182 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
L. 3^ iuclies. Alabama Basin ; abundant in clear streams, with the 
preceding and the next. 
{Codoma trichroistia Jordan A Gilbert, Bull.U. S. Nat. Mus. xii, 1378, 50.) 
11. Adult males without red. 
7 ft. A very conspicuous black s^iot at base of caudal. 
C. stig'Jliafura. .Iordan. — Spotted-tail Minnoiv. 
Body elongate, fusiform, compressed. Head quite long, rounded 
above, the snout itointed. Mouth rather large, somewhat oblique, over- 
lapped by the narrow uitper jaw. Eye small, 4^ in head; iris white. 
Maxillary reaching beyond nostrils; premaxillaiy on the level of lower 
edge of puiiil. Scales large, closely imbricated, 20 in front of the dor- 
sal. Fins low, the dorsal rather behind ventrals, its height less than 
one-fifth the length of the body. Color pale, clear olive; black dorsal 
spot not very distinct ; fins with their tips charged with satin- white 
l»igment, otherwise plain; a very distinct, large, oblong or quadrate jet- 
black spot at base of caudal, the color extending uji on the rays. This 
spot is visible on all specimens, and is larger than in any other of our 
Cyprinidce ; its length about one-third that of the head. First ray of 
dorsal dark in front; males with an obsolete black spot on the middle 
of the sides in front of the dorsal, as is often seen in CharacinklWj the 
head, etc., tuberculate in spring. Head 4^; depth 4f. D. S; A. 8; 
scales 7-42-3; teeth 1, 4-4, 1. L. 4 J inches. Alabama and Mississippi; 
very abundant. The largest species of this section of the genus and 
one of the most graceful. 
(Phofogenis stigmaturus JotAhu, Auu. Lye. Nat. Hist. N. Y. 1876, 3.17 : Codoma stigma- 
tura Jordan, Bull. U. S. Nat. Mus. xii, 52 : Liixilus chicanacensin Hay, Proc. U. S. Nat. Mus. 
1830,506.) 
mm. No conspicuous black spot at base of caudal. 
254. C. caes’iilea Jordan. 
Body fusiform, somewhat elongate, moderately compressed. Head 
moderate. Snout rather pointed, overlaiiping the small, oblique mouth, 
maxillaries reaching nostrils, premaxillaries below level of puj)il. Eye 
moderate, 3J in head. Scales firm, lo in front of dorsal. Lrteral line 
decurved. Fins all high, the height of the dorsal nearly one-fifth the 
length of the fish; dorsal behind ventrals. Males with the snout 
thickly tuberculate. Color bright steel-blue; the sides and belly sil- 
very white ; a very distinct lateral band of a bright blue-green color, 
most distinct posteriorly, and forming a spot at the base of the caudal 
fin; dorsal blotch rather faint and diffuse; tips of dorsal, anal, and 
