520 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lu 



almost completely fused with its mesoventral process (fig. 203) ; apical 

 portion of aedeagus weakly dentate or serrate dextrad (figs. 204, 205), not 

 spinose 44. serratus, new species 



54. Cucullus of harpe with dorsal margin prominently emarginate and dentate 



near base (fig. 211); aedeagus with apical quarter to third heavily armed 

 with series of variously sized spines (figs. 212, 213). 



46. variabilis (Walsingham) 



Cucullus of harpe with dorsal margin smooth (fig. 214) or very faintly serrate 



near base (fig. 217) ; aedeagus armed only at extreme apex with one or two 



spines (figs. 215, 216, 218) . 55 



55. Eyes sparsely setose; forewings brownish, not suffused with grayish white; 



aedeagus greatly elongated (fig. 216), with apical portion extruded in dried 

 specimens; vesica of aedeagus armed at or near apex with large cornutus 



(fig. 215); Arizona 47. macrophallus, new species 



Eyes naked or nearly so; forewings heavily suffused with grayish white; 

 aedeagus not greatly elongated (fig. 218), usually not extruded in dried 

 specimens; vesica of aedeagus armed at apex with 2 or 3 small cornuti 

 (fig. 218); western Texas 48. vauriei, new species 



Checklist 



The following annotated list represents my final disposition of the 

 names referable to the members of the genus Acrolophus occurring in 

 America north of Mexico. The sequence of species and lesser categor- 

 ies is essentially the same as that found in the key, since the latter 

 furnishes the best available illustration of the natural relationships 

 within this group. 



1. dorsimaculus (Dyar). 



2. griseus (Walsingham). 



a. griseus griseus (Walsingham), new combination. 



griseus leucallactis Meyrick, new synonym. 



b. griseus capitatus, new subspecies. 



3. texanellus (Chambers). 



hulstellus Beutenmiiller, new synonym. 

 barnesi (Dyar), new synonym. 



4. acornus, new species. 



5. simulatus Walsingham. 



6. exaphristus Meyrick, incertae sedis, no specimen available. 



7. bicornutus, new species. 



8. filicicornis (Walsingham). 



mexicanellus (?) Beutenmiiller (Mexican). 



9. plumifrontellus (Clemens). 



bombycinus (Zeller). 

 cervinus (?) Walsingham. 

 angustipennellus Beutenmiiller. 

 10. mortipennellus (Grote). 



quadripunctellus (Dyar) . 

 carphologus Meyrick, new synonym. 



zeellus, validation of manuscript name through placement 

 as a new synonym. 



