( IS' ) 



a subgenus of Asota ( = Hyjjsa) which he calls Aaano'pis Butler. The genus AfjanojAs 

 is erected by Herrich-Schiiffer, Auss. SclimeU. pp. 12 and 70, for Peridrome orbi- 

 cularis Wlk., and has been described neither by its author nor by Mr. Butler. \\'hy 

 Snellen ga\e preference to this younger nomen niuluni, instead of accepting the 

 older name of Anai/niii Wlk., I cannot understand, the more as Walker's diagnosis 

 of Anagnia is not at all bad. 



Snellen says. I.e., that orbicularis Wlk. — Snellen writes orbicularia Moore — 

 and subfascia Wlk. are different from the species of Asota, (^ = H)/p.s(i) only in the 

 male ; we shall see that this is not the case. 



Hampson, I.e., treats Anagnia Wlk. and Peridrome ^\'lk. as sections of 

 Peridrome Wlk., and differentiates the two " sections " only by the secondary 

 characters of the males. We can neither agree with Snellen nor with Hampson, 

 though in one point both authors are perfectly right — namely, in objecting to base 

 genera on differences in secondary sexual characters. 



Peridrome and Anagnia may be characterised as follows : — 



Anagnia, c? ? : Second joint of palpi at least half as long again as the third. 

 Stridulating organ different from that of Asota Hb. ; fold before ea\'ity on forewing 

 short, narrow, and covered with an irregular row of (twelve to iifteenj large but rather 

 thin scales, here and there two or three scales of different size beside one another : on 

 upperside of hindwing there is in c? a patch of thick scales near the base clo.se to the 

 black portion of the strongly developed scent-organ ; in ¥ these thick scales are situate 

 in the middle of costal region between costal vein and centre of apex of cell. 



Neuration : Areole nearly as in Asot((,; vein 9 terminating in costal margin, 

 vein 7 in ape.x of wing, which is quite an exception amongst Aganaidae ; second 

 partition of median nervure of either wing much shorter than the respective portion 

 of the outer margin ; veins G and 7 of hindwing on a short stalk (in nine individuals 

 before me). 



Peridrome, t? ¥ : Second joint of palpi about one-fourth (or les.s) longer than the 

 third, slenderer and longer than in Asota. Cavity on forewing, as in Euplocia, 

 deeper than in Anagnia and Asota, and basally sharply limited ; fold before it as in 

 Anagnia ; corresponding patch of thick scales on hindwing standing in (S before 

 and in apex of cell, in ¥ much more restricted than in ¥ of Anagnia. 



Neuration: Vein 11 of forewing originating before middle of cell, areole much 

 longer than the cell is broad ; vein 8 terminating in apical angle of wing ; second 

 partition of median nervure of either wing about as long as the respective portion 

 of outer margin ; veins 6 and 7 of hindwing from a point, not stalked. 



As the neuration and the stridulating organ are of remarkable constancy 

 amongst the numerous species of Asota lib., the peculiar development of these 

 organs in Anagnia and Perid/roiiu proves certainly that the species of Asota are 

 much closer allied with one another than they are witli orbicularis and subfascia, 

 and that therefore these two insects cannot be included in Asota, as Snellen does. 

 Whetlier Anagnia and Peridrome must be ke))! separate as two genera — that is 

 another question. The chief differences between them are these: vein 11 stands 

 before middle of cell in Piridrome, far beyond middle of cell in Anagnia ; the basal 

 portion of the areole is at least twice as long in Peridrome as in Anagnia; the 

 second partition of the median vein of either wing is much shorter than the 

 respective partition of the outer margin in Anagnia, while in Peridrome the 

 partition is at least as long as the partition of the margin; vein 7 of forewing 



