Dec, I9I2.] Grossbeck: North American Geometkid.e. 



289 



Harvey's species. Since it differs from this however in the absence 

 of the large spots it may well be retained as a variety of it on this 

 character. 



Structurally, the two species differ in wing shape, those of sphcero- 



I. Catopyrrha coloraria. 



2. Catopyrrha spharomacharia. 



macharia being considerably more acute than in coloraria, and in the 

 length of the palpi, those of the former being decidedly longer and 

 more slender than those of the latter. 



In describing spccromacharia Harvey seems to have noticed the 

 decided difference between this species and coloraria but, apparently 

 in deference to Packard's view, describes it as a variety of 

 coloraria. 



My notes and specimens would indicate that coloraria is dis- 

 tributed from London, Canada, southward along the Atlantic sea- 

 board to and including Florida. Sphcero macharia seems not to 



