ventrals, 2"5. 

 Fin rays, D. 15 ; P. 15 ; V. 7 ; A. 29 ; C. 18 }. 



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 



Hyodon clodaus. 



PLATE LI. FIG. 1C4. —(STATE COLLECTION! 



Hiodon clodalus. Lesueuk, Joum. Acad. Nat. Soc. Vol. 1, p. 367. PI. 14. 

 H id., The Larger Herring. Kirtland, 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 stria;, which are distant in the centre, and crowded 

 on the sides ; exposed surface with diverging stria?. 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 



