374 [November 



straight, curved down more than usual at the obtuse apex ; outer edge 

 .short and not so full as usual; inner angle much more rectangular than 

 usual, while the inner edore of the wins is very nearlv straight. thouo:h 

 not much loniier than the outer edo^e. 



The 1st subcostal is placed much within the middle of the wing. 

 There is an intercostal space. 2nd s. c. arises just within the origin of 

 the 3th s. c. The apical interspace is of the size of that in Cerura, 

 while it is, owing to the curved nervules enclosing it, semiovate and not 

 triangular as in Cerura. The 4th and 5th s. c. are short and straight. 

 The 1st median nervule instead of being an independent as in Cerura, 

 is curved downwards at base, and united Avith its main nervure. and 

 the 4th median is straight. 



Secondaries short and rounded, apex very obtuse. The}' reach to 

 the outer fourth of the abdomen. Thus it is much shorter and broader 

 than in Cerura. The apical interspace is long, much as usual. 



The abdomen tapers rapidly, contracting rapidly before the tip, which 

 is well tufted. Legs much as in Cerura. 



In color tJie single species known is light gray, crossed by a basal 

 dark straight line, and an outer dark line which widely forks upon the 

 median nervure so as to enclose a square space. 



The broad triangular fore wings, orbicular secondaries and large 

 broad closely cropped front, the short acute abdomen, and long pecti- 

 nated antennae distinguish this genus from Harpt/ia of Europe, which 

 it somewhat approaches. 



Platycerura furcilla b. sp. 



% . Ashen white, dusted with fine dark scales. The primaries are 

 crossed by a twice angulated basal black line, within which at the in- 

 sertion of the wing is a short basal spot. A. second straight line crosses 

 the wing just before its middle, and from it branches at nearly right 

 angles a line which becomes straight above the 2nd median nervule 

 and parallel to the inner line, thus enclosing a large square area which 

 is concolorous with the rest of the wing. There is a submarginal ob- 

 scure line shaded with white externally, which is irregularly zigzag, 

 and runs down more than usual in the 2nd median interspace towards 

 the margin of tne wing. 



Secondaries whitish, especially on the outer border, with a broad ob- 

 scure dusky submarginal line. The abdominal segments are annulated 



