284 GEORGE D. HULST. 



.species is there any doubt as to the group in which they natural!}' 

 fall, and I have in a sort of a way made Hydrloniena the refuge of 

 species whose S I have not seen, and whose exact reference cannot 

 therefore be given. The sjiecies under it are yet in respect to palpi, 

 antennae, thoracic tuftings, and the position of vein 6 of fore wings 

 very variable, but I hesitate to make any further divisions, as the 

 bulk of species lie midway between the extremes. Trifasclata, the 

 type of Hydrioinena, has very long palpi, and is in some other re- 

 spects rather an extreme species. 



Species : — 



H. sordidata Fab. (H. mulUferata Walk. 



H. trifasciata Bork, H. curviUnea Hulst, u. sj). 



H. californiata Pack. H. immediata Grt. 



H. speciosata Pack. H. costiguttata Hulst, n. sp. 



H. reflata Grt. H. gueneata Pack. 



H. similaris Hulst, n. sp. H. mirabilata Grt. 



H. contmcta Pack. H. unangulata Haw. 



H. sparsimacula Hulst, n. sp. H. neomexicana Hulst, n. sp. 



H. herbicohda Hulst, n. sp. H. audvalata Hulst. 



H. basaliata AValk. H. custodlata Gueu. 



H. latirnpta Walk. If. ahhda Hulst, n. sp. 



H. similaris n. sp. — Expands 28-31 mm. Palpi blackish gray ; front dark 

 gray; thorax same color with more of gray, with a posterior tufting blackish at 

 end. Abdomen fuscous; fore wings base gray, mixed with scattered black scales, 

 limited by a black line somewhat oblique, angled at cell, then a broad band of 

 blackish, lightened with gray scales which run in the form of two narrow broad 

 cross-lines; this band reaches only to the discal point, the outer limiting black 

 line passing through the discal point rounding out to it from costa thence in- 

 wardly to below cell, then outwardly to inner margin ; then comes a compara- 

 tively narrow grayish band, not distinctly limited outwardly, having near its 

 outer edge the outer black cross-line which is wavy dentate, with its two most 

 jn-ominent and equal protuberances between veins 2 and 3 and 3 and 4 ; outer 

 space dark, much lightened behind middle, and with two or three subapical 

 l>lack dashes ; hind wings light fuscous; all margins blackish ; beneath, color of 

 hind wijigs above, on fore wings darker along costa and outwardly towards apex' 



C/olorado. From Mr. Graef. 



H. siblata n. sp. — Expands 28 mm. Palpi fuscous gray ; thorax and front 

 fuscous. Abdomen fuscous, each segment with a black anterior line ; fore wings 

 light gray, with blackish lines and shadings : base dark fuscous, mixed with gray ; 

 ))asal line rounded outwardly at cell, and angled inwardly at la ,• beyond base an 

 intra-discal gray band sprinkled with black scales, then a blackish discal band 

 narrower than usual, scalloped on both sides, the teeth on the veins and towards 



