GROUPS AND FAMILIES 87 



This family, which comprises only two genera, is rich 

 in species. We have no less than 69 British species. 



12. ELACHISTID^:. Imago with the head generally 

 smooth ; the labial palpi slender, filiform, generally re- 

 curved and pointed; the anterior wings oblong, or 

 elongate ; the posterior wings lanceolate, or linear 

 lanceolate. Larva with 16 legs ; mostly mining in 

 leaves, often in leaves of grasses. 



This family is of considerable extent, and includes a 

 large number of small species. We have 82 British 

 species. 



13. LITHOCOLLETID.E. Imago with the head rough ; 

 the labial palpi filiform, drooping ; the anterior wings 

 elongate ; the posterior wings linear lanceolate, with 

 long fringes. Larva with 14 legs ; mining in leaves. 



This family contains only the single genus Lithocol- 

 letis. We have 46 British species, many of which are 

 remarkable for their beauty. 



14. LYONETID^E. Imago with the head generally 

 smooth ; the antennae more than half as long as the 

 anterior wings, with the basal joint expanded into an 

 eye-cap ; the labial palpi short, drooping (sometimes 

 wanting) ; the anterior wings narrow, sometimes with 

 prolonged tip ; posterior wings lanceolate, with long 

 cilia. Larva with 16 legs ; mostly leaf-miners. 



This family comprises several small species, divided 

 amongst five genera. We have 23 British species. 



15. NEPTICULID^:. Imago with the head rough ; the 

 antennae short and thick, the basal joint with a mode- 

 rate-sized eye- cap ; the labial palpi short, almost por- 

 rected ; the maxillary palpi rather long, folded ; the 

 anterior wings rather broad, short, and often coarsely 

 scaled ; the posterior wings lanceolate. Larva with no 



