BY R. J. TILLYARD. 42 1 



Family ITHONIDtE. 



Large, stout-bodied lacewingsof .superficially moth like appear- 

 ance, the females larger than the males. 



Head : — Antennae filiform, tapering, the hasal joint stout, the 

 ivst formed of from 40-50 short cylindrical joints, increasing in 

 length gradually from base to tip; length from two fifths to 

 three-fifths of that of forewing ; bases fairly close together. 

 Ocelli absent, or at the most vestigial.* Eyes button-like, pro- 

 minent, occupying almost the whole of the two sides of the very 

 short but rather wide head. Mandibles well developed; without 

 internal teeth. Maxillary palpi five-jointed; labial palpi three- 

 jointed (Text-fig. 6). 



Thorax (Text-fig.5) : — Prothorax strongly built, with the 

 head sessile upon it; much wider than long. Meso- and meta- 

 thora.r both well developed, quite separate; their cox* apparently 

 in two separate pieces (the true coxa, and an attached piece from 

 the epimerum). Legs moderately stout and long, the tibise with 

 a pair of strong apical spurs, the tarsi five-jointed, the most basal 

 joint being the longest, the next three decreasing in length, the 

 last joint longer again; tarsal claws and a bilobed empodium well 

 developed. Large spiracles present between prothorax and meso- 

 thorax, and also between meso- and metathorax (Text fig. 5, 

 sp.,, sp..). 



Wings : — Forewings of tougher consistency than hind, some- 

 what leathery. Both pairs of wings fairly wide, held roof-like 

 over the body when at rest. Costa of forewing slightly arched 

 near base, so that the costal space is slightly widened; a humeral 

 recurrent vein present ; costal veinlets numerous, sometimes 

 branched or connected by cross- veinlets. 8c and R, close 

 together, connected only by a single cross-vein near base, and by 

 one or more towards apex. Apparent radial sectors one or more, 

 with a moderate number of pectinate branches; frequently the 

 original dichotomic branching of R44-5 is retained. R, markedly 

 bent concavely to the costa in the pterostigmatic region, with a 

 number of closely-set branches. M two-branched, connected 



* Newman says "Ocelli 3," but this is surely an error! 



