28 WILLIAM G. DIETZ, M. D. 



basal and another subbasal line. Abdomen grayish ochreous, tinged with fus- 

 cous. Legs yellowish, tinged with fuscous, tarsal joints of anterior and middle 

 pair dark brown, pale at the apex. 

 Exp. 12.5 0.17 mm.; 0.5-0.8 inch. 



Hub. — Pennsylvania (Hazleton, Maucli Chunk, Baldwin); New 

 Jersey (Essex County, Kearfoot) ; District of Columbia, Maryland 

 (; Phi miner's Island); Ohio (Cincinnati). 



The smallest of our species and quite distinct, varies in extent of 

 costal spots. The costal spot near the apex, instead of enclosing a 

 pale spot, sometimes consists of two distinct ones. 



XYLESTHI4 Clem. 

 Dyar's List, p. 569. 



Head entirely roughened. Tongue obsolete. Labial palpi ascend- 

 ing, second joint with a dense brush of coarse hair beneath, project 

 ing forward ; third joint thin, very short, thickened towards the 

 apex with scales. Maxillary palpi filiform, 3-jointed, scaly, not 

 folded. Antennas two-thirds the wing length, more robust in the 

 male; joints close set with verticillale scales, basal joint broadened, 

 with pecten, rough haired. Forewings elongate, with scale tufts; 

 12 free veins; an accessory cell, vein \ b furcate at base. Hind- 

 wings ovate, as wide as the forewings; 8 free veins, vein 8 inserted 

 at three fifths; costa feebly emarginate in outer half. Hind tibia? 

 rough haired. 



A very distinct genus, not closely allied to any other. Clemens 

 describes the maxillary palpi as "very short and concealed ;" they 

 are distinctly -3 jointed, very slender and rather difficult to see 

 among the rough vestiture of the head. 



The three species heretofore described belong, without doubt, to 

 one pruniramiella Clem., to which, however, I have to add a new 

 and very distinct species. The two species are distinguished as 

 follows : 



Cilia of forewing with dark dividing line, not distinctly barred. 



pruniramiella. 

 Cilia with four light bars Kearibttella. 



X. pruniramiella Clem.— Dyar's List, p. 569, 6476.-- -Head and maxillary 

 palpi whitish; labial palpi and antennse yellowish white, brush of former exter- 

 nally and scale whirls <>f latter ochreous fuscous. Thorax with fuscous spot. 

 Abdomen fuscous. Forewings luteous, with white and dark brownish scales, so 

 arranged as to form more or less distinct transverse lines. In some specimens 



