[471] NEUROPTEROID INSECTS 163 



base, fifth about its width on thyridial area, upper branch of cubitus 

 fractured at posterior anastomosis, radius bent at pterostigma. Hind 

 wings whitish hyaline, more yellowish at tip, veins yellowish ; fourth 

 apical cell is as wide as third at base. Length 18 mm. ; expanse 

 34 mm. 



Two specimens from Yakutat (June). 



Type. Cat. no. 5263, U. S. National Museum. 



Asynarchus alascensis sp. nov. Plate XXVIII, fig. 16. 



Face yellowish, with pale yellow hair ; vertex black, with pale yel- 

 low hair ; ocelli large, looking outwards ; posterior warts yellow ; 

 palpi pale; antenna yellowish on base, brownish beyond, narrowly 

 annulate with brown, or brown throughout. Prothorax with tufts of 

 long yellow hair ; rest of thorax black, with some yellow hair ; legs 

 yellowish, femora more or less infuscate on bases, spines black ; ab- 

 domen brown. Fore wings dirty yellowish-hyaline, sparingly clothed 

 with yellow hair, black on the veins ; thyridial cell, except base, and 

 first subapical cell, except tip, whitish, with silvery white hair ; veins 

 mostly brown, that closing the thyridial area, a point on thyridium 

 and the arculus white ; radius considerably bent at the pterostigma ; 

 first apical cell fully its width on discal cell ; fifth acute at base, scarcely 

 on thyridial area ; cubitals fractured at posterior anastomosis. Hind 

 wings grayish hyaline, rather yellowish beyond anastomosis ; discal 

 cell only about twice as long as broad at tip, fourth apical about as 

 broad as third at base. Length 14.5 mm. ; expanse 29 mm. 



Four specimens : Berg Bay and Virgin Bay (June) ; Kukak Bay 



Type. Cat. no. 5264, U. S. National Museum. 



In one specimen the silvery marks are scarcely visible. 



Halesus (?) alascensis sp. nov. Plate XXVIII, figs. 19 and 20. 



Face yellow, with black hair on sides and yellowish in middle ; ver- 

 tex brown with yellow hair, ocelli small, posterior warts yellowish, 

 black hair behind the eye ; antenna yellowish ; palpi pale, slender. 

 Prothorax yellow, with yellow hair, rest of thorax black, gray on mid- 

 dle, meso- and meta-scutellum yellow, mostly yellow hair ; legs rather 

 dirty yellowish, spines black ; abdomen brown. Fore wings yellowish 

 in anterior half, brown on posterior half, the division marked by a 

 silvery white line above and a black line below, a black spot at base of 

 the fourth apical cell, pterostigma darker than the nearby regions; 

 veins yellowish ; costal region is very broad, apical margin of wing 

 almost concave, membrane finely rugulose and clothed with fine hairs, 



