BY K. MEYUICK. 479 



In some other respects there is great variation. Certain genera 

 have the antennae of extreme length, thrice as long as the fore- 

 wings, a character which recurs in no other Lepidoptera. The 

 labial palpi never assume the sickle-shaped form so characteristic 

 of the large majority of the smooth-headed Tineina ; occasionally 

 they are quite absent. The presence or absence of the ocelli seems 

 to be of little or no importance generically. The neuration is 

 sometimes much degraded, but when fully present the normal type 

 has all the veins separate and tolerably parallel in both forewings 

 and hindwings ; many genera have a tendency to the approxima- 

 tion of veins 5 and 6 in the hindwings. 



The family may be divided into the following groups, as 

 characterised : 



(1) Adelides. Antennae of ^ thrice forewings: genera 1, 2. 



(2) Tineides. Face usually rough ; maxillary palpi often 

 developed; neuration usually normal: genera 3-21. 



(3) Erechthiades. Face usually rough ; maxillary palpi well- 

 developed ; neuration normal; apex of forewings bent up at right 

 angles to surface in repose : genera 22-27. 



(4) Hieroxeslides. Face smooth; maxillary palpi well-developed; 

 autennse with eyecap : genus 28. 



(5) Argyresthiades. Face smooth ; maxillary palpi rarely 

 developed ; neuration normal : genera 29-40. 



(6) Bedelliades. Face smooth ; maxillary palpi obsolete ; 

 aiitennse often with eyecap ; neuration degraded : genera 41-47. 



(7) Opostegides. Face rough ; maxillary palpi well-developed ; 

 Hutennse with large eyecap ; neuration much degraded : genus 48. 



The first of these groups, the Adelides, is definable as a separate 

 family, if it were thought necessary, but there seems no sufficient 

 reason to separate it from the rest at present. 



In the following de.scriptions I have given characters for all the 

 genera, for the sake of completeness, and tables of species for all 

 the genera ; but I have not thought it necessary to redescribe those 

 species which I have already described before, nor to repeat 

 k]calities then given. 



