230 ZYG^NID^ AND BOMBYCID^ 



PLATYCERURA FTJRCILLA. (PI. 9, fig. 15, ? ). 



Platycerura furcilla, Packard, Proc. Ent. Soc. Phil. vol. 3, p. .374. 



(1864.) 

 " <3 . — Ashen white, dusted with fine dark scales. The primaries 

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

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

 crosses the wing just before its middle, and from its branches at nearly- 

 right angles a line which becomes straight above the 2nd median nerv- 

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

 which is concolorous with the rest of the wing. There is a submar. 

 ginal obscure line shaded with white externally, which is irregularly 

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

 towards the margin of the wing. 



" Secondaries whitish, especially on the outer border, with a broad 

 obscure dusky submarginal line. The abdominal segments are annu- 

 lated above with white, paler beneath. The fore wings are beneath 

 dusky, the transverse dark lines appear through, the submarginal line 

 being especially conspicuous, beyond which the margin is much paler. 

 The secondaries are crossed by two obsolete bands, near the middle of 

 which the inner one is more distinct upon the costa, corresponding to 

 an inner costal spot. 



Expanse of wings, 1.50 inches ; length of body, 0.65 inch. 



Habitat. — Massachusetts, (coll. Harris, Mr. Sanborn). 



Packard, (loc. cit.) ' 



The figure is copied from a beautiful drawing by Hochstein kindly 

 loaned me by A. Grote, Esq. 



I have also two Californian specimens which appear to differ only 

 in the want of union of the two principal bands below the median 

 vein. 



