New Geometridae and Dioptidae in Joicey Collection 255 



of the family, a very narrow white lower edge to the face, not noticed 

 in the original description. 



Leucaniodes gen. nov. 



Face rounded, somewhat prominent, with appressed scales. Tongue 

 wanting. Antenna in ? rather short, bipectinate almost to apex. 

 Pectus moderately hairy. Femora nearly glabrous. Hind tibia with 

 all spurs. Tarsi not spinulose. Thorax and abdomen not crested. 

 Frenulum (in $ ?) in ? wanting, the hind wing with basal expansion. 



Fore wing narrow, costa very gently curved near base, then almost 

 straight; apex almost rectangular, termen vertical to E 3 , strongly 

 oblique posteriorly ; cell over one-half, DC 3 slightly incurved anteriorly, 

 then strongly oblique ; C well free, SC 1 ' 2 long-stalked, SC 2 approaching 

 but not touching SC 3-4 , stalk of SC 35 from well before end of cell, 

 position of E 2 not extreme, M' remote from E 3 . Hind wing long and 

 narrow, apex pronounced, termen straightish anteriorly, becoming 

 gently curved posteriorly, tornus rounded ; cell almost one-half, DC 3 

 oblique ; C anastomosing with SC to near end of cell, SC 2 stalked, E 2 

 from slightly before middle of DC, M 1 remote from E 3 . 



Type of the genus : Leucaniodes periconia, sp. nov. 



A very distinct genus. Only two Hemitheine genera hitherto 

 known {Alloeopage and Cacochloris) have SC 2 arising from SC 1 — pro- 

 bably by obsolescence of its base. Alloeopage belongs to my Group iv, 

 with well-developed frenulum ; from Cacochloris the new genus — even 

 if the $ frenulum prove wanting — differs totally in palpus, in shape, 

 in anastomosis of C with SC on hind wing, and other characters. I 

 suspect it may have originated from the Ompliax group. 



7. Leucaniodes periconia sp. nov. 



2 , 34 mm. 



Head and body concolorous with wings. 



Fore wing whitish, cleanest on the veins and a longitudinal streak 

 in front of M from base to end of cell, otherwise tinged with smoky 

 brown ; a brighter brown shade behind M from base to origin of M 2 ; 

 no definite markings, but the wing nearly covered with fine longitudinal 

 lines of grey-brown irroration, giving the effect of alternate ridges and 

 furrows, much as in many of the Leucania group, Chilo and other 

 species which rest on dry grass or reeds ; terminal line suggested, but 

 not distinct; fringe concolorous. Hind wing white. 



