66 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 47. 



Family ACROLOPHID^. 

 Genus ACROLOPHUS Poey. 

 Type.—Acrolo'phus vitellus Poey. 



ACROLOPHUS PANAMA, new species. 



Male. — Labial palpi reacliing vertex; first joint long and curved; 

 second and tliird joints short, erect; first and second joints thickened 

 with appressed scales, slightly projecting at apex, light ochreous gray 

 on their inner side and at apex, dark brown exteriorly; terminal joint 

 flattened, tolerably pointed, blackish brown with extreme tip light 

 ochreous. Face and head light ochreous brown mixed with gray and 

 white scaleso Thorax ochreous brown. Forewing light ochreous 

 brown mixed with white, dark brown, and black scales; pattern very 

 poorly defined, but a broad, oblique, dark brown streak may be made 

 out from the middle of the fold to costa just before apex, adjoining 

 the base of which is a large, blackish brown spot on the lower edge of 

 the cell; a series of well defined, blackish brown costal spots and some 

 diffused marginal brown spots on terminal edge. Ilindwings dark 

 brownish fuscous. Abdomen dark brown with light ochreous under- 

 side and anal tuft. Uncus and lateral claspers slender, curved down- 

 ward and inward at tip. Legs oclireous on their inner side, dark 

 brown exteriorly; tarsal joints blackish brown with narrow ochreous 

 annulation. On the underside of the thorax just under the forewing 

 is a large, dense tuft of ochreous gray hairs, which can be erected so as 

 to obscure the sides of the head and the base of the fore wings. 



Alar expanse. — 10-12 mm. 



The females which were repeatedly taken in copulation with the 

 males are considerably larger and with more pointed wings and rather 

 lighter in general color. The labial palpi are hardly as long as in the 

 males and more porrected. They have no thoracic tufts. 



Alar expense. — 17-21 mm. 



Habitat. — Alhajuela, Cabima, Trinidad River, Tabernilla, Paraiso, 

 and Corozal, Panama, April, May and June. 



Type-specimen.— Qiit. No. 16771, U.S.N.M. 



In a series of more than sixty males, hardly two are quite alike and 

 the different state of preservation adds much to the variation, but the 

 general habitus, as well as the structural characters, makes it easy to 

 place the species, which appears to be close to A. ridicula Meyrick, 

 described from a unique male from Dutch Guiana. 



ACROLOPHUS BIFURCATA, new species. 



Labial palpi dark grayish brown, very long, slender, overarching 

 the head but held rather erect ; each joint thickened with scales toward 

 the tip; in the third joint these apical scales form a small free brush, 



