INTKODUCTIOK xi 



to the genus Lioptilus, Wallengren, and is re- 

 described and figured in this pamphlet. 



The third, Pterophorus cervinidactylus, to judge 

 from Mr. Packard's description, may probably be 

 found to be identical with the somewhat variable 

 and widely distributed Platyptilus bertrami, a Texan 

 variety of which has been described by Prof. Zeller 

 (Stett. ent. Zeit. 1867, p. 333) under the name of 

 P. bischoffii. 



Mr. Walker (Cat. Lep. Het. xxx. p. 940) described 

 Pterophorus homodactylus from Vancouver's Island ; 

 and Prof. Zeller (Verh. z.-b. Ges. Wien, xxiv. pp. 444, 

 445) records (Edematophorus cretidactylus, Fitch, 

 and describes Lioptihis mattlmvianus, both also 

 from Vancouver's Island. 



With these exceptions I am not aware of any 

 Pterophoridse having been alluded to by entomo- 

 logical authors as occurring in North-west America. 



In this pamphlet I have described several new 

 species, giving figures of each ; and have given 



