HYODONTIDA. 65 
49. NOTEMIGONUS CHRYSOLEUCUS, (Mitehill) Jordan. 
In the Annals of the Lyceum of Natural History of New York for the 
present year, I have described as new a species of the genus Notemigo- 
nus from the Ocmulgee River, Georgia, under the name of Notemigonus 
ischanus, the description being drawn from a large number of young 
specimens. 
I have lately had the opportunity of examining a number of fine adult 
individuals of this species from the same river. Prof. Cope has also 
obtained specimens from the St. John’s River in Florida. 
This species differs from the common Notemigonus ‘‘ americanus” of the 
North and West chiefly in the following respects: (a) in the much greater 
size of the anal fin, the number of rays ranging from I, 15, to I, 17; 
(b) in the greater compression of the body, which at the same time is 
also more elongate; (c) in the larger eye; (d) in the rather more pointed 
head; and (e) in the coloration, the sides of the body in adult males be- 
ing more or less rosy, and the lower fins, especially the ventrals, orange, 
verging on blood-red at their tips. 
Linneeus’s original description of his Cyprinus americanus is as follows 
(Systema Naturv, ed. x, 1758, p. 321): 
Americanus 4. C.pinnaaniradiis . . . , cirris plurimis. 
Catesb. car. 2. p. 12. t. 12. 
Alburnus americanus. 
Habitat in America. 
In the twelfth edition, 1766, p. 530, the following is substituted : 
Americanus 23. C. pinna ani radiis xviii. B.3. D.9. P.16. V.9. A. 18. ©. 27. 
Habitat in Carolina. D. Gardeu. 
’ Corpus rutili, ceruleo-argenteum. Linea lateralis admodum arcuata versus abdo- 
men. Cauda bifida. 
From this latter description, it is evident that the fish which Linneus 
had in mind was the southern Notemigonus ischanus, rather than the 
northern so-called americanus, which, by the way, is not certainly known 
to occur in Carolina. 
Wherefore the southern species, Notemigonus ischanus Jordan, should 
be known as Notemigonus. americanus, and the species of the Northern 
States, Great Lake Region, and Mississippi Valley as Notemigonus chry- 
soleucus, the name of Cyprinus chrysoleucus Mitchill being the oldest 
tenable name applied to it so far as known to the writer. 
Leuciscus boscitt Cuv. & Val. is probably identical with Notemigonus 
Bull. N. M. No. 10—5 
