188 NOVITATES ZOOLOGICAE XXIII. 1916. 



of the forewing. la all the species of the group the $ antenna is minutely ciliated, 

 with a single longer bristle on each side of each joint. I am not sure that 

 Anisoperas is anything more than a section of Tetragonodes Guen. with non- 

 pectinate antenna. My Anisoperas pectinata {Ann. Mag. Nat. Hist. (8) vi. 521) 

 should at any rate be referred to Tetragonodes and is quite near the type of that 

 genus — anopsaria Guen. 



77. Digonis pristopera nom. nov. 



Microclysia philippii Bartl.-Calv., An. Univ. Chile, Ixxxiv. 828 (1893) ; Tr. Ent. Soc. Lond. 1893, 

 p. 220. 



This species is certainly congeneric with the one which Bartlett-Calvert himself 

 described two or three years earlier (Nuev. Lep. Chile, p. 10, f. 1, ? 1890 ; Ent. Mo. 

 Mag. xxvii. 314, 1891) as Digonis philippii (phillippii in An. Univ. Chile, Ixxxiv. 

 818, t. 1, f. 1). They are only distinguished structurally by slight differences of 

 shape. A new name is therefore necessary for the later one, and a fresh protest 

 should be registered against the mischievous practice of duplicating specific names 

 in closely allied genera. 



78. Microgonia dulcisona sp. nov. 



S , 42 mm. Head and body concolorous with wings. Face and vertex with a 

 tinge of purplish. Palpus reddish-ochreous. 



Wings glossy, delicate flesh-colour, in certain lights with the faintest possible 

 -suggestion of more brownish transverse striation ; a few scattered ochreons and still 



fewer blackish -fuscous scales. Forewing with costal edge narrowly ochreous ; 



discal dot minute, of mixed ochreous and blackish scales ; lines obsolete, a vague 

 purplish-grey spot at two-thirds hindmargin indicating the position of the end of 

 the postmedian ; distal area almost inappreciably darkened, towards termen and 

 -especially at tornus mixed with slight purple-grey shading ; fringe reddish-ochreous 

 except at tips. — Hindwing with proximal half slightly paler and more yellowish ; 

 costal edge pale ; no discal dot ; a very vague purple-grey shade or band from 

 R 1 just beyond cell to abdominal margin at three-fifths, corresponding to the 

 hind-marginal spot of forewing ; distal area without the purplish-grey shades of 

 forewing; fringe as on forewing. 



Forewing beneath coloured nearly as above, but with a more definite grey 

 distal border ; hindwing paler, with a conspicuous discal dot (larger than that of 

 forewing). 



Chili : Principal, February 1888 (V. Izquierdo). Type in coll. L. B. Prout. 



Very different, in colour and absence of lines, from quietaria Feld. (Reise 

 Novara, Lep. Het. t. cxxiii. 19) = flavaria Butl. (IV. Ent. Soc. Lond. 1882, p. 342), 

 nee Blanch., to which it is probably related. In both, SC 1 and SC 2 arise from the 

 cell, the former anastomosing with C and with the latter ; in quietaria SC 2 also 

 anastomoses slightly with SO 3-4 , but not in dulcisona. In some examples of 

 quietaria — as is liable to occur in the group and becomes normal in the most 

 typical section of Microgonia — the base of SC 2 is obsolete, leaving this vein 

 apparently long-stalked with SC 1 . Butler's misidentifi cation of flavaria Blanch, 

 (type of the genus Ennada Blanch.), with its pectinate antenna, is unaccountable, 

 unless he judged by the inexact figure and ignored the text ; Ennada certainly 

 supplants Anisogonia Warr., and carnea Butl. (Tr. Ent. Soc. Lond. 1882, p. 353) 

 probably sinks to flavaria. 



