2 THE LEPIDOPTEEA OF CEYLON. 



purplish-brown outer band, and a slender blackisli lunnlar marginal line. Body 

 purplish-white ; head, front of thorax, and tip of abdomen suffused with purplish- 

 brown ; front legs brown, with pale bands. 

 Expanse If inch. 



RISOBA OBSTRUCTA (Plate 144, Fig. 2, 2a, 2b, ^ $ , larva). 

 Bisoba obstructa, Moore, Proc. Zool. Soc. 1881, p. 328; Desc. Lep. Coll. Atk. p. 91. 

 Bolina obstriicfa, Walker, MS. Brit. Mus. Cabiuet. 



Male and female : forewing greyish-brown, indistinctly black speckled ; a white 

 basal oblique slender band, which is slightly brownish hindward and has a black 

 sinuous border: a discal greyish-white fascia bordered externally by an irregular 

 black line ; a black dot within the cell, and a circle enclosing another dot at its 

 end ; exterior border traversed by a broad blackish whitish-bordered indistinct band 

 terminating at the apex in blacker streaks ; a marginal row of black lunules bordered 

 inwardly with white : hindwing pale cinereous-brown, with pale brown marginal band. 



Expanse, S 1, q 1^ inch. 



Larva purplish-brown, palest laterally ; twelfth segment with a dorsal conical 

 prominence; with dorsal and lateral white-dotted lines, and a sublateral row of 

 whitish streaks ; between the lateral and sublateral lines is a row of black dots. 

 Pupa pale purphsh-red ; in a pale purplish-white narrow cocoon. 



" Feeds on QuisquaHs." (Dr. Thwaites.) 



Family BRYOPHILIDiE. 



Imago of small size ; body slender, crested above. Larva smooth, the ordinary 

 spots warty and shining; feeds on lichens, on walls, &c., concealing itself during the 

 day in little nests it forms in the chinks of the walls. {Stainton.) 



Genus BRYOPHILA. 



Bryophila, Treit.scbke, Schmett. Eur. i. p. 57 (1825); Guenee, Noct. i. p. 22; Walker; Lederer. 



Mctachrostis (part), Hiibner, Verz. bek. Schmett. p. 204 (1818-25). 



Pmcilia * (part), Sohrank, Fauna Boica, ii. 2, p. 157 (1802) ; Hiibner, id. p. 204. 



Male. Forewing elongated, costa nearly straight, exterior margin shghtly 

 oblique and convex; cell narrow, long, extending two-thirds the wing; first sub- 

 costal emitted at one-half before end of the cell, second trifid, fifth from end of 

 the coll, ascending and touching third mid-way between its base and the fourth ; 

 discocellular slightly bent close to upper end and near lower end, radials from the 

 angles; three medians, middle branch from angle close to end of the cell, lower 



* Previously used for a genus of Fishes. 



