01 K \ T U A-E U 110 V 15 A N TRICHOPTKIIA. 



135 



maxillares articulo basali brevissimo, sub frontem occulto; 

 2° et 3° brevibus, subtriangularibus ; 4° longiore, tenuiore ; 

 5° perelongato, gracili, ceteris sequali : labiales parvi. Pedes 

 graeiles, pubescentes ; 2 tibiis tarsisque paullo dilatatis. 

 Abdomen parvum. Alae antica3 pubescentes, elongatso, ad 

 apicem vix latiores, valde obtusse ; cellula discoidali parva, 

 oeclusa ; cellulis apicalibus 1, 2, 3, 4, et 5 adsunt : posticse 

 anticis latiores, obtusaa ; radio cum sectore 1° conjuncto ; 

 cellula discoidali oeclusa, cellulis apicalibus 2, 3, et 5 

 adsunt. 



Head moderate, densely clothed with pubescence : vertex rounded, the 

 posterior margin with a large elongate tubercle on each side : front, 

 below the»antennae, strongly developed and somewhat overhanging, 

 truncate or emarginate : eyes moderate : ocelli absent : antennae not 

 longer than the wings, very slender, the basal joint short, and but 

 little thickened, each joint of the thread slightly swollen internally at 

 its apex, thus giving an indistinctly serrate appearance : maxillary 

 palpi with the first joint very short and concealed under the front of 

 the head ; second and third joints short, subequal, somewhat triangular ; 

 fourth joint longer and more cylindrical ; fifth very long and slender, 

 equalling the others united : labial palpi very small. Mesothorax 

 short and robust. Abdomen short ; the males provided with well- 

 developed app. sup. and inf. Legs moderate, pubescent, the tibiae 

 and tarsi of the intermediate pair only very slightly dilated in the 

 female ; anterior tibiae with only one, short, robust, apical spur ; inter- 

 mediate and posterior tibiae each with two pairs of long and more 

 slender subequal spurs. 



Anterior wings long, moderately narrow, of nearly uniform width 

 throughout, the apical portion being very little dilated, apex very ob- 

 tuse, the apical margin oblique and very slightly rounded, costal and 

 inner margins nearly straight ; clothed with short dense pubescence ; 

 longitudinal veins rather strong ; transverse veinlets very indistinct, 

 and for the most part transparent ; subcosta and radius straight, 

 running nearly parallel, both reaching the costa far before the apex ; 

 apical forks 1, 2, 3, 4, and 5 all present, 4 very long, 1 and 2 not 

 reaching the anastomosis ; discoidal cell small and narrow, closed ; 

 median cell (see ante p. 123) longer and broader; sutural area very 

 broad, owing to the inner margin not being concave. Posterior wings 

 one-fourth shorter than the anterior, much broader ; costal margin 

 slightly concave or sinuate ; apex broadly rounded ; subcosta short, 

 extending only to the middle of the costal margin, or slightly beyond ; 

 radius running very close to the subcosta, but becoming confluent 

 with the first apical sector just after the insertion of the veinlet closing 

 the discoidal cell ; apical forks 2, 3, and 5 present. 



