152 



Sir George Hampson is in error, and Dr. Dyar is correct, in re- 

 gard to the frontal prominence. 



"Acopa" pacifica Hy. Edw. 



1884, Hy. Edw., Pap., IV, 46, Acopa. 



1893, Sm., Bull. U. S. N. M., XLIV, 265, Acopa. 



1909, Hamp. Cat. Lep. Phal. B. M., VIII, 410, ignot., fAcopa. 



The authors did not find the type in either the Brooklyn Institute 

 or the American Museum. Apparently Smith could not find the type 

 (1893); it is not Hsted by Dr. Ottolengui in Entomological News, 

 "Types in the Neumoegen Collection", and is unknown to Hampson 

 (1909). 



The original description is quite obviously not of any species 

 congeneric with the known species of Acopa, but agrees perfectly 

 with Oxycnemis advena Grote {=baboqiHvaria Smith). Tentatively, 

 the authors are placing pacifica as an unknown Oxycnemis, probably 

 synonymous with advena. 



The remaining species and forms assigned to Acopa; except 

 bistrigata B. & McD., which is not congeneric; may be separated into 

 two groups. The first group has the t. a. line outwardly oblique, no 

 matter how much or how little that line may be indented or produced 

 to points. This group includes only the single species, carina. 



The second group has the t. a. line very nearly erect, produced to 

 long points in the cell and at the claviform. This group contains the 

 names perpallida, incana, borealis, dentifer and piira. 



Acopa carina Harv. 



1875, Harv., Bull. Buff. Soc. N. S., II, 279, Acopa. 



1903, Holland, Moth Book, p. 163, (partim. nee plate), Acopa. 



1909, Hamp., Cat. Lep. Phal. B. M., VIII, 410, text fig. 107, (type $ \ 

 Acopa. 



Apparently Harvey and Hampson are correct in that this species 

 is sexually dimorphic. A series of two males and thirteen females 

 are in the Barnes Collection from various Texas localities only. The 

 males are much suffused with blackish-brown. The females are much 

 paler than the males, with paler secondaries, and at first glance appear 

 specifically distinct. No two specimens are absolutely identical, espe- 

 cially in the amount of brownish suffusion on the primaries. 



