407 



Female. — Differs from Anisopteryx in the partly-developed wings, the 

 anterior pair being nearly as long as the head is broad. 



Larra.^- "Caterpillars with the first rings thick, having the trapezoidal 

 areas raised into small piliferous pyramids on the intermediate rings and on 

 the 11th; head tlat and quadrangular; living on trees. Chrysalids subter- 

 ranean." — Guene'e. 



This genus differs from Anisopteryx in the well-pectinated antennae and 

 different venation ; the markings being much the same in the two genera. 



Phigalia strigataria Packard. Plate 11, fig. 3, $ ; plate 13, fig. 37, 9 . 



diiwplei'yxf strigataria Minot, Proc. Boat. Soc. Nat. Hist., xiii. 84, 1869. 

 Hibernia olivacearia Morrison, Proc. Bust. Soc. Nat. Hist., xvi, 200, 1874. 



9 i . — A much smaller, less pilose species than the European /'. pilaria, 

 with the pectinations of the antenna' much shorter. Pale ash with blackish- 

 brown specks and lines Head while on the vertex, brown on the front. 

 Thorax whitish with a black collar, not extending, however, to the base of the 

 wings. Two rows of black spots along the abdomen. Fore wings pale ash, 

 speckled with dark brown; three blackish lines, the two inner parallel, the 

 outer one diverging and parallel to the outer edi. r e, often obsolete, indicated 

 by distinct squarish, costal, black spots and venular marks. Inner line a 

 little curved, the middle one straight ; outer sinuate. A diffuse, faint, broad 

 marginal shade edited with whitish. A row of intervenular black spots on 

 the edge of each wing. Hind wings whitish, finely dusted with dark scales, 

 with three lines, the middle the most distinct, and the inner and outer usually 

 present only on the inner edge. Beneath paler, smoky-ash, with the middle 

 lines faintly shown. Costa of fore wings thickly speckled: lour indistinct, 

 discal dots also seen beneath. 



Length of body, 0.45-65; fore wing, 0.65-0.85; expanse of wings, 

 1.35-1.60 inches. 



It varies greatly in size and in distinctness of the lines, some small indi- 

 viduals with partly obsolete lines closely resembling A vernata, and in the 

 distinctness of the bands on the hind wings; also in the distance between 

 the two outer lines on the hind edge of the fore wings, in some the two 

 touching each other on the edge of the wing. It differs from Anisopteryx 

 vernata, with which, when small, it may be easily confounded by the broadly- 

 pectinated antennae, by the black collar, by the much shorter hind wings, the 

 tip of the abdomen reaching to the inner angle. 



