52 ZYG^NID^ AND BOMBYCID^ 



BOMBYCIDJE. 

 LITH0SIIN5;. 

 Genus ETJPHANESSA. Packard. 



" The head is much elevated behind the antennae, the epicranium 

 divided on its surface into two bosses. Clypeus much elevated, surface 

 convex. The front narrows rather rapidly anteriorly. Antennae sim- 

 ple, scaled above and on the sides, setose beneath. Palpi porrect, 

 passing nearly one-half their length beyond the front. Primaries 

 two-thirds as broad as long ; costa rounded towards the apex. Outer 

 margin oblique, almost as long as the inner margin. Internal angle 

 rounded. Costal nervure bent down towards the subcostal, parallel 

 at its termination with the three subcostal nervules. A 

 scalene triangular area below the subcostal, one of the two 

 shorter sides of which consists of the common i-ase cf the 

 fourth and fifth subcostal; the other, by the anastomosis of 

 the fourth subcostal with its main nervure. The first median becomes 

 independent, arising from the middle of the discoidal area. 



' ' Secondaries nearly as large as the primaries, very broad. Outer 

 margin full, rounded , internal angle about midway in the wing, the 

 internal edge being short. Scales minute, thin, wings semi-transpar- 

 ent in spots. 



" This genus differs from Nudaria, with which it has been confounded 

 by Walker and subsequent writers, in the smooth finely-scaled nar- 

 rower front, while the antennce are not tufted at the base as in the Eu- 

 ropean genus. Besides the palpi are much longer, and project far 

 beyond the front ; the triangular fore wings are much broader and they 

 have straighter costas than in Nudarta. In the last named genus 

 also, the inner edge is nearly hvice as long as the outer, while in Eu- 

 phanessa it is considerably shorter than the outer edge. The seconda- 

 ries in our genus reach much farther beyond the tip of the abdomen. 

 There are, moreover, constant dilTerences in the neuration of the two 



genera. " 



Packard, Proc. Ent. Soc, Phil., vol. 3, p. 102. (1864.) 



