316 THE CANADIAN ENTOMOLOGIST. 



This species is related to albidorsella, grajidis and Coo/eyi, from 

 which it can be separated by its darker colour and smaller size. 

 Type :  i c? , in the author's collection. 



Plaiyptilia 7HOfiticola, n. sp. — Expands, 18-21 mm. Head and 

 thorax fawn-colour; antennas of an even colour, somewhat darker; abdo- 

 men a dark fawn-colour, with patches of hoary scales on the sides and 

 dorsum and on the caudal end of the thorax. Legs light fawn-colour, 

 spurs and adjacent parts of legs brownish, tips of spurs lighter. 



Fore wings : Fawn-colour and salmon-buff. A dark triangular patch 

 at end of fissure, resting on costa and apex reaching into second lobe, 

 beyond the end of fissure ; the outer side of triangle concave ; between 

 the triangle and the outer side is a dark patch extending between the two 

 margins, repeated on the second lobe; on the outer side of this patch is a 

 distinct, white line. The rest of the fore wing is fawn-colour, more or less 

 mixed with black and hoary scales, except for a very conspicuous patch 

 of black scales on the inner margin of second lobe, three-fourths of the 

 distance from the base, and more or less triangular in outline. Fringes 

 white. Feathers of hind wings very dark fawn-colour, scattered over with 

 many darker scales and a few hoary ones. A few black scales towards 

 the base of hind margin of the third feather, reaching in some specimens 

 to a little beyond the middle of the feather. 



Habitat : South Fork, Santa Ana Rive^-, 6,200 ft. altitude, June 26 

 and July i, 1907, J. Grinnell. 



Types : Four examples in the collection of the author. 



Plaiyptilia hesperis, n. sp. — Expanse of wings, 26 mm. Head and 

 thorax ochraceous to ochraceous-buff ; eyes dark brown; antennae light 

 ochraceous-buff or buff, with a {^"f^' lighter coloured hairs along the upper 

 side ; the abdomen, cephalad, is the same colour as adjacent parts of body, 

 caudad it is mummy-brown to Prout's-brown, slightly lighter beneath and 

 at the tip. 



Fore wings : General colour varying from ochraceous-buff to 

 ochraceous, and tawny-ochraceous in some lights, and clay-colour includ- 

 ing the hind wings. A Urge, triangular patch of mummy- or Prout's-brown 

 resting on the costa, one-third of the way from the base, the tip reaching 

 to beyond the end of the fissure, not quite touching, a short distance, 

 nearly halfway into the second lobe ; basally, the wing is ochraceous-buff ; 

 the part beyond the triangle has a central patch of ochraceous, edged with 

 buff bands; next to the inner buff band, which is narrower, is a band of 



