APHODODERIDZ&. 51 
considerably protractile, small, oblique, the maxillary scarcely reaching 
pupil. 
Fin-rays:—Dorsal V, 7 (6 to 10; the exact number of soft rays I am 
unable to make out). Anal III, 6 (5 to 8); the spines of the dorsal con- 
tinuous with the soft rays. 
Color olive-green, finely punctulate everywhere; sides with about 
eleven parallel vertical bands of dark olive, about equal in width, nar- 
rower than the eye, the bands about as wide as the pale interspaces. 
A roundish black spot, nearly as large as the eye, under the beginning 
of the spinous dorsal, just above the axis of the body, as in many South 
American Cichlide ; soft fins faintly barred; cheeks and under parts of 
head profusely speckled with fine black dots, as in Aphododerus cook- 
danus. \ 
Length of each of the three specimens known just one inch. It 
probably grows to a somewhat larger size, but the fact that it has thus 
far apparently been overlooked by collectors, leads me to think that its 
maximum dimensions are quite small. 
Habitat.—Little Red River, Arkansas; collector, Henry 8S. Reynolds ; 
two specimens. Rio Brazos, Texas, a single specimen noticed in a bottle 
of Sunfishes in the United States National Museum, without other label 
than that of the locality. 
This species seems to bear little relation to any of the genera of 
Cichlide described from South America by Dr. Giinther or Professor 
Cope. I therefore propose to consider it as forming a distinct sub- 
family, and leave the matter of its relationships for future investigation. 
APHODODERID AS. 
35. ASTERNOTREMIA, Nelson, MSS., nom. gen. nov. 
Sternotremia, NELSON, Bull. Ills. Mus. Nat. Hist. 1876. 
Some objection has been made to the name Sternotremia on the 
ground that it is anatomically incorrect and misleading, the vent not 
being in the “sternon”, as in Aphododerus, but entirely behind it. As 
the name Sternotremia was given through a misunderstanding of the 
meaning of *‘sternon”, Mr. Nelson proposes to modify it to Asternotre- 
mia, which term is anatomically correct, and indicates the chief dis- 
tinction between this genus and Aphododerus. 
