289 



a black scale tuft in the cilia of the inner margin. Vein Cu., from middle of 

 cell, Cug absent. (See pi. XLVIII, fig. 1.) 



Like all previous writers, we liave been unable to examine tbe 

 structures of pygmaeus, the genotype. We have seen two specimens 

 of this species, however, and a careful comparison with the other 

 species regarded as congeneric leads us to believe that the ordinary 

 use of the genus is correct. 



Key to the Species 



1. Abdomen with parallel longitudinal stripes. Third feather of secondaries 



without black scale tuft in cilia parvulus 



Abdomen otherwise. Tuft present 2 



2. Antennae longitudinally striped above 3 



Antennae brown and white dotted above 4 



3. Second joint of palpi with long apical tuft below. Hind tibiae with two 



straight dorsal stripes before first spurs calif ornicus 



Second joint of palpi without tuft. Stripes of hind tibiae in part spiral, 

 and anastomosed distally defectalis 



4. Size small, about 10 mm. expanse. Colors pale, whitish pygmaeus 



Much larger, rarely under 14 mm. Colors darker, brownish lobidaclyhis 



1. Triciioptilus parvulus n. sp. 



Head brown; palpi oblique, slender, exceeding vertex, brown with white 

 dorsal and ventral lines ; antennae lacking. Thorax brown. Legs white with 

 brown stripes, tarsi of first two pairs lacking. Brown stripes of hind legs lost 

 in broad brown bands at bases of spurs. Spurs white with a brown stripe. First 

 pair inserted just beyond middle of tibia and reaching end of joint; terminal 

 pair equal in length to first joint of tarsus. Tarsus whitish, first joint brown 

 above except near base, remainder brown-tipped. Abdomen brown with a pair 

 of whitisli subdorsal stripes, two lateral on each side, one ventro-lateral and 

 a mid ventral pale area which forms a stripe near base, bears a few ventral 

 brown dots near middle, and is completely divided by a brown line toward 

 outer end. 



Primaries dull, dark brown, paler at the base and with some ochreous 

 scales on the lobes. First lobe crossed by a whitish band about one-third from 

 apex, and with a few pale scales indicating the usual band about twice as far 

 from apex. Apical portion with whitish scales. Second lobe similar, without 

 whitish scales in terminal area and with the outer pale band nearer apex. 

 Fringes cnncolorous. with a few whitish hairs in groups along inner margin, 

 and numerous large Mack scales. Of the latter there are six tufts in the some- 

 what damaged fringes along the inner margin of the first lobe of the type, a 

 series on the costal margin of the second lobe, broken at the outer white band, 

 and five tufts on the inner margin. Secondaries and their fringes also dark 

 brown, the third feather without dark scales in the dorsal cilia. Expanse 10 mm. 



Described from one specimen : 



Holotype ? , Vernon ph., La., May, G. Coverdalc, in coll. Barnes. 



