10 WILLIAM G. DIETZ, M. D. 



which eventually may prove these to be distinct, but which for the 

 present I prefer to consider as varietal only ; they differ from the 

 typical form as follows : general color a paler gray ; the spot at one 

 third of the fold less conspicuous and particularly by the narrower 

 and more pointed forewings. Another specimen in my collection 

 from Mountain View, California, I also refer to the variety under 

 consideration, it is of a grayish fuscous color with some lustre ; all 

 the wing markings obscure, except the spot at end of cell and four 

 or five costal spots. 



SECTION III. 

 But three species belong here : they are aberrant in general 

 appearance and markings of forewings and may readily be distin- 

 guished as follows : 



Forewings with four fascias obliquella. 



Forewings without fascias. 



Dark fuscous, without conspicuous costal spots Dyarella. 



Ground color grayish-white ; four large costal spots margoriella. 



4. obliquella n. sp. — Brush of first and second joints of labial palpi dense 

 and long, dark fuscous externally and sprinkled with dark brown scales, third 

 joint flattened, a little longer than the second joint, fuscous in basal half exter- 

 nally ; the first two joints with a few long, blackish lateral setee. Head sordid 

 white, scales loosely oppressed. Thorax sordid white, speckled with small 

 brown dots, patagia and four spots on the anterior margin dark brown. Fore- 

 wings moderately wide, elongate elliptic, apex broadly rounded ; ground color 

 sordid ochreous white, sprinkled with brown scales and marked with deep seal- 

 brown as follows: costa at base, from which extends a narrow oblique streak, 

 which reaches the dorsal margin where it expands into a triangular spot, a fascia 

 at one-third, moderately wide, extends obliquely until it reaches the fold, thence 

 perpendicularly to aud attaining the internal margin, another fascia at two- 

 thirds extends obliquely backwai - ds and forms a quadrate spot which extends 

 back a little but does not reach the dorsal margin, this quadrate spot encloses 

 another almost blackish spot on the transverse vein ; just before the apex is a 

 transverse spot extending half across the wing and somewhat bifurcate on the 

 margin, between this spot and the preceding fascia are one or two smaller costal 

 dots. Cilia sordid white, costal part barred with dark brown, the dorsal portion 

 with two irregular dividing lines and spotted with dark brown. Hindwings and 

 cilia fuscous brown. Underside of wings fuscous. Abdomen above, underside 

 of body and legs grayish, with more or less fuscous dusting; apical half of tarsal 

 joints paler. 



Exp. 13.0-16.5 mm.; 0.52-0.66 inch. 



Sab. — California (Pasadena); two specimens in my collection. 

 (Los Angeles), specimen in U. S. Nat. Museum. 



A very distinct species, unlike any other known to me. 



