198 ENTOMOLOGICAL NEWS [J^^V^ '^9 



this Species are very similar to those of C titania. Bush-beat- 

 ing by day or night is productive for all stages, as they rest 

 near their feeding places. The black tubercles, the thorn-hke 

 elevation on the dorsal surface and the whitish mid-dorsal line 

 are all factors in beautifully blending the larva with the color 

 of its surroundings. 



Catocala obscura var. obvia n. var. 



Primaries : Ground color glaucous finely sprinkled with various 

 shades of brown ; all lines are prominently dark brown ; t. a. line is 

 single-lined anteriorly with light gray. Basal dash is not quite as 

 dark as the t. a. and t. p. lines. This dash runs from the base to the 

 middle of the t. a. line, and from there to the lower part of the sub- 

 reniform, which is made up of two separate parts, the lower being a 

 part of the t. p. line, while the upper part is oval in shape and smaller 

 in size. Both parts are concolorous with the lining of the t. p. line. 

 The t. p. line is prominent throughout its length, and is lined posteri- 

 orly with light gray; the subterminal space is clear light brown; the 

 terminal line is light gray fused with brownish gray, the color of the 

 terminal space; All veins in the space marked with deep brown. The 

 round reniform is concolorous with the subterminal space, ringed and 

 centered with gray. 



The lower surface and secondaries above are same as in type. Wing 

 expanse 70 mm. 



Habitat. — St. Louis County, Missouri. Type, i S ; para- 

 types, I ^ , I 9 ; collection of author. 



These variants are larger in size than C. obscura, and I had 

 at first taken them to be the variety simidatilis A. R. Grote, but 

 since in the check list of Barnes and McDunnough simitlatilis 

 is a synonym of obscura, I have felt obliged to give this variety 

 the above name. 



A new Genus of Cerambycidae from Wyoming (CoL). 



By Clarence E. Mickel, University of Nebraska, Lincoln, 



Nebraska. 

 MEGACHEUMA n. gen. 

 Body subparallel, elongate. Last joint of palpi subtriangu- 

 lar, truncate at the tip. Labrum free. Base of antennae partly 

 enveloped by the eyes. Eyes finely granulated. Antennae sub- 

 serrate, joints three to six produced above at the apex into 



