genera Acrolophus and Anaphora. 147 



outer third of the fold. The wings vary considerably in colour in 

 different specimens, the dark shading being much reduced in some 

 and increased in others. Hind wings fuscous, with a decided 

 purple tinge in good specimens ; the fringes cinereous. Abdomen 

 greyish fuscous ; the lateral claspers somewhat spoon-shaped and 

 inverted, but of approximately even width throughout, except at 

 the extreme base; the uncus is double, the points slightly diverging 

 and wide apart ; in three out of four males under observation 

 these points are completely bent under from the base, reaching 

 nearly to the narrow stem of the lateral claspers ; two small 

 supplementary processes reach to the base of the uncal points ; the 

 opposing point beneath the uncus is short and double. Exp. al. 

 27 mm. 



Five males collected at Goya, Corrientes, Argentine 

 Republic, by Mr. L. K. Perrens. 



Ackolophus, Poey, Cent. Lep. Cuba (1832). 



Type. Acrolophus vitellus, Poey. 



Poey thus describes this genus : — 



" Lingua nulla, antennae simplices; palpi longissimi, 

 recurvi, post tergum rejecti ; articuli omnes usque ad 

 apicem barbati ; fimbria anali longa. 



Genre Acrolophc, Poey. 



" Point de langue distincte, antennes simples, palpes 

 tres longs, couches sur le dos, avec tous les articles 

 barbus jusqu'a' l'extremite; frange longue vers Tangle 

 de l'anus." 



Tabulation of Species of Acrolophus, Poey. 



A. Uncus single = simulatm, Wlsm. 



B. Uncus double. 



a. With supplementary lateral processes =plumifrontellus, Clem. 



b. Without supplementary lateral processes. 



i. Points of the uncus laterally compressed = argentinus, Wlsm. 

 ii. Points of the uncus not laterally compressed. 



1. Lateral claspers spoon-shaped, widened in the middle 



= arizonellus, Wlsm. 



2. Lateral claspers slender, scarcely dilated. 



aa. The points of the uncus acute texanellus, Cham. 

 be. The points of the uncus obtuse = mortipennella .', Grote. 

 Not included in the above tabulation (see p. 140): — hamiferellus, 

 Hiib. ; cervinus, Wlsm. ; vitellus, Poey ; pallida*, Moschl. 



TRANS. ENT. SOC. LOND. 1887. — PART II. (JUNE.) M 



