40 ZYG^NID^ AND BOMBYCID^E 



ZYGEmDE. 



ZYGM^IDE. 



Genus LYCOMOKPHA, Harris. 



" The front of the head is provided with long scales extending to the 

 base of the maxilte. When the head is denuded, the clypeus is broadly 

 scutellate, the length being equal to the breadth, with the basal margin 

 produced backwards, and encroaching more on the epicranium than 

 usual. The front edge contracts suddenly into a square portion resting 

 above the mandibles and maxillae. The epicranium is small and short, 

 deeply impressed by a mesial line and divided thereby into two trian- 

 gular halves ; while the occiput is transversly oblong, being twice as 

 broad as long. 



" The antennae have short setiferous densely scaled pectinations ; in 

 the female they are serrated, the teeth terminating in single seta?. 

 Mandibles rather long and slender, projecting out beyond the scales 

 of the front. 



" The body of this genus is long and narrow, slender. The thorax 

 is narrow, and the pleurae of each thoracic segment are very oblique. 

 Pro-thoracic scales (being the two halves of the pro-scutum) ovate 

 elliptical. The meso-scutum is remarkably small, being shorter than 

 broad, and no longer than the scutellum, which is of much greater 

 length than usual. The form of this last piece is much different from 

 what we find in Cieniicha. In form it is pentagonal, the front edge be- 

 ing transverse, the two posterior sides forming a triangle, while the 

 two anterior sides are, though nearly parallel, yet slightly divergent. 



" Wings remarkably long and narrow ; primaries nearly three times 

 as long as broad, being remarkably long and narrow as in the Lithosiae. 

 Costa straight as far as the apex, which is much rounder than usual 

 as is also the internal angle, while the inner edge is but one-fourth 

 shorter than the costal. The nervules arise remark- 

 ably equidistant, and their origins are much shorter 

 'and nearer the outer edge than in the allies of the 

 genus. The short subcostal nervules run rapidly to 

 the costal edge. First, second and fifth of equal 



