LEPIDOPTERA HETEROCERA. 307 



Geometra ulmaria, Bork. Eur. Schm. v. 181, 73. 



Geometra marmoraria, Sepp, Ins. ii. pi. 10, 11. 



Eubyja betularia, H'ubn. Verz. Schm. 318, 3073. 



Amphidasys betularia, Treit. Schm. vi. 1, 230, 1. Dup. Lep. iv. 



271, pi. 153, f. 1,2. Boisd. Ind. 196, 1543. Guen. Phal. i. 



209,313. 

 Biston betularia, Steph. III. Brit. Haust. iii. 159. Herr.-Sch. Eur. 



Schm. iii. 102, 277. 



a — m. England. From Mr. Stephens' collection. 



n— v. England. 



m — x. Europe. From M. Becker's collection. 



y, z. Europe. 



aa. France. 



North America. 

 3. Amphidasys quernaria. 



Mas. — Ligno-fusca ; alee anticce maculis duabus apicalibus lituris- 

 que albis ; posticce pallidiores, striga discali lituraque tremula 

 nigris. Foem. — Flavescente-alba, strigis spatiisque fuscis ; 

 thorax albus ; abdomen fuscum, maculis dorsalibus albis. 



Phala3na quernaria, Abbot, Ins. Georg. ii. 205, pi. 103. 

 Amphidasys quernaria, Guen. Phal. i. 209, 310. 



Georgia, Virginia. 



4. Amphidasys cognataria. 



Albida nigricante-cinereo confertissime punctata ; alee lineis deviis 

 angulosis nigris. A. betularia? simillima ; alee anticae angus- 

 tiores, margine exteriore magis obliquo. 



Amphidasys cognataria, Guen. Phal. i. 208, 312. 



a. North America. From Mr. Milne's collection. 



b. West Canada. From Mr. Bush's collection. 



c. ? 



5. Amphidasys sperataria. 



Mas. Cinerea, ochraceo aut olivaceo subtincta ; antennae late pec- 

 tinatce ; thorax fusco fasciatus ; alee nigro conspersce, lineis 

 duabus nigris obliquis angulosis subparallelis, fascia interiore 

 diffusa nigricante 9 lunulis marginalibus nigris. 



Male. Cinereous, with a slight ochraceous or olive tinge. 

 Antennae broadly pectinated to the tips. Thorax with a brown 

 band in front. Wings thickly black-speckled, with two irregular 

 oblique zigzag nearly parallel black lines, the first having along its 

 inner side a diffuse blackish band ; marginal lunules black. Fore 



