118 THE CANADIAN ENTOMOLOGIST, 



Hydriomena occidens, n. sp. 



Expands 30 mm. Palpi short, fuscous ; front gray ; thorax light 

 gray, intermixed with black, becoming white at middle above, and with 

 black edge behind ; abdomen gray, mixed with black, segments white 

 lined posteriorly ; fore wings white with shadings of fuscous generally 

 evenly distributed, emphasized somewhat on veins, forming wavy, very 

 indefinite lines, and giving a general mottled appearance. The veins are 

 marked with fine clear black, broken into dashes of even or nearly even 

 lengths, these showing very sharply on posterior and outer portions; 

 marginal line black broken ; costa more broken in colour than rest of 

 wing ; a rounded broken black line close to base ; hind wings white with 

 fuscous tinge ; discal spots fine, black ; margin black, broken ; beneath 

 light fuscous, broken into shadings. On fore wings an outer broken band 

 of blackish spots, and one or two spots indicating another on hind 

 wings. 



Oregon. Type in National Museum, No. 3922. Another specimen 

 in my own collection. 



Hydriomena grandiosa, n. sp. 



Expands 36 mm. Palpi moderate, blackish fuscous; front fuscous; 

 thorax fuscous gray, marked with reddish on anterior part and on posterior 

 tufting ; abdomen light gray in front, more blackish posteriorly, segments 

 whitish lined, with more or less of reddish dorsally ; fore wings strongly 

 pointed at apex, with posterior angle stronger than usual, marked with 

 dentate wavy even bands, subparallel to each other and outer margin ; the 

 middle rather broader, inclosing discal spot, whitish, those on either side 

 of it darker than the rest of wing ; three more basally, the middle one 

 somewhat darker than the two others ; the whole wing with more or less 

 of reddish, more especially evident on outer dark band and outer space ; 

 a submarginal row of black points on veins ; marginal line black, broken 

 somewhat, wavy ; fringe interlined ; hind wings whitish, fuscous stained 

 two faint median lines, outer shadings and black wavy marginal line; 

 beneath even fuscous, two lines showing on all wings beyond black discal 

 points, on hind wing the outer emphasized with black points on veins. 



Fort Yuma, Ariz., April 4th. Belonging near H. neo-mexicana, 

 Hulst. Type in National Museum at Washington, D. C, No. 3927. 

 Another specimen taken at light in April is smaller, somewhat darker, 

 and without reddish on fore wings. 



