18 DINEURA SELANPRIIFORMIS. 



eyes, wliicli are black, and of the oral region, which is 

 somewhat red. The body is glabrous, with deep 

 transverse folds. The clypeus is truncated, straight ; 

 labium deeply incised, trifid, the middle portion small, 

 the lateral longer, forming two rounded lobes. It 

 walks in a straight line by resting on the anal end, 

 but often, especially in repose, the end is turned under 

 the belly. It feeds on the under surface of the leaves 

 of the common oak. 



The cocoon is small, sub-ovoid, very short, 1'" long 

 and 4'" thick ; its sides are rather fine, blackish, very 

 finely reticulated on the outer surface, to which adhere 

 grains of sand. It is spun in the earth. 



As parasites Giraud mentions : Mesoleius formosus, 

 Gr., M. armillatorius, Gr., Polyblastus palustris, 

 Holm. ? Erromerus fasciatus, Gr., and Plectiscus ten- 

 tJiredinarum, Giraud, the last mentioned being an 

 external parasite. 



A widely distributed species, but not very common 

 anywhere, in May. I have seen it from Aberdeen, 

 Clydesdale, Dumfriesshire, the London district, and 

 Norwich. 



Continental distribution : Sweden, Germany, Hol- 

 land, France, Italy, Morea, Asia Minor. 



5. DlNEURA SELANDRIIFORMIS. 



Dineura selandriiformis, Cam., E. M. M., xi, 252 ; Andre", 



Species, i, 91 ; Cat., 11*, 5. 



Black ; antennae about the length of the head and thorax, moderately 

 thick, the third and fourth joints nearly equal. Head black, faintly 

 pilose ; clypeus and labrum white. Thorax shining, shortly pilose ; the 

 pronotum almost entirely reddish ; tegulse white ; cenchri scarcely 

 visible. Abdomen of the length of the head and thorax, black above, 

 the sides, extreme apex above, and belly dull reddish. Wings hyaline, 

 costa and stigma fuscous, the former paler than the latter ; the first 

 cubital nervure is very faint, the third cubital cellule is longer than 

 broad, widest at the apex. The transverse radial nervure is received a 

 little in front of the middle of the third cubital cellule, the second 

 recurrent a little in front of the second transverse cubital. Legs 

 testaceous, the anterior femora at the base slightly, posterior entirely 



