222 DYAR 



Petrophora nemorella Hulst. 



Petrophora nemorella HULST, Trans. Amer. Ent. Soc., 23, 293, 1896. 



Five examples : Yakutat, June 16 ; Popof Island, July 12-15 '< 

 diak, July 20; Saldovia, July 21. This will prove to be munitata 

 also, I believe. 



Petrophora borealis Hulst. 



Petrophora borealis HULST, Trans. Am. Ent. Soc., 23, 292, 1896. 



Nine examples: Berg Bay, June 10; Sitka, June 16 ; Yakutat, 

 June 16; Virgin Bay, June 25; Kukak Bay, July 4. Some of the 

 specimens are remarkably close to P.ferrugata L. 



Petrophora munitata Hiibn. 



Petrophora munitata HUBN., Schmett. Eur., 346, 1803. 



Two examples: Yakutat, June 16, 21. 



Determined by Dr. Hulst, but wrongly, I think. The specimens 

 more nearly resemble the Siberian P. qnadrifasciaria Cl. 



Venusia cambricaria Curt. 



Venusia cambricaria CURT., Brit. Ent., pi. 759, 1839. 

 One example : Sitka, June 16. 



Euchoeca albovittata Guen. 

 Euchceca albovittata GUEN., PhaL, 2, 520, 1857. 

 One example : Sitka, June 16. 



Hydriomene trifasciata Borkh. 



Hydriomene trifasciata BORKH., Eur. Sch., 5, 308, 1794. 

 Four examples: Yakutat, June 16 ; Orca, June 21. 



Tetrads hyperborea Hulst. 



One example, which Dr. Hulst describes as follows : 



Tetrads hyperborea sp. nov. 



Expands 42 mm. Palpi bright ochre yellow ; front ochre ; summit 

 and anterior part of thorax ochre yellow ; thorax and abdomen rather 

 light ochre, the latter somewhat fuscous stained ; all wings light ochre 

 more or less stained with fuscous ; fore wings with basal line showing 

 in three blackish spots, the largest costal, the next at middle of wing, 

 the third at vein i ; just beyond the discal spot, which is very faint, is 

 a broad blackish shading, nearly straight, and reaching across wing ; 

 an outer line of black spots on veins, these diffuse on their edges and 

 running subparallel to outer margin to vein 2, then curved a little out- 

 wardly ; a line of faint diffuse marginal spots ; hind wings with outer 

 line of black dots on the veins ; discal spots present, blackish. Be- 

 neath as above, on fore wings the basal half more fuscous, discal spots 



