117 



Maxillat't/ jyal})!, very short aud inconspicuous. 



Tongue, very long, clothed with scales only at the extreme base. 



Ocelli, absent. 



Head, smooth. 



Fore wings, elongate, sharply lanceolate, the costa slightly bulged before the middle ,* 



11 veins ; 3 and 4 from a common stem ; 7 and 8 from a common stem, the lower 



branch running to the apex, the upper To the costa. 

 Hind-icings, elongate-lanceolate, sharply pointed, the costa arched before the middle, 



the abdominal margin somewhat widened and depressed. 

 Abdomen, genital segments of ^ largely developed ; the uncus and lateral claspers 



tapering posteriorly ; the i)oiuts, slightly upturned, extending three-sevenths of 



the whole length of the abdomen ; the ovipositor of the 9 extruded. 



Arotrura eburnea, sp. n. 



Aniennce, ivory-white ; basal joint elongate, flattened at the base, and slightly 



arched. 

 Palpi, ivory-white ; clothed with appressed scales, which are somewhat dilated down- 

 wards on the basal joint only ; apical joint about two-thirds the length of the 

 second, somewhat less stout, but by no means slender. 

 Tongue, very long, clothed at the base with ivory-white scales ; beyond, naked, 



light yellowish-brown. 

 Head, face, and ilwrax, smooth ivory-white. 



Fore-wings, elongate, sharply lanceolate, ivory-white; cilia, ivory-white. 

 Hind-wings, pale grayish-fawn ; cilia pale fawn at their base, fading outwardly into 



fawn-white. 

 Under side of fore and hind wings, tinged with grayish-fuscous in the ^ , tending to 



pale fawn color in the 9' 

 Abdomen, ivory-white; somewhat ochreous beneath; ^ , uncus single, very long 

 wide at the base, but somewhat laterally compressed above, having a narrow 

 stalk immediately beyond the base, whence it is latt rally compressed, down- 

 wardly dilated, and ta})eiing posteriorly to a narrow and slightly upturned 

 gouge-shaped point ; lateral claspers rounded externally, with an angulated pro- 

 jection at about the middle of the upper edge, whence they taper posteriorly to 

 a narrow, slightly upturned obtuse point, reaching as far as the end of the uncus; 

 within these claspers, and projectingslightly beyond the angle atthe middle of the 

 upper edge, are two spatulate appendages, or supplementary claspers, fringed, 

 with hairs along their edges and about their surface. 9 with the ovipositor 

 strongly exserted, flattened at the base, aud fringed at the extremity with simi- 

 lar hairs to those found on the supi)lenientary claspers of the male. 

 Exp. al., 20»i"\ 

 Habitat, Arizona. 

 Types, ^ 9 , J/"s. JVlsm. 



Two males and one female received from the late H. K. Morrison. 

 Without a careful examination of the neuration and genital segments this species 

 would undoubtedly have been regarded as a Butalis, for although somewhat larger 

 than the ordinary forms of this genus ; it has almost exactly the shape of wings and 

 general appearance which distinguish it. The fore and hind wings are, however, 

 somewhat narrower towards the apex. 



{To be continued.) 



