172 GLYPHIPTERYGIB.'E. 



rather gregariously, there being generally twenty or more on one 

 plant. 



4. Betulella, Curt. B. E. fo. G79 (1S3S). 

 Taken by Mr, Dale on birch-trees at Castle Eden Dene, in Au- 

 gust; unicjue in his collection. 



Genus II. ROSLERSTAMMIA. H-T. (1 



Roslerstammia p., Zell. Isis, 1839. p. 202; Dup. Adida p., Treit. 



CapilU in occlpite et vertice Jdrsuti, caeterum decumbeutes. Ocelli null!. 

 AntenucC crass'msculce, filiformes, microscope pubescente-ciliatfe, cor- 

 poi'e lomjiores. liausteUum mediocre, nudum. Palpi labiales, fili- 

 formes, mcdiocres, penduli vel subporrecti, articulo tertio pra;cedentem 

 lougitudine et crassitie suba?quaiile, acuto. Ala3 oblonga3, posteriores 

 ovata?, ciUis mediocribus ; auteriores : vena apicalis farcata, infra 

 eam rami 5 inter se distantes ; cellula secundaria bene indicata ; sub- 

 mediana3 apex incrassatus ; vena subdorsaHs longe furcata ; poste- 

 riores : cellula costalis elougata ; vena apicalis simplex, infra cam 

 vense duaj simpliccs ; vena; discoidalis rami duo ultimi furcam for- 

 mant. 



The crovm and hack of tJie head rough, the remainder with decumbent 

 scales. Ocelli none. Antcnn;ic rather fhtch, filiform (viewed through 

 a lens, with pubescent ciliations). longer than the Jjodij. Tongue of mo- 

 derate lengtli, naked. Labial palpi filiform, of moderate length, droop- 

 ing or rather porrect ; the third joint nearly equal in length and thick- 

 ness to the second, pointed. Wings oblong, the posterior ovate, with 

 moderate cilia. In the anterior wings the apical vein is furcate, below 

 it are five veins at equal distances ; the secondary cell is well indicated ; 

 the apex of the submedian vein is thickened ; the subdorsal vein has a 

 long fork. In the posterior wings the costal cell is elongate ; the 

 apical vein is simple, below it are two simple veins ; the two last 

 branches of the discoidal vein form a fork. 



There is only one species in this genus, which has .some resem- 

 blance to an AilcJa. 



^ -^ 1. Erxlebella, Fab. Man. ii. 250. 27 {\l^l).—fi(sco-cuprella, 



vH - V ■ ILiw. ; Step. — chri/Hitella, Treit. — rf'wtW/c/, Dap. ? — Erxlebenidla, \Ae- 

 ma-*^ nig? Alis anticis nitide cupreis, dorsum versus dilutioribus. Exp. al. 

 ' 6i lin. 



Head dark yellow. Face and palpi pale yellow. Antenna; black, a 

 short space before the a]jex white. Anterior wings bright-coppery, to- 

 wards the inner margin ratlu^r paler ; cilia coppery-grey. Posterior 

 wings violet-fuscous, with j)alcr cilia. 



Appears in June, on heaths, but hitherto very scarce. (Ac- 



