238 PAPERS BY DR. B. CLEMENS. 



the tip. The apical spot is not distinct if present, the apex 

 being nearly denuded of cilia and scales. 



The single specimen before me is much mutilated and with- 

 out a head ; therefore I was obliged to rely exclusively on the 

 neuration of the wings to determine the genus to which it 

 belonged. Compared with other members of the genus the 

 venation of the wings varies slightly. In the fore-wings 

 there are four subcosto-marginal nervules, and the apical 

 nervule, which arises from the middle of the posterior end of 

 the cell, is furcate at its extremity. The median vein is 

 3-branched. In the hind-Avings the venation is the same as 

 in other members of the genus, except that the inosculation 

 of the bifid subcostal vein with the tip of the costal, and of 

 the lower branch of the former with the furcate discal nervule, 

 is almost obsolete and very indistinct. 



The insect appears to resemble Ornix guttea of Europe, 

 but cannot be identical, as the spots in Boreasella are nearly 

 round instead of triangular as in Guttea, and the former has 

 but two costal spots, while the latter has three. 



The specimen was collected in Labrador by Mr. A. S. 

 Packard, Jr., and was numbered 1621. 



Incurvaria.* 

 C^2Tf 3. Incurvaria Labrador ella, n. s. Fore-wings fuscous 

 with a brassy hue, with a white band at the basal third of the 

 wing and an opposite dorsal and costal spot of the same hue 

 at the apical third of the wing, and which nearly meet in the 

 middle of the wing. Cilia concolorous with fore-wings. 

 Hind-wings fuscous, somewhat iridescent. Head and an- 

 tenna? dark fuscous. 



In the fore-wings the apical vein is simple and enters the 

 costa behind the tip. In the hind-wings the median vein is 

 3-branched ; subcostal simple ; discal nervules two. In 

 ornamentation the insect bears strong resemblance to the 

 Elachistce. 



* See ante, p. 89. II. T. S. 



