214 LEPIDOPTERA OF NORTH AMERICA. 



stout; hind tibiae with four long spurs. "Wings long, moderately 

 broad. Fore wings very slightly convex in front, hardly acumi- 

 nated, entire, slightly convex and very oblique along the exterior 

 border. Hind wings hardly acuminated. 



1. D. undulosa Walker, p. 231. 



Cinereous, hoary beneath. Thorax with a black testaceous- 

 bordered band in front and another behind, where there is also a 

 white band; a black stripe on each side. Abdomen with slight 

 testaceous bands, with a brown stripe in the middle, and with brown 

 spots along each side. Wings with white brown spotted cilise. 

 Fore wings with slender undulating blackish bands, three toward 

 the base and four beyond the middle, where there is a white black- 

 ish-bordered discal spot ; a blackish apical streak. Hind wings 

 with three brown bands. 



Length of the body 13 lines, of the wings 36 lines. 



Orillia, West Canada. 



CLEMENS. 



CENOSANDA WALKER. 



Male. Size small. Body moderately stout, subfusiform. Head 

 slightly crested. Proboscis moderately long. Palpi a little longer 

 and more slender than in the other genera ; third joint minute, 

 conical, apparent. Antennae setaceous, very minutely serrate, much 

 longer than the thorax. Abdomen less than twice the length of 

 the thorax, slightly tufted at the tip. Legs rather slender ; hind 

 tibiae with four moderately long spurs. Wings rather short, mode- 

 rately broad. Fore wings rounded at the tips, moderately oblique 

 and slightly convex along the exterior border ; first, second, and 

 third inferior veins somewhat approximate ; fourth remote. 



1. OS. noctuiformis Walker, p. 232. 



Hoary, whitish beneath. Head with a brownish crest. Thorax 

 with a brownish stripe along each side. Abdomen with a black 

 dot on each segment. Fore wings with several slender undulating 

 or angular, dark brown bands, and with a transverse more distinct 



