43 



deeply notched near the middle, the posterior lobe much arched. 

 Insects of large size. 



Saussure xnutes the genus Spharagemov , Scudder, established 

 in 1875, with Dissosteira, and adopts the latter name because of 

 the gender of the former ! 



The species may be separated as follows : — 



J f Base of the wings black Carolina. 



I Base of the wings light yellow 2. 



q, f Apex of the v.ings with dusky spots at the tip . . marmorata. 



I Apex of the wings without dusky spots at the tip . . . 3. 

 g f Body i>ale, sparingly punctured bollii. 



I Body deeply punctured, and irrorate with black . cequalis. 



DissosTEiRA CAROLINA. Linneus. 



Pale yellowish brown, with small dusky spots ; wings black, 

 with a broad yellow hind margin, which is covered with dusky 

 spots at the tip. Length, from one to one and one-half inches. 



DiSSOSTEIRA ^QUALIS. Say. 



Ashy gray, mottled with dusky brown and white ; wing covers 

 senii-transparent at tip, with numerous dusky spots, so run together 

 as to form three tranverse bands ; basal half of wings light yellow, 

 transparent, with dusky veins and a few spots at the tip, and an 

 intermediate broad black band, which reaches the inner angle of 

 wing, curving and growing narrower on the hind margin ; hind 

 tibias coral red, spines tipped with black, and a wide white annul- 

 ation below the knees. Length, one and one-fourth inches. 



DiSSOSTEIRA isoi.Lii. Scuddcr. 



Brownish fuscous, the face with a grayish cinereous (in the male) 

 or yellowish cinereous (in the female) tinge, distinctly i)unctate. 

 the pits dui^ky or blackish ; antennae brownish yellow on the basal 

 half, infuscated beyond, the whole more or less annulate with 

 dusky yellow and blackish in the male. Wing covers flecked 

 throughout with minute blackish spots. Wings light greenish ^-el- 

 low at the base, with a broad median arcuate band, blackish in 

 color, sending out a broad short shoot toward the base next the 

 upper bordt'r. Heyond, the wing is at first hyaline, with broad 

 I)ln<kisli, fuliginous veins, while the extreme tip is black, as the 

 median band. Hind femora dull brownish ; the basal two-fifths of 

 the hind tibiic blackish, with a broad whitish annulus beyond, 

 coral red. Crest of pronotum very high, that of the posterior lobe 



