262 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lu 



has no label with the data as to its origin. All specimens examined for 

 the present paper were collected in Manitoba and Quebec, and there 

 are some reasons to suppose that the range of nigrolinea is Umited to 

 the northeastern part of the Nearctic region. Earlier authors con- 

 fused senescens Zeller and nigrolinea, which they treated as syn- 

 onymous. Even Busck (1931) figured the female genitaha of sene- 

 scens as those of nigrolinea. AIcDunnougb (1934) first elucidated 

 this problem, and described and figured correctly the genitaha of 

 both sexes of these two species. On only one point the present author 

 cannot agree with McDunnough, namely, in his treatment oi jerru- 

 giniguttana Fernald as a variation of nigrolinea. This problem is 

 discussed in detail in the section of the present paper deahng with the 

 new species disputabilis. 



Types. — Lectotype (selected by McDunnough, 1934), male (geni- 

 taha on slide 54 7-Obr.), no data (Grote and Robinson Collection); 

 lectoparatype, no data (the same collection) ; both in AMNH. 



Other specimens examined. — One male (without abdomen), 

 Canada (erroneously labeled as "type"), in the Academy of Natural 

 Sciences of Philadelphia. One female, Cartwright, Manitoba (E. F. 

 Heath), USNM. One female (genitaha on shde 402-Obr.), Red Rock 

 Lake, Whiteshell Forest Reserve, Manitoba, May 21, 1954 (C. D. 

 Bird); nine males and five females (genitalia on slides 557-Obr., 

 559-Obr., 560-Obr., 564-Obr., and 565-Obr.), Aweme, Alanitoba, 

 Apr. 4, May 1, 1904; Oct. 19, 20, and 29, 1904; Mar. 24 and 25, 

 Apr. 6, 7, 19, 21, and 26, 1905; Apr. 14-16, 1906 (N. Criddle); one 

 female, Winnipeg, Manitoba (A. W. Hanham); one male (genitalia on 

 shde 551-Obr.), St. Hilaire, Quebec, May 24; AMNH. 



Acleris disputabilis, new species 



Figure 7,b; Plates 6-7 (figs. 17-24), 12-14 (figs. 40-47) 



Peronea nigrolinea var. ferruginiguUana. — McDunnough (not Fernald), 1934 

 Canadian Journ. Res., vol. 11, p. 294; 1939, Mem. Southern California Acad. 

 Sci., vol. 2, p. 58, no. 7475a 



Antennae more or less dark gray-brown, usually with white and 

 black annulation basad. Head whitish gray to ochreous gray; as a 

 rule, scales black checked at tips and (or) middle. Labial palpi 

 externally concolorous with head, more or less black checked; intern- 

 ally whitish to pale ochreous. Thorax as head or darker, sometimes 

 dark brown. Forewings whitish gray to ash gray or brownish, finely 

 powdered \vith dark gray to blackish brown, and with many similarly 

 colored tufts of raised scales. Some of these tufts arranged in nu- 

 merous fine obhque transverse lines directed from costa externad. 

 Or, forewings with a rather broad transverse fascia slightly behind 

 middle, consisting of two or three dark gray spots confluent or sep- 



