650 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



processes; lateral margins heavily sclerotized, sublinear, converging 

 distad to broadly and evenly rounded apex. 



Anellus large, membranous, unarmed, juxta absent. 



Aedeagus rather slender, length medium, approximately five-sixths 

 as long as harpe, glabrous, cylindrical, asymmetrical, linear in dorsal 

 and ventral aspects, sinuate in lateral aspect with basal portion 

 curving somewhat dorsad and apical portion curving somewhat 

 ventrad; approximate basal fourth slightly expanded, opening broadly 

 dorsad, very weakly emarginate ventrad; remainder of aedeagus 

 gradually and evenly narrowing distad; approximate apical three- 

 tenths opening broadly sinistrad and consisting simply of well sclero- 

 tized dextral strip produced near apex into small, heavily sclerotized, 

 acute, spinelike process directed dextrad. 



Vesica medium sized, membranous, unarmed. 



Type. — Type cf (type no. 5343) in the U.S. National Museum. 



Type locality. — Huachuca Mountains, Ariz. 



Distribution. — Southwestern United States. Arizona. 



Sources of material. — California Academy of Sciences (7 cTcf); 

 Carnegie Museum (2 d^ cf ) . 



Specimens examined. — 9 (all c^&), from 2 localities: 



Arizona: Huachuca Mountains, 2 cf cf (Carr Canyon, Aug. 5, 1924, J. O. 

 Martin), 5 cf cf (Carr Canyon, Aug. 7, 1924, E. P. Van Duzee); Palmerlee, 

 Cochise Co., cf (date and collector unknown); locality and date unknown, cT 

 ("Arizona," Engel collection). 



Remarks. — This species undoubtedly ranges southward into Mexico. 

 It is closely related to fervidus and the complex species, sinclairi, 

 forming with them a rather distinct species group. This group, con- 

 sisting of fairly large and robust moths, has been characterized in the 

 foregoing remarks on fervidus. A. persimplex may be distinguished 

 from its close relatives, as well as from the other members of the 

 genus, by its color pattern, the shape of its aedeagus, and by the 

 presence of a distinct clasper on the inner surface of the cucullus of 

 its harpe. The antennae of persimplex are quite similar to the peculiar 

 type exhibited by Jervidus, and they are perhaps best described as 

 representing a transitional form between reduced lamination and re- 

 duced unipectination. The genital structure of persimplex is con- 

 sistent throughout my specimens representing this species. 



I have examined the type cf specimen at the U.S. National Museum. 

 It is labeled "Neolophus persimplex Dyar, type no. 5343, Huachuca 

 Mts., Ariz., Aug. 8-15." Dr. Clarke removed the genitalia of the 

 type for me and the identity of this species was further confirmed. 

 In the antennae of the type specimen, each segmental process exhibits 

 the characteristic, minute, spinelike structure at its apex. My 

 examination of a slide preparation of cT genitalia labeled "Acrolophus 



