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NEW YORK STATE MUSEUM 



from the central part by a narrow white line, lighter at the sides, 

 with yellowish or golden scales. Pleura thickly clothed with 

 white scales. The denuded thorax shows a median narrow brown 

 line bordered with a lighter almost plumbeous one on each side. 

 Abdomen brown, with a broad white band, somewhat expanded 

 laterally, at the base of the segments. Yellowish white scales are 

 scattered over the abdomen, while clusters almost form a median 

 stripe, which is more apparent in bred or unabraded specimens. 

 Ventral surface clothed with white scales. Legs, dark brown; 



Fig. 57 Comb of C. cinereoborealis 



femora yellowish, lighter beneath and almost black at apex. An- 

 terior and mid tibiae lighter beneath, posterior tibiae show dark 

 purple reflecftions in sunlight. Tarsi unicolorous, almost black; 

 ungues unidentate. Wings la'rge, thick, venation strongly 

 marked; petiole of the first submarginal cell almost as long as 

 cell ; posterior cross vein less than its own length from the nearly 

 equal mid cross vein. 



Male. Head, similar in color to that of female; the antennae 

 and palpi uniformly brown; thorax with brown spots more ex- 

 tended, more golden or yellowish scales, and with fewer white 

 scales laterally and on the pleura. Abdomen more slender than 

 in the female ; basal bands narrower, with very few scattered yel- 



