252 



fore wiugs arc pale-ash, clear in the middle ui' the wing, with a speckled 

 costa and outer edge. Hind wings ash, mottled densely with hi'own scales; 

 discal dot distinct ; the wings darker on onter halt' be\'on(l the single distinct 

 luown line, with a dusky |)atch in the middle of the wings adjoining the line. 



In the female, there is only an obscure band on the fore wings. The 

 hind wings are more angulated and dentated than in T. marcescarla. 



Length of wing, O.HG ; body, <?, 0.45; expanse of wings, 1.25 inches. 



Sanzalito, Cal., January 16, April to May 20 (Behrens) ; California 

 (Edwards). 



Thamnonoma guenkauia, xp. nov. Plate 11, tig. 70. 



2 S . — Body resembles in form T. trlpuuctufin, but tiie palpi are much 

 shorler, though longer than in T. irdiinria or ^L-llmnria. Antenna" well pec- 

 tinated, though the branches are shorter than in T. fr'ipu net aria or A-/inearia. 

 'Vho, shape of the fore wings is intermediate between I\ A-lhieofia and frl- 

 jiuticfdrui^ ])eing slightly falcate, but scarcely excavated below the ajx'x, 

 nearly agreeing in this respect wilh T. A-lhicdrid. The hind wings are not 

 angled, but slightly scalloped. Antenna-, front, palpi, and fore legs ochreous. 

 Body and wings gray, w\i\\ a slight ochreous tinge. Three dark, equidistant, 

 costal spots, l)nt with n(j lines running from them. The only line is a sul)- 

 niarginal, distinct, ochreous, slightly sinuous line, edged slightly and irregu- 

 larly on both sides with dusky. A marginal row of dark dots. A small 

 discal (K)t on e;ich wing. Hind wings a lit fie paler than the anterior pair, 

 dusted, but wilh no lines. Beneath, bright ochreous, dusted transversely 

 with brown; both winus alike. A large, tlusky, square, median, costal spot; 

 sometimes four irregular costal patches. The line is faintly I'eproduced, but 

 there are no other markings. Legs as usual 



Length of body. </,().42; of tore wings, cf,(l.57; expanse of wings, 1.10 

 inches. 



North Calili)rnia (Crotch, :\Ius. Comp. Zor>l.). 



This species diifers from any of the olhers in its single, outer, slightly 

 sinuous, bright-ochreous line. On this accouni, it is liable to l)e confounded 

 with some species of I'liasidiii', such as /'. inordiid. 



Thamnonoma (.iUADRiLiNEAKiA Packard. 



llutUt ijmulilliiimria rack., I'roe. Bost. Soc. Nat. Hist..xvi, 'M, IST-I. 



2 i . — Closely resembling T. wavaria, U) which section of the genus it 



