NORTH AMERICAN LASPEYRESIINAE AND OLETIIREUTINAE 145 



sorid ocherous scaling, especially on face and collar. Fore Aving 

 blackish fuscous; maculation indistinct; antemedian and postmedian 

 areas leaden fuscous, poorly contrasted against the slightly darker 

 pattern markings; latter faintly dusted with scattered dull ocherous 

 (in male) or rusty brown scaling (in female paratpye) ; a few faint 

 whitish geminate marks on costa; cilia whitish blotched with blackish 

 and with a black basal band. Hind wing whitish hyaline toward 

 base shaded with blackish outwardly; cilia white with a black basal 

 band ; in male slight notches at veins Ih and 5. Under side of fore 

 wing pale leaden fuscous; costa very faintly marked with white. 

 Under side of hind wing hyaline white with a dark shading at apex, 



Harpe of male genitalia of type figured. Female genitalia as in 

 suhtmhihnn except for slightly larger sigTium. 



Alar expanse. — 15-16 mm. 



Type. — In Collection Cornell University. 



Paratype.—Cdit. No. 28037, U.S.N.M. Also in Cornell University 

 Collection. 



Type locality. — Argus Brook, McLean Reservation, N. Y, 



Described from male type (20 July, 1924) : one male paratype 

 from "Grass Bog 3," McLean Reservation (15 July, 1924) ; and one 

 female paratype from West Ridge, McLean Reservation, New York 

 (25 July, 1924) all received from W. T. M. Forbes. 



A distinct species closest to subnvissanum McDunnough in pat- 

 tern; but with quite different genitalia. The suffused blackish 

 fuscous fore wing and the whitish hyaline base of hind wing easily 

 distinguish it from its nearest allies in Group A. {subnubilum and 

 hicoloranum.) 



Gboup B. — Genitalia of Male with Spined Digitus Projecting from Neck of 

 Harpe away from Sacculus (close to Cucullus) 



21. EXARTEMA QUADRIFIDUM Zeller 

 (Figs. 87, 226) 



Exartema quadrifidum Zeller, Verb. Zool.-bot. Ges. Wien, vol. 25, 1875, 



p. 268. 

 Exartema inornatanum Fernald (not Clemens) in Dyar List N. Amer. 



Lepid., no. 5024, 19t)3. — Barnes and McDunnough, Check List Lepid. 



Bor. Amer., no. 6807, 1917. 

 Cymolomia quadrifida Forbes, Memoir 68, Cornell Univ. Agr. Exp. Sta., 



1924, p. 469. 



This species has also been wrongly listed along with clavana 

 Walker as a synonym of inoi'natanu'ni. It resembles inornatanum- 

 somewhat in general appearance but has quite different genitalia. 

 The whitish scaling upon fore wing is also more confined to longi- 

 tudinal streaks along the veins and not so widely diffused through- 

 out the median and postmedian areas as it is in Clemens' species. 



