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AMERICAN TEYBIDIEAE, UBANIIDAE, AND 

 GEOMETBIDAE IN THE TRING MUSEUM. 



By W. WARREN, M.A., F.E.S. 



Family THYRIDIDAE. 



1. Belonoptera cancellata spec. nov. 



Forewing : brownish ochreous ; a smoky brown-black subcostal streak from 

 base, widening outwards and running into the projecting apex ; the costal edge 

 whitish grey, with dark strigae and larger spots before apex ; from the subcostal 

 streak a series of vertical brown parallel and equidistant lines traverses the wing 

 to inner margin, nine in number, of which the fifth alone is curved inwards and 

 not so parallel as the rest; the intervals filled with irregular brown reticulation, 

 and with a finer crinkled brown line down the centre of each; space immediately 

 below subcostal streak at margin above vein 7 white; fringe dark brown. 



Hindwing : with five parallel brown lines in basal half, followed by a line 

 from three-fourths of costa, forking at vein 7 to anal angle and end of vein 3, witli 

 a middle line to end of vein 2, and an irregular crinkled line before apex; the 

 intervals with contorted reticulatious as in forewing ; fringe brown. 



Underside paler, towards base whitish, white along inner margin of forewing ; 

 markings as above. 



Head, thorax, and abdomen like wings; legs and palpi brown with whitish 

 joints. 



Expanse of wings : 56 mm. 



1 ? from La Oroya, R. Iuambari, S.E. Pern, 3100 ft., March 1904, wet season 

 (Ockenden). 



Allied tn B. frondicula and nervicula, Guen. 



Hepialopsis gen. nov. 



Forewing : thrice as long as wide ; costa straight, slightly convex towards 

 apex, which is bluntly rounded ; inner margin somewhat lobed near base ; outer 

 margin obliquely curved ; anal angle obtuse and ill-marked. 



Hindwing : much smaller, but of similar proportions ; inner margin quite 

 short, not more than one-fourth of the length of wing ; the underside with a 

 downwards-directed ridge of coarse scales running along costal vein from base 

 to apex. 



Abdomen (in ?) reaching far beyond hindwings ; antennae simple; forehead 

 rounded; palpi porrect, quite short: tongue and frenulum present; legs short 

 and stout. 



Neuration : forewing, cell longer than half of wing, broad at extremity ; 

 discocellular incurved from upper end to middle, then vertical ; all the veins 

 straight and simple ; vein 2 at five-sixths ; 3, 4, 5 close together round lower 

 end of cell; (j from the upper curve of discocellular ; 7,8,9 from round upper 

 angle; Id shortly before them; 11 from one-third, near base: hindwing, cell 

 short ; (i, 7 from upper angle ; the rest as in forewing. 



Type : Hepialopsis spAingipt znnis spec. nov. 



