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The three species are superficially very close, but delawaricus can be separated from — 
tenuidactylus and ningoris by the second joint of the labial palpi having a projecting ventral — 
tuft which nearly reaches the tip of the third, and tenuwidactylus can be distinguished from " 
ningoris by the position of the median spurs on the hind tibis. In tenuidactylus these spurs are — 
attached to about the middle of the tibise, while in ningoris they are attached three-fifths or more 
of length of joint from its base. 
\ 
Genus PLATYPTILIA Huebner. 
Platyptilia Hiiebner, Verz. bek. Schinnett., 429, 1826. Characters: Front with a prominent 4 
scale tuft in some species, usually with at least a moderate tuft. Palpi short, scarcely exceeding 
front, to long; second joint oblique; third porrect. Tibisx: sometimes with slight scale-tufts. 
Fore wings cleft not more than one-third their length, anal angle evident on both lobes, in some — 
species prominent and in some retreating. Hind wings trifid, third feather with black scales or _ 
scale-tuft in fringes of inner margin in most species. 
1. PLATYPTILIA PUNCTIDACTYLA Haworth, Lep. Brit., 479, 1812. 
Alucita cosmodactyla Hiiebner, Samml. Hur. Schmett., 35, 1823. : 
Primaries brownish-grey to olive-black, with a very variable superficial white irroration. 
Costa with white dots on a blackish ground running from base of wing to cleft. A black 
triangle, paler on the costa, reaches just beyond base of cleft. Third feather of secondaries | 
with black scales along inner margin, a large triangular scale-tooth just beyond middle and a 
small tuft at apex. Expanse, 20-23 mm. E 
This is the cosmodactyla of our previous lists, which Meyrick places as a synonym of | 
punctidactyla. Although only previously recorded from Kaslo, it is widely distributed, as I 
have it from Victoria (Blackmore); Fitzgerald (Carter) ; Goldstream (Blackmore) ; Dunean ~ 
(Day); Wellington (Bryant); Fraser Mills (Marmont); Lillooet (Phair); Mount McLean 
(Hanham) ; Fort Fraser (Anderson) ; Kaslo (Cockle) ; and Chilcotin (Buckell). The species 
extends as far east as Manitoba, south to Illinois, Colorado, and South California. It also 
occurs in Hurope and Japan. It feeds on a number of food-plants; Meyrick (Handb. Brit. Lep., 
453, 1895) gives Stachys, Aquilegia and Geranium as the Huropean food-plants. Dyar records it 
from Kaslo as feeding in the red bracts of the high-bush honeysuckle (Lonicera involucrata). 
Mr. Cockle bred specimens from the Indian paint-brush (Castilleja) in 1907. 
2. PLatypritia PrcA Walsingham, Pter. Cal., Ore., 21, 1880. Primaries white to well beyond — 
base of cleft, followed by a black shade which terminates at the usual transverse white lines on — 
the two lobes. Costa black with white spots and a heavy black triangle before cleft. Terminal 
area brownish with white scales which sometimes cover the darker colour. Third lobe of 
secondaries much as in the preceding species. The abdomen offers the only constant distingyish- 
ing feature. Its upper surface is marked with a large white triangle on each segment, apex 
forward, and the last few segments are almost entirely white. Beneath it is broadly white in 
its distal half. Expanse, 18-24 mm. 
This species is rather uncommon, the specific localities being Victoria (Carter) ; Fitzgerald 
(Blackmore); Duncan (Day); and Wellington (Bryant). It has not been recorded from the 
Mainland as yet. The types were taken at Crescent City, North California, and it has been — 
taken at Seattle and Mount Rainier, Wash. : 
The species varies considerably and in some cases closely approaches punctidactyla. ‘The 
two species, however, can always be separated by the white triangles on the abdomen as noted 
above. 
5. PLATYPTILIA TESSERADACTYLA Linneus, Faun. Suec., 370, 1761. Primaries rather evenly 
greyish, the markings produced by variation in the mixture of white scales, and therefore 
powdery and indefinite. Costa darker, dotted with white, with the usual dark triangle before 
cleft, sometimes very vague. Outer transyerse white line present, incomplete on second lobe. 
Secondaries with dark scales at tip of each lobe and a weak tuft of approximately equal dark 
scales just beyond middle of inner margin of third lobe. Palpi small, scarcely exceeding front. 
Thorax white behind. Expanse, 16-20 mm. 
This is apparently a rare species in the Province. In Dyars “ Kootenai List” he records’ — 
two specimens—Bear Lake Mountain (July 29th) and Kokanee Mountain (August 11th). None 
have been recorded since until this year. Mr. R. S. Thomson, who was with a surveying party 
in the mountains some 10 miles from Princeton, captured a single pterophorid which was deter- 
