50 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
similalis, a male, are unlike those of North American, Mexican, and 
West Indies material but are like those of South American specimens, 
some of which were collected at Montevideo, Uruguay. 
Furthermore, ‘‘Amerique Septentrionale”’ does not appear on the 
type label of similalis; the only localities on it are ““Am. bor. Cuba.”’ 
A line appears to have been drawn through ‘‘Cuba’’ indicating 
cancellation. 
I am much indebted to Mr. Whalley for examining, dissecting, and 
furnishing data on the type material in the British Museum essential for 
verification of synonymy and selection of lectotypes. The types of 
striusalis and intractella were found to be males, not females as in- 
dicated by Walker, and Scopula thoonalis Walker proved to be not 
congeneric with Lozostege. WS. thoonalis is, therefore, removed from 
the synonymy but, owing to lack of genitalia, it cannot be assigned 
elsewhere at present. 
I am also indebted to Dr. H. J. Hannemann of the Humboldt- 
Universitat Museum for making available the type of collucidalis for 
dissection and verification of its synonymy. 
Loxostege occidentalis (Packard) 
Figures 52, 96, 155, 156 
Scopula occidentalis Packard, 1873, Ann. Lyc. Nat. Hist. New York, vol. 10, 
. 260. 
urerean occidentalis (Packard).—Hampson, 1899, Proc. Zool. Soc. London, 
p. 210 [cited as a synonym of Phlyctaenodes similalis (Guenée) in error]. 
Lozxostege occidentalis (Packard).—Fernald, 1903, in Dyar, U.S. Nat. Mus. Bull. 
52, p. 383 (cited as synonym of Lozostege similalis var. rantalis (Guenée) in 
error).—Barnes and McDunnough, 1917, Checklist of the Lepidoptera of 
boreal America, p. 132.—MeDunnough, 1939, Southern California Acad. Sci. 
Mem., vol. 2, no. 1, p. 12 [cited as synonym of Lozostege similalis form 
rantalis (Guenée) in error]. 
Maus (fig. 155)—Alar expanse 18-26 mm. Frons_ conical. 
Antenna pubescent. Midtibia little, if any, thicker than the hind 
tibia; hair-pencil absent. Typical specimens similar to darker speci- 
mens of rantalis in color and maculation, those of occidentalis more 
grayish fuscous and with definition of narrow, sordid white or ochreous 
shading along inner side of transverse anterior and outer side of 
transverse posterior lines of forewing more distinct, terminal dots 
stronger. Examination of the genitalia, however, is necessary to reli- 
ably distinguish occasional pale brownish specimens of occidentalis from 
those of rantalis. 
Genitalia (fig. 52) similar to those of rantalis but with uncus stouter 
and the two basal spines of sacculus stouter, subequal; ventral spine 
one-half or less as long as dorsal. 
FreMALeE (fig. 156).— Alar expanse 20-23 mm. Similar to male in 
color and maculation. Genitalia (fig. 96) similar to those of rantalis 
