300 LEPIDOPTERA OF NORTH AMERICA. 



long, scarcely ciliated in the males. Palpi slender, slightly curved, 

 but little exceeding the clypeus, slightly hairy at the base; the basal 

 joint twice larger than the middle ; terminal joint minute, ovate. 

 Tongue as long as the thorax beneath. 



Body slender. Patagia nearly obsolete. Legs rather long and 

 slender; fore tibia3 unarmed; hind tibiae with four spurs, the 

 middle pair short. 



Eggs globular, pale yellow; producing larvae one week after 

 deposition. The larva on escaping from the egg is geometriform, 

 with ten legs. This refers to the species described below which 

 differs sufficiently in structure from the European N. mundana, it 

 appears to me, to authorize the separation of our species from the 

 group containing the European species. It may belong to the 

 Geometrina. 



1. N. mendica Walker, 576. 



Pale yellowish. Fore wings with the costa at the base fre- 

 quently touched with ochreous, with two irregular oblique blackish, 

 sometimes pale gray, bands, composed of large spots ; one on the 

 middle of the disk, and the other crossing the nervules, and a 

 single spot of the same hue near the hind margin in the medio- 

 central interspace, sometimes connected with the posterior band. 



Pennsylvania, New York. 



WALKER. 



LERINA WALKER. 



Male. Body short, thick, very hairy. Palpi thick, very short, 

 hairy; third joint very small. Tongue very short. Antennas 

 rather deeply pectinated. Abdomen extending as far as the hind 

 wings. Legs moderately stout ; hind tibiae with two rather long 

 middle spurs and two minute apical spurs. Wings narrow, rather 

 long. Fore wings straight in front, slightly rounded and not 

 angular behind ; first and second inferior veins almost contiguous 

 at the base; third about six times nearer to the second than to 

 to the fourth. 



