60 



Length of body, <?, 0.42 ; of" fore wings, <?, 0.60 ; expanse of wings, 1.20 

 inches. 



Sanzalito, Cal., April (J. Behrens). 



I take pleasure in dedicating this fine species to Mr. James Behrens, its 

 discoverer. It is one of the largest of the genus, and may be recognized by 

 its large size and the pointed wings, the outer edge of the wings being sinu- 

 ous; also by the absence of the usual markings. It is but little rubbed, and 

 so well marked that I venture to describe it. There is no species in the 

 Eastern States like it. 



EUPITHECIA RAVOCOSTALIATA, SJ). 11. Plate 8, fig. 9. 



1 9 . — This exceedingly pretty species is, in form and size, intermediate 

 between E. miserulata and subapicata. Like E. nevadata, the head is very 

 prominent, the wings very long and subacute, the outer edge of the fore wings 

 being very oblique. The palpi are very short and thick, broad: the third joint 

 very short, minute, and passing Init slightly beyond the front. Head and thorax 

 white; palpi and front edge of the head dark tan-brown. Wings whitish- 

 ash. Costa of fore wings dark russet-brown, almost tan-color, interrupted by 

 fine white spots, the widest one being beyond the discal dot, wliile the one 

 over the discal spot is very faint. Tlie discal spot is black and linear, oval. 

 The middle of the wing is whitish. There are faint traces of transverse lines, 

 more distinct on the inner submedian region of the wing, whicli is tinged 

 irregularly with russet-brown, with wavy, transverse lines. On the bases of 

 the median branches are fine tan-brown streaks and dots. A double, white, 

 extra-discal, wavy, somewhat interrupted line is bent outward below the costa, 

 and sends a pointed scallop inward on the second and third median venules, 

 and again on the internal vein ; beyond, a broad, interrupted, russet-brown 

 band, beyond which js a wav^-, distinct, submarginal, white line, beginning on 

 the costa midway between the apex and the extra-discal costal spot (the 

 beginning of the extra-discal line). Hind wings white on the costal half; 

 behind ash-colored, with tour fine, wavy, white lines, the fourth (and sub- 

 marginal) being distinct and sharply zigzng. Marginal white line interrupted 

 by white dots. Fringe on both wings long, wliitish-ash, with a broad, basal, 

 smoky line, and checkered with smoky-ash; beneath whitish, with more 

 regular lines than ajjove. Costu dull smoke-gray, interrupted by dull white 

 spots. The four discal dots large, black, very distinct; several obsolete trans- 



