hystekosia] rHALONIADAK 559 



9. HY8rEi;o.siA, Stjih. 



Tliorrtx smoutli. Forewings in ^ with strong C(_)stal fold ; 

 7 to ternien. Hindwings : 3 and 4 connate, G and 7 closely 

 approximated towards base. 



0\\\y the one species is known. There can be little doubt 

 that it is an early unspecialised form, correctly indicating the 

 line of ancestral connection with the typical I'ortricidae. 



1. H. inopiana, Hw. 19-22 mm. Forewings light ochreous, 

 more or less sprinkled or strigulated with brownish, sometimes 

 reddish -tinged ; sometimes two darker dots in disc beyond 

 middle. Hindwings pale fuscous. 



England to York, W. Ireland, local ; ('. Euro})e, N. America; 

 7. Larva ochreous-whitish ; head and plate of 2 brown : in 

 roots of Artemisia campestris ; 9-4. 



4. TRYPANIDAE. 



Ocelli absent. Forewings : 2 from ])Osterior third of cell, 9 

 out of 7. Hindwings : lower median vein without defined basal 

 pecten of hairs. 



A family of inconsiderable extent ; probably Indo-Malayan 

 in origin, but generally distributed except in New Zealand. It 

 represents an early unspecialised type of the Tortricina, though 

 the larva exhibits vei-y strongly the peculiar tendency of 

 internal-feeding larvae of this group towards a pink colouring; 

 the internal -feeding larvae of other groups being usually 

 whitish. The large size of the single British species (not how- 

 ever always maintained in exotic forms) is doubtless dvie to the 

 wood-feeding habit, which removes the ordinary restrictions of 

 season and food-supply. Imago with type of markings as in the 

 Tortricidae, but ill-defined. 



1. Trypanu.s, Rnmh. 



Tongue obsolete. Antennae -g--§, lamellate throughout, in J 

 more strongly. Labial palpi moderate, curved, ascending, with 

 dense loosely appressed scales, terminal joint very short. 

 Posterior tibiae rough- scaled. Forewings : forked parting-vein 

 well-marked, 8 and 9 out of 7, 8 to below apex, 11 from before 

 middle. Hindwings ovate, densely hairy beneath cell towards 

 base, cilia short; forked parting-vein well-marked, 6 and 7 

 connate or approximated. 



A small genus, yet occurring in all main regions, except New 



