264 BULLETIN 44, UNITED STATES NATIONAL MUSEUM. 



responsible for Mr. Grote's synonym, by insisting, correctly enough, 

 that Mr. Morrison's type in the Tepper collection had unarmed fore 

 tibi.T as described. Many specimens examined since, prove that this 

 was a defect in the type and not characteristic of the species. 



P. expallidus Grt.* 



1882. Grt., Papilio, u, 185, Plagiomimicus. 



HABITAT. Montana; Colorado, Platte Canon in August. 

 Types are in the National Museum and in the Neuincegen collection. 



P. viridifera Grt. 



1882. Grt., Can. Ent., xiv, 217, Zollieca. 



1891. Smith, List Lepidoptera, 53, Plagiomimicus. 



HABITAT. Arizona. 



The type is in Mr. Neumoegen's collection. The species has a curi- 

 ous color resemblance to the species of Zotheca; but in head and feet 

 structures the reference here is justified. 



Genus PALA Grt. 

 1875. Grt. Proc. Ac. Nat. Sci. Phil., 1875, 425. 



F. ptycophora Grt.* 



1875. Grt., Proc. Ac. Nat. Sci. Phil., 1875, 426, Fala. 



1882. Grt., 111. Essay, 64, pi. 3, f. 36, Fala. 



1883. Grt., Can. Ent., xv, 74, Fala. 



HABITAT. C al i forma. 



The type is in the British Museum. It is a curious mottled species, 

 with heavy body and primaries, in which the costa is depressed and 

 the apices are distinct. A specimen in the National Museum had 

 long puzzled me as to its location, as I could not make it function sat- 

 isfactorily with Mr. Grote's descriptions. 



Genus ACOPA Harv. 

 1874. Harv., Bull. Buff. Soc. Nat. Sci., n, 279. 



A. carina Harv.* 



1874. Harv., Bull. Buff. Soc. Nat. Sci., n, 279, Acopa. 

 1878. Grt., Can. Ent., x, 67, Acopa. 

 1883. Grt., Can. Ent., xv, 77, Acopa. 



HABITAT. Texas, in October. 

 The type is in the British Museum. 



A. perpallida Grt. 

 1878. Grt., Can. Ent., x, 68, Acopa. 



HABITAT. Kan sas. 



The type is in the British Museum. 



A. incana Hy. Ed\v. 

 1882. Hy. Edw., Papilio, n, 128, Acopn. 



HABITAT. Arizona. 



The type is in Mr. Neuinoegen's collection. 



