125 



or pruinose. Pronotum sometimes striped on the sides with brown, espe- 

 cially in the male, sometimes browii thmughout. Elytra sprinkled with 

 minute, brownish spots, chiefly along the middle and lower half; dorsal 

 margin somewhat pale, unspotted ; the dorsal angle tinged with reddish ; 

 semi-transparent at the apex. Wings a transparent-yellow at base ; a narrow, 

 curved, fuscous band across the middle, interrupted near tlie front margin, 

 where it bends in toward the base a short distance, but does not reach the 

 anal angle ; apical portion transparent. Posterior femora with two brown 

 bands on the upper half inside and outside, ringed with pale-yellow near the 

 apex ; tibi?e yellowish. 



Dimensions. — 5 Length," 1.25 inches; elytra, 1.15 inches; posterior 

 femora, 0.63 inch; posterior tibiae, 0.56 inch. 3 Length, 0.75 to 0.9 inch. 



Massachusetts (Harris, Scudder); Connecticut (Smith). 



<E. imdulata, Thos., Geol. Surv. Terr., 1871, 460. 



Middle foveola of the vertex somewhat elongate, elliptical, with a median 

 carina through it, and generally a depression at the front ; lateral foveolse very 

 shallow, small, trigonal; frontal costa expanding just above the ocellus and 

 at the base, sulcate in the middle portion. Pronotum contracted on the an- 

 terior lobes; posterior lobe flat on the disk, rapidly exjianding posteriorly, 

 punctured ; median carina a dim line, slightly raised on the front lobe, twice 

 severed ; apex right-angled. Elytra and wings passing the abdomen about 

 one-third their length. Wings papilioform,* very broad ; the exterior mar- 

 gin regulai'ly and beautifully undulated ; anterior sub-marginal space almost 

 as l)road as the elytra ; nervules prominent, regularly and remarkably parallel. 



Color (dried after short immersion in alcohol). — Ashy-brown. Head 

 and thorax sometimes mottled with darker-brown or fuscous. Elytra marked 

 with dusky spots, presenting a basal group and an irregular middle band, but 

 on the apical portion they are sporadic. Wings transparent-yellow on tlie 

 inner half, the outer half more or less dusky ; the inner margin of this dusky 

 portion generally forms an irregular, interrupted stripe, parallel with the body 

 when the wing is fully expanded, not bending in at the hind margin ; at other 

 times the dusky portion is indicated only by a transverse cloud, or by the dark 



* This term is used to distinguish the butterfly-form of the wiug from that with 

 regularly convex margins. In this form there is a slight re-eulering of the margin a 

 little behind the front ; this applies to the general contour, and not to the smaller 

 scallops. 



