in the Basin of the Amazons. 233 



Before describing the next species it will be convenient 

 to draw attention to an oversight of Walker's. In the 

 Cat. Lep. Het. B. M., xv., p. 1640, he instituted the 

 genus Chadaca for the single species atrosignata, repre- 

 sented by a 2 from Venezuela. In vol. xxxiii., p. 1003, 

 he erects a new genus Ehosologia for a species porrecta, 

 represented by a 3' from Mexico. This last is evidently 

 the <? of C. atrosignatd, and is slightly larger than the 

 ? . As Walker's description of the genus was taken 

 from a ? only I append a fuller one. 



Chadaca, Walker. 

 Fore wing broad ; costa straight ; ai^ex slightly produced and 

 acute ; hind margin bulging out above the anal angle, and faintly 

 incurved below the apex ; hind wing rounded. Abdomen of ? 

 short and bhuit, not reaching beyond the hind wings ; of ^ longer, 

 with more or less pronounced anal tuft. Palpi with the second 

 joint ascending, convex above; thii-d half as long as the second, 

 rostriform, porrect, pale above and externally dark ; forehead with 

 a projecting tuft, pale, which, when the palpi are erect and con- 

 tiguous, forms one surface with the terminal joint; tongue ill- 

 developed. Antennae with a longer lateral bristle on each segment, 

 and slightly pubescent beneath in the J , densely pubescent in the 

 ^ , Fore legs, like the outside of the palpi, always dark. J rather 

 smaller than ^ . 



On p. 1641, loc. cit., Walker remarks that " this genus 

 has not much of the characters of the Tliermcsiidce, and 

 more of those of the PoaphilidcB, and may help to con- 

 nect the two families." Its jjroper place, however, would 

 rather seem to be before Rivula, from which I doubt 

 whether it can be satisfactorily separated. Like it, 

 Eivula has the frontal tuft concolorous with the terminal 

 joint of the palpi ; the outside of the latter and the fore 

 legs dark ; the ? smaller than the <? , and the neuration 

 identical. It differs apparently only in size and colora- 

 tion. 



Other species which should, I think, be referred, if not 

 to the genus Ilivida itself, at all events to its neigh- 

 bourhood, are Ecregma damcetesalis, Wlk., xvi., 252 

 {=Gli/)iipis eraconalis, Wlk., xix., 852), from Villa Nova ; 

 Hyamia palintatalis, Wlk., from Ega; Alinzia incon- 

 spicua, Butler, from Natal ; Kgnasia argillacca, Butler, 

 from Japan; and Egnasiafallax, Butler, from Japan. 



