J..L' 



fore wings are pale-ash, clear in the middle of the wing, with a speckled 

 costa and outer edge. Hind wings ash, mottled densely with In-own scales; 

 discal dm distinct ; the wings darker on outer half beyond the single distinct 

 brown line, with a dusky patch in the middle of the wings adjoining the line. 



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

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



Length of wing, 0.56; body, <?, 0.45; expanse of wings, 1.25 inches. 



Sanzalito, Cal., January 10, April to May 20 (Behrens) ; California 

 (Edwards). 



Thamnonoma guenearia, sp. nov. Plate 9, fig. 70. 



2 S . — Body resembles in form T. tripunctaria, but the palpi are much 

 shorter, though longer than in T. wavaria or k-linearia. Antennas well pec- 

 tinated, though the branches are shorter than in T. tripunctaria or A-iincaria. 

 The shape of the lore wings is intermediate between T. A-linearia and tri- 

 punctaria, being slightly falcate, but scarcely excavated below the apex, 

 nearly agreeing in this respect with T. A-linearia. The hind wings are not 

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

 Body and wings gray, with a slight ochreous tinge. Three dark, equidistant, 

 costal spots, but with no lines running from them. The only line is a sub- 

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

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

 discal dot on each wing. Hind wings a little paler than the anterior pair, 

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

 with brown; both wings alike. A large, dusky, square, median, costal spot; 

 sometimes four irregular costal patches. The line is faintly reproduced, but 

 there are no other markings. Legs as usual 



Length of body, <S , 0.42 ; of fore wings, c?, 0.57 ; expanse of wings, 1.10 

 inches. 



North California (Crotch, Mus. Comp. Zool.). 



This species differs from any of the others in its single, outer, slightly 

 sinuous, bright-ochreous line. On this account, it is liable to lie confounded 

 with some species of Phasiane, such as ]'. irroraria. 



Thamnonoma quadrii.inearia Packard. 



Halin quadrUinearia Pack., Proc. Boat. Soc. Nut. llist..xvi, 20, 1874. 



2 S . — Closely resembling T. wavaria, to which section of the genus it 



