new Neotropical Geometrician. 245 



termen, but slightly outcurved nearcosta; postmedian from 

 just before three-fourths costa, commencing with a dark 

 dash and consisting of a series of dark vein-dots parallel 

 with termen ; subterminal line whitish ashy, rather thick, 

 forming a double indentation below costa, another behind 

 cell, and a third (less distinctly double) between M 3 and 

 SM 2 . Hind wing similarly coloured, the cell-spot diffuse, 

 the lines obsolescent. Underside similarly marked, but 

 much more weakly, the markings (especially on fore wing) 

 being partly obliterated by an increased dark suffusion. 



Bartica, British Guiana (W. J. Kaye), type ; a second ? 

 from Para, May 1898 (/. Trumbull), in Coll. Brit. Mus. 



Very similar to E. yponomeutaria (Guen.) from the West 

 Indies, but readily distinguished as follows : — hind wing, at 

 least in ? ( <$ unknown), more acutely toothed at M 1 ; fore 

 wing with postmedian line much straighter (in yponomeu- 

 taria it is angled outwards on R 1 , and bends inwards beneath 

 the cell), subterminal somewhat more irregular, terminal line 

 more continuous (in yponomeutaria it consists of a series of 

 roundish dots between the veins), fringe rather more strongly 

 spotted. 



Acidalia atridiscata (Warr.), ab. obsoleta, nov. ab. 



$ . Differs from the type (Hamalea atridiscata, Warr. 

 Nov. Zool. xi. p. 37) in the entire obsolescence of the charac- 

 teristic black discal mark, the position of the discocellulars 

 being mei'ely indicated very faintly by an elongate light 

 brown mark. Termen of hind wing very slightly bent at 

 R 3 , which is not perceptible in any vinocinctata that I have 

 seen, nor in the figure of atridiscata which I have before me. 



San Antonio, W. Colombia, 5800 feet, November 1907 

 (M. G. Palmer) ; one <J . 



Mr. Warren is strongly inclined to regard atridiscata 

 (described from Peru) as a form of vinocinctata, Guen. The 

 alliance is certainly very close, but I think they should be 

 kept distinct. I have not been able to study much material, 

 but in any case the antenna of my ab. obsoleta is more 

 strongly dentate than in the Brazilian vinocinctata, the 

 fascicles of cilia apparently somewhat longer and stronger. 

 It is not unlikely that obsoleta may prove specifically distinct 

 from both the others, or at least a constant local race. 



I find in this species no structural differences from 

 Acidalia (= Craspedia, Hmpsn. = Emmiltis, Warr.), the 

 slightly more pointed fore wing certaiuly not being generic. 



