APHODODERID^. 51 



considerably protractile, small, oblique, the maxillary scarcely reaching 

 pupil. 



Fin-rays : — Dorsal Y, 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 Gichlidce ; soft fins faintly barred ; cheeks and under parts of 

 head profusely speckled with fine black dots, as in Aphododerus cook- 

 ianus. 



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 Eed Kiver, Arkansas ; collector, Henry S. Eeynolds ; 

 two specimens. Eio Brazos, Texas, a single specimen noticed in a bottle 

 of Suufishes 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 

 Cichlidce 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^. 



35. ASTEENOTEBMIA, Nelson, MSS., mm. gen. nov. 

 Sternolremia, Nelson, Ball. Ills. Mas. 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 "sterwow", as in ApJiododerus, 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. 



