214 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



Klots and Dr. F. H. Kindge (New York), and Mr. J. D. Bradley 

 (London), who enabled him to use the materials of the above museums. 

 A special acknowledgement goes to Dr. W. E. Forster (Zoologische 

 Sammlung des Bayerichen Staates, Munich, Germany) who placed 

 at the author's disposal a collection of genitalia slides of the European 

 Acleris species, made by the author during his work in Germany. 



Acleris macdunnoughi, new species 



Figure 1; Plate 1 (fig. i) 



Teras schaUeriana. — Fernald (not Linne), 1882, Trans. Amer. Ent. Soc, vol. 10, 

 p. 8. — Grote, 1882, New check list of North American moths, p. 57, no. 17. 



Alceris [sic] schaUeriana. — Fernald, [1903], U.S. Nat. Mus. Bull. 52, p. 474, 

 no. 5315, 1902. 



Peronea schaUeriana. — Meyrick, 1912, in Wagner, Lepidopterorum catalogus, 

 pt. 10, p. 62 (in part); 1913, in Wytsman, Genera insectorum, fasc. 149, 

 p. 62 (in part). — Barnes and McDunnough, 1917, Check list of the Lepidop- 

 tera of Boreal America, p. 178, no. 7420. — Forbes, [1924], Cornell Univ. 

 Agr. Exp. Stat. Mem. 68, p. 485, 1923. 



Peronea latifasciana. — McDunnough (not Haworth), 1934, Canadian Journ. 

 Res., vol. 11, pp. 296, 325 (fig. 5), 329 (fig. 7); 1939, Mem. Southern Califor- 

 nia Acad. Sci., vol. 2, p. 58, no. 7478. 



Peronea latifasciana form labeculana. — McDunnough (not Freyer), 1934, Canadian 

 Journ. Res., vol. 11, p. 296. 



Antennae dark brown, slightly shot with ochreous, with fine 

 whitish annulation ; at underside somewhat darker without such annu- 

 lation. Head and body iiiddy brown. Forewings whitish brown- 

 gray with fine dark-brown transverse, sometimes obliterate striation. 

 Basal quarter of forewing and a large' triangular or trapezoidal costal 

 spot ruddy brown or black-brown. Often this spot is continued 

 dorsad as a transverse fascia reaching the vein A2+3, or the entire 

 external part of forewing is ruddy brown. Some specimens have no 

 other markings of forewings but the costal spot. Cilia brownish 

 gray, sometimes mixed with whitish scales. Length of forewing, 

 8-9 mm. Hind wings smoky brownish with cilia somewhat paler. 



Male genitalia. — Tegumen rather broad; gnathos with a distinct 

 ventroapical keel; socii very large, erect, extending beyond apex of 

 tegumen. Valvae elongate with distinct subtriangular cucullus; 

 brachiola rather narrow; sacculus narrowly emarginate beyond half, 

 with outer edge of emarginatiou produced downward and forming 

 an acute spine on lower angle of cucullus; external tuft well developed. 

 Aedoeagus short, stout, slightly bent; vesica with 6 to 10 rather 

 thick spinelike, almost equally sized cornuti arranged in two groups. 



Female genitalia. — Sterigma with moderately long parallel lateral 

 lobes suddenly dilated at base. Ostium bursae indicated by a long 

 narrow split. Antrum large, slightly sclerotized, with a short wide 

 blind prominence cephalad. No separate ductus bursae; ductus 



