177 



Parramatta placidella sp. nov. (PI. XXIV, Fig. 17). 



$ antennae untufted, ciliate; palpi long, porrect, blackish laterally, mixed 

 dorsally with white scales; thorax largely whitish with faint ochreous tint; 

 primaries whitish, lightly sprinkled with black atoms ; a faint black dash at 

 base below which is an orange ochreous patch on inner margin extending 

 nearly to t. a. line and continued beyond the t. a. line as a broad band which 

 at times extends across the entire median space but is generally confined to 

 the immediate vicinity of the t. a. line; this line white, rounded outwardly, 

 not distinct at costa where it merges into the ground color, followed by a 

 distinct triangular black spot in the cell which does not touch costa but is at 

 times connected with it by a fine black line bordering the t. a. line; this cellular 

 black patch rests on the ochreous shade already mentioned ; preceding the t. a. 

 line on inner margin is a slight intensification of the black sprinkling forming 

 a darker shade but no distinct spot ; discal spots black, superimposed but the 

 upper one generally obsolete ; t. p. line white, bordered inwardly with black 

 and followed outwardly by slight black shading, arising from center of an 

 oblique black patch on costa, bulged outwardly opposite the discal spot and 

 with small inward angle in the fold ; an incomplete terminal dotted line ; fringes 

 pale inwardly, smoky outwardly. Secondaries whitish, in 2 tinged with 

 smoky. Beneath primaries smoky with whitish apical patch preceded by a 

 dark streak; secondaries as above. Expanse 19 mm. 



H.\BITAT: Olancha, Inyo Co., Calif. (June). 1 5,4 9. Types, Coll. 

 Barnes. 



The species is much paler than ardifcrella, especially in the median 

 area; we have several specimens from Stockton, Utah, one of which 

 has been labelled "ardifcrella" by Dr. Dyar. 



