12 Mr. E. Meyrick on the 



really correct, it would follow from the presence of 

 maxillary palpi that the genus could not be genealogi- 

 cally developed from any other known genus of the 

 family, and must therefore represent a modification 

 (probably much degraded) of a still older type ; on the 

 principle that an organ once wholly lost cannot again 

 recur. From the alleged absence of the third segment 

 of the hind wings (if not accidentally broken) no inference 

 could be drawn without investigation of the neuration. 

 In the absence of further material I merely suggest these 

 points for consideration. 



Alucita. Z. 



Ocelli present, concealed. Antennae in male minutely ciliated (^). 

 Palpi long, curved, obliquely ascending, 2nd joint with rough pro- 

 jecting scales beneath towards apex, forming a more or less promi- 

 nent tuft, terminal joint moderate or long, pointed, slender or 

 thickened m front with rough scales. Posterior tibiae sometimes 

 partially rough-haired above, outer spurs half to two-thirds of 

 inner. Fore wings six-cleft ; no cell ; 5 and 6 absent, 7 fi'ee, 9 and 

 10 absent, 11 out of 8 before or beyond cleft. Hmd wings six-cleft ; 

 no cell ; 5 absent, 6 out of 7, 8 free. 



The affinities are discussed above. 



In the sixth volume of the ' LinnaGa Entomologica' 

 Zeller suggested the name Diacrotricha for a subdivision 

 of Pteropliorus (as then understood, nearly equivalent to 

 the present family), to contain one species, P. fasciola, 

 Z., characterised especially by the terminally dilated and 

 flattened hair-scales of the occiput ; although I regard 

 this character as insufficient, it is possible that the genus 

 may be tenable on other grounds : it is, however, un- 

 known to me. 



The following species appear to be new : — 



Cosmodostis aglaodesma , n. s. 

 5 , 18 mm. Head and palpi ferruginous, frontal ridge white. 

 Antennae whitish. Thorax silvery-white, anterior margin very 

 narrowly, posterior margin rather broadly, ferruginous. Abdomen 

 ferruginous, segments marked alternately with a large trapezoidal 

 silvery-white spot dilated behind (four in all), or with two small 

 longitudinal white marks, beneath wholly silvery-white. Legs 

 ferruginous, anterior pair blackish-ferruginous, obsci;rely banded 



