1880.] LORD WALSINGHAM ON NEW TINEID.E. 89 



PSECADIA SUBCiERXJLEA, Sp. DOV. (Plate XII. fig. 5.) 



Prcecedenti affinis ; alis anticis subcxruleo albis-, lineis et maciilis 

 irregularibusfumosisprcecipue supra trientem dorsalem conspersis; 

 margine dorsali peranguste fumoso. 



This species differs from the last named (Psecadia arctostaphy- 

 lella) in its slightly larger size, and in the absence of any generally 

 connected shade over the costal half of the fore wings. This is as 

 it were replaced by a series of disconnected smoky blackish streaks 

 of varying size and distinctness. The most noticeable of these are 

 an elongate shade from the base immediately below the costa ; a 

 short oblique dash below it also on the basal third of the wing. One 

 or two semiconnected parallel streaks along the cell about the middle 

 of the wing ; a spot, with three projecting limbs on its outer side, 

 lying between the lower angle of the cell and the anal angle, and a 

 very slender blackish line all along the dorsal margin. The veins 

 surrounding the cell are also more or less indicated by lines of 

 blackish scales. In some varieties, perhaps slightly worn, the mark- 

 ings are much less distinct than in others. 



It is nearly allied to P. arctostaphylella, and frequents the same 

 probable food-plant, so that a comparison of the larvae would be 

 interesting, in order to establish or to refute the distinctness of the 

 two species ; but it differs, as I have shown, in having no dis- 

 tinctly separate pale and dark portions on the fore wings ; and, 

 moreover, in the slender line along the dorsal margin, which does not 

 occur in that species. 



Expanse 25 millims. 



S 2 • Sonoma and Mendocino counties, California, May 23rd and 

 June 13th, 1871. 



Psecadia albistrigella, sp. nov. (Plate XII. fig. 6.) 



Capite et thorace subnigrescenti-brunneis, linea alba circumcinctis ; 



alis anticis subnigrescenti-brunneis, striga submedia angusta alba 



a basi ad finem cellules producta furcam brevem gerente, punctis 



novem marginalibus nigris, posticis paulo pallidioribus ; abdo- 



mine (postice) et tibiis posticis flavis. 



Head blackish brown, with a white line on each side above, which 



is carried round the blackish-brown thorax, forming an angle behind 



it, with the apex pointing forward. Palpi blackish brown, the apical 



joint upturned, long, and pointed, a small white spot at the junction 



of the second and third joints. Antennae more than half the length 



of the fore wings, blackish brown. Fore wings blackish brown, a 



narrow white steak of even width running from the base along the 



lower edge of the cell, and terminating in a short fork at its lower 



external angle ; the lower half of the fork is sometimes obsolete ; 



there is a row of nine black dots preceding the cilia, three on the 



costal and six on the apical margin. Hind wings and cilia very 



slightly paler than the fore wings. Abdomen bright orange-ochreous 



except at the base, which is blackish brown. Legs blackish, except 



the third pair, which are bright orange-ochreous, and have the ex- 



