92 MR. R. TRIMEN ON BUTTERFLpS [Jan. 20, 



than tibia and ending in a long slightly-curved acute claw, in female 

 as thick as tibia and like the other tarsi except that the first joint 

 is shorter. 



Abdomen of moderate length, slender, laterally compressed, 

 arched, acuminate. 



The structural characters italicized in the above diagnosis are 

 those that mainly distinguish this new genus from Zeritis ; but the whole 

 aspect, notwithstanding similarity of colouring and to a less extent 

 of marking, is very different from that of the latter genus, and 

 resembles that of the small Acrcece represented by A. serena, Fabr. 

 Though much more normal as a Lycsenid than such aberrant 

 African genera as Deloneura and Lachnocnema, EriTcssonia exhibits 

 considerable divergence from the typical groups of the family, and 

 is probably best placed between Zeritis and Mimacrcea, but nearer to 

 the former than to the latter. 



77. Erikssonia acr^ina, n. sp. (Plate TX. figs. 18 cj'? 19 2, 

 20 c?.) 



Exp. al. {S) 1 in- ^h'^z lin- ; (?) 1 in. 6 lin. 



(S . Varying from pale to deep fulvous-ochreons, tuitli narrow 

 fuscous marginal borders. Fore wing : a moderately broad costal 

 border, commencing before first third of wing, becoming gradually 

 wider to apex, but very deeply excavated by the ground-colour a 

 little before apex; a terminal narrow elongate transverse disco- 

 cellular fuscous mark joined to costal border (in one of the larger 

 examples almost obsolete) ; some of the underside markings, 

 consisting of two discocellular dark spots and a discal and a sub- 

 marginal series of dark spots, indistinctly traceable ; hind-marginal 

 border, below apical costal expansion, evenly narrow to posterior 

 angle, its inner edge emitting short nervular dentations ; cilia pale 

 ochre-yellow, with two or three rather indistinct dark nervular inter- 

 ruptions along upper half of wing. Hind wing: hind-marginal 

 border without internal dentations, narrower than in fore wing, 

 except at apex, where there is a considerable fuscous expansion much 

 like that in fore wing ; from the lower inner corner of this expansion 

 there runs (in the two paler smaller examples) a somewhat sinuated, 

 slightly tapering, outwardly denticulated, submarginal fuscous streak, 

 the extremity of which is curved to join that of hind-marginal border 

 at anal angle ; in one of the two large examples only the very 

 commencement of this streak is distinct, in the other the whole 

 streak is wanting and the apical dark marking is much reduced. 

 Cilia long, creamy, with regular narrow nervular fuscous interruptions. 

 Underside. — Paler and duller than upper side, varying (in accordance 

 loith tint of upperside') from pale dull ochre-yellow in the two 

 smaller examples to pale fulvous-ochreous in the two larger ones ; 

 in both wings — three discocellular blach spots (one terminal), an 

 irregular discal row of smaller black spots, a submarginal black 

 streaJc (submaeular in fore wing) bearing along its inner side a sub- 

 macular glittering-silvery streak, and a hind-marginal well-marked 

 black edging line, immediately 'preceded by a creamy one (the latter 



