44 WILLIAM G. DIETZ, M. D. 



TINEA L. 



Head entirely rough haired. Maxillary palpi long, polyartieu- 

 late, plicate. Labial palpi moderately long, more or less porrect, 

 somewhat drooping, ar else semi-ascending, cylindic, the second joint 

 often thickened towards the apex, in some species roughened beneath 

 with scales; generally with spreading apical setse; terminal joint 

 shorter than the second, more or less acutely pointed. Tongue very 

 short or nearly obsolete. Antennae shorter than the forewings, gen- 

 erally a little thicker and very finely pubescent in the male, basal 

 joint at times with pecten. Forewings elongate, pointed, more 

 rarely moderately wide ; 12 veins, 7 to costa, 4 and 5 free (except 

 rileyi), l b furcate, with or without accessary cell. Hindwings ovate 

 to nearly lanceolate; as wide or wider than the forewings, in which 

 case the costal margin is not or very feebly retuse towards the apex, 

 or else narrower than the forewings, in which case the wing becomes 

 more pointed, and the costal margin is distinctly retuse or emargi- 

 nate beyond the insertion of vein 8. Cilia under 1 in the broader 

 winged to 1 in the narrower winged forms. Hind tibia rough 

 haired. 



A genus of great extent, having representatives in every part of 

 the globe. I have here, as elsewhere, preferred to arrange the spe- 

 cies into groups according to natural affinities, rather than into a 

 long synoptical table, though it must be admitted that in a few 

 instances, especially where a species was known by description only, 

 the given position may not remain tenable. 



The species have been arranged in groups as follows : 



Hindwings as wide or wider than the forewings. vein 8 generally reaches the 

 margin very near to the apex ; costal margin not or scarcely retuse 

 near the apex. 

 Stigmata of forewing distinct. 



Forewings yellow to fuscous. Head never white. 



fuscipiinctella Group. 



Head and ground color of forewiugs whitish occidentella Group. 



Stigmata generally obsolete, first discal always absent; color dark brown, stig- 

 mata, when present, pale croct'overlicella Group. 



Hindwings under 1 ; vein 8 reaches the margin at one-half or three-fifths, eosta 

 emargiuate beyond. Stigmata generally obsolete. 

 Markings of forewings predominantly in longitudinal lines. 



oregonella Group. 

 Without strongly marked longitudinal lines delectella Group. 



