Mr. A. G. Butler on the Subfamily Pericopiinas. 163 



XXII. — Revision of the Subfamily Pericopiinas of the Lepi- 

 dopterous Family Arctiidas, with Descriptions of new Species. 

 By Arthue Gardiner Butler, F.L.S., F.Z.S., &c. 



In the year 1872 I published a list of Pericopiince in the 

 ' Transactions ' of the London Entomological Society ; but 

 owing to the confusion in which Mr. Walker had left the 

 genera, and to the slight acquaintance which I then had with 

 the allied subfamilies, I admitted into my paper several forms 

 which are more properly to be referred to other groups, whilst 

 at the same time I excluded a few which should have been 

 admitted. 



The above-mentioned list was compiled under pressure, as 

 an appendix to a paper describing new species ; I therefore 

 did not attempt to arrange the genera or species in any thing 

 like a natural series, nor did I examine into the value of the 

 genera or species which I quoted. The whole of these failings, 

 however, will now be corrected. 



Notwithstanding the constancy with which Mr. Kirby 

 persists (in each volume of the ' Zoological Record ') in re- 

 ferring the Pericopiinai to the Lithosiidae, I still assert that 

 they are unquestionably Arctiidaa, and that their true position 

 is (as I have always said) near to Hypercompa. What appears 

 to me to be their most natural place is after Anaxita (a genus 

 of the Halesidota group) and before Hypercompa ; they thus 

 form a connecting link between the Zygasnoid Arctiida? and 

 the Arctiidse proper. 



The genus Stenele, which I formerly included in this group, 

 is clearly more nearly allied to Chrysauge. 



All the Pericopiinai are from the New World. 



Genus Pericopis, Hiibner. 

 Subgenus 1. Thebrone, Boisduval. 



The author of this (uncharacterized) group states that its 

 types are the sacrifica of Hiibner and the Aglaura of Cramer ; 

 the first of these will, however, find its true position in Daritis 

 of Walker, which will leave as type P. Aglaura, thus restrict- 

 ing the typical group of Pericopis to P. Zerbina of Stoll and 

 P. eurocilia of Cramer. Dr. Boisduval, not being aware that 

 the sexes of the P.-Aglaura group are quite dissimilar, has 

 suggested for u tricolora of Cramer (turbida, Hiibner)"* the 

 subgeneric appellation ofAphisaon. The new species described 



* In this he has followed an error in Hiibner's ' Verzeichniss :' the two 

 species, though nearly allied, are distinct ; the males especially differ in 

 colour. 



