12 



which in reflata has a single stout central spine terminally whilst 

 in cochiaeata we find three strong spines, two lateral and one central. 



The species is generally rather suffused in maculation but in speci- 

 mens where the postmedian band is clear it is very characteristic, being 

 strongly dentate below costa with two large teeth above veins 2 and 3; 

 we find the same range of variation as is found in albifasciafo— 

 suffused smoky forms, suffused greenish forms, reddish forms and 

 white-banded forms, one of the original types belonging to this latter 

 form ; we would restrict the name to the type with smoky gray suffusion 

 over the wing and for the rather rare white-banded form, correspond- 

 ing to nimotypical albifasciata, we propose the name swetti in honor of 

 Mr. Swell who has named so many forms in this variable group ; our 

 types are two 5 's from Palmerlee, Ariz. 



HvDRiOMENA NUBILOFASCIATA Pack. (PI. II, Figs. 4-8; PI. VII, 



Fig. 6). 



We have nothing to adil to Mr. Swell's comments on this species 

 except to present a figure of the Uncus which is rather intermediate 

 in shape between the fnrcaia and the albifasciata groups ; as Mr. Swell 

 points out one of the characteristic features of the species is the dark 

 terminal band ; the various color forms have been fully treated by Mr. 

 Swell in his notes (C. Ent. 43, p. 79) ; we figure a few of the most 

 striking forms on Plate 11, Figs. 4-8. 



Bamvahrata Stkr. may possibly be a synonym of this species ; we 

 have not had the opportunity to examine the type recently, which is 

 in very rubbed condition, but our notes would indicate that it would 

 fall here. 



The species flies in early spring; our California specimens from 

 Sonoma and S. Diego Co. are dated February and March; we liave 

 the species also from Salem, Ore. (Mar.) and Palmerlee, Ariz. 

 (April) ; Mr. Swett records it from British Columbia. 



Hydriomena manzanita Taylor. (PI. II, Figs. 10, 11; PI. \TII, 



Fig. 1). 



The shape of the Uncus shows a close relationship to the preced- 

 ing species, which is further borne out by the dark terminal band found 

 in both manzanita and iiiibilofasciata; however, in the former species 

 this is not prominent owing to the general dark color. We only possess 



