240 MB. w, scnAUS on new heteroceba [Mar. 6, 



53. Chobia separata, sp. nov. 



Head deep yellow, with a transverse grey band ; collar yellow. 

 Thorax dark grey ; patagia yellow, inwardly shaded with grey. 

 Abdomen yellowish ; in the female a black dorsal spot on the 

 last segment denuded of scales. Primaries above silvery white ; 

 the inner margin broadly dark grey, anteriorly shaded with yellow; 

 the costal margin finely yellow. Secondaries yellowish white ; 

 the apex broadly smoky grey. Underneath, the secondaries are 

 the same ; the primaries are smoky grey, with two thirds of the 

 costal margin, a streak beyond the cell, and a streak above the 

 inner margin yellowish. Exp. 27 millim. 



Hab. Castro, Parana. 



Ohs. In the female the secondaries are entirely yellowish 

 white, and the primaries below are whitish with the inner and 

 outer margins smoky. 



54. Cbambomorpha mabcata, sp. nov. 



Head, collar, and thorax dark grey ; the collar laterally and 

 base of patagia yellowish. Abdomen whitish grey, shading to 

 yellow at the last segment. The primaries above silvery white ; 

 the costal margin chrome-yellow ; the inner margin broadly dark 

 grey, with a whitish streak at the base. Secondaries white, faintly 

 tinged with grey on the outer margin. Underneath white, the 

 primaries tinged with grey, and the chrome-yellow costal margin 

 very conspicuous. Exp. 34 millim. 



Hah. Eio Janeiro. 



Ohs. I have a female absolutely similar from Peru. 



55. Cbambomorpha tibginia, sp. nov. 



5 . Palpi luteous. Head dark grey. Collar and abdomen 

 fawn-colour. Thorax white. Wings pure white, the primaries 

 silvery ; secondaries thinly covered with scales. Exp. 31 millim. 



Hab. Castro, Parana. 



Obs. Allied to 0. argentea, Peld., but smaller and a more 

 delicate insect. The colour of the collar distinguishes the species 

 at once. 



56. Cbambidia cobcovada, sp. nov. 



Head and thorax grey. Abdomen dorsally grey, underneath 

 yellowish. Primaries above whitish, the inner margin greyish ; 

 secondaries yellowish white. Underneath, the primaries are 

 greyish, the basal half tinged with yellow ; the secondaries whitish, 

 the costal margin yellow. Exp. 21 millim. 



Hah. Eio Janeiro. 



57. Cbambidia petrola, sp. nov. 



(5 . Body grey ; anal segment of abdomen yellowish. Primaries 

 white ; the costal margin finely chrome-yellow ; the inner margin 



