206 JOHN B, SMITH. 



greenish suffusion, but this seems rare. Prof. Riley's figure is a good 

 representation of the more conmion form. 



Despite the abundance of the larva the moth is not common in 

 collections. The genitalia are distinctive. The supra-anal plate is 

 much compressed laterally forming a long, curved, pointed hook ; 

 the inferior process is short, broader than the superior, and upcurved. 

 It is really not unlike that of uiididosa, but the superior hook is 

 longer and more compressed laterally. The side piece is very much 

 like that of undulosa in shape, but the clasper is a broad, somewhat 

 ladle-shaped process, with the oblique outer margin irregularly den- 

 tate. 



The larva has been described by Koebele, Boisduval and Riley, 



the latter giving the complete unique life history illustrated by good 



figures. 



ELIiElVIA Clem. 



Journ. Ac. N. Sci. iv. 1859, 187. 



Head small, retracted, the vestiture forming a somewhat indistinct 

 tuft between the antennte ; palpi short and slender ; tongue mem- 

 branous, about equal in length to the palpi ; practically obsolete. 

 Eyes of medium size and scarcely lashed. Antennae slender, fusi- 

 form, rather largest beyond the middle, ending in a somewhat bent 

 ciliated seta, simp»le in the females, biciliate in the males. Thorax 

 very short and stout, rounded in front, and scarcely advanced in front 

 of the base of primaries ; the vestiture thin, but close. Abdomen 

 cylindrical and tapering, untufted ; the hinder edges of the segments 

 spinulose. Fore and middle tibia spinulose ; middle and hind tibiiB 

 with the usual spurs short ; legs subequal, not strong. Primaries 

 eleven veined, moderate, with an even obliquely rounded outer mar- 

 gin. Secondaries with the usual venation, outer margin entii'e, some- 

 what excavated between veins lb and 2. 



The species are rare, and I have been able to dissect harrisii only. 

 In this the supra-anal plate of the % is very like that of the genus 

 Dara])sa, the side piece is moderate, with the tip oblique. The clas- 

 per is broad and corneous, and can be compared to nothing better 

 than a gouge chisel. 



There are four American species described ; all of them are pine 

 feeders, and except harrisii they are all very rare ; even harrisii is 

 not often obtained unless bred from the larva. The species are 

 closely allied, of a cinereous color, more or less shot with umber 

 brown ; the maculation, except in harrisii, indefinite. 



