5 4 Transactions. — Zoology. 



9. Dipteeina, Meyr. 



Thorax generally with a very small crest, or smooth. Antennae in male 

 biciliated with fine long cilia. Palpi moderate, porrected, second joint 

 triangularly scaled. Forewings with costa simple in male. Hindwings not 

 broader than forewings. Forewings with 12 veins, 7 and 8 separate, 7 to 

 hindmargin. Hindwings with 8 veins, 3 and 4 from a point, 5 slightly (or 

 rarely strongly) approximated at base to 4, 6 and 7 stalked (rarely separate). 



Distinguished from Tortrix by the long fine biciliations of the antennse, 

 and usually by the stalking of veins 6 and 7 of the hindwings. There are 

 several Australian species. Of the three given hereafter, D. imbriferana is 

 a typical species of the genus. D. incessana differs in some respects, having 

 veins 6 and 7 of hindwings separate, and more elongate palpi, for which 

 reasons I formerly referred it to Arotrophora, but it is without the charac- 

 teristic antenna! dentations of that genus, and the antennae appear here to 

 furnish the most reliable characters. D. j a eta tana also diverges in respect 

 of the separation of veins 6 and 7' of hindwings, and in having vein 5 

 closely approximated to 4 at base ; acquaintance with the male shows its 

 former conjectural position to have been erroneous. The three species are 

 very dissimilar and easily distinguished : — 



A. Forewings whitish . . . . . . . . . . . . . . 25. imbriferana. 



B. „ ochreous or fuscous. 



1. A sinuate black streak in disc . . . . . . . . . . 23. jactatana. 



2. No black streak . . . . . . . . . . . . . . 24. incessana. 



23. Dipt, jactatana, Walk. 

 (Batodes jactatana, Walk., Brit. Mus. Cat., 317 ; Sciaphila flexivittana, ibid., 353 ; 

 Pcedisca privatana, ibid., 382; Grapholitha voluta, Feld., Beis. Nov., PI. CXXXVIL, 39.) 



Minor, alis ant. ochreis, saepe fusco-suffusis, postice fusco-maculatis, 

 striga disci antica sinuata nigra ; post, griseis. 



Male, female. — 18-19 mm. Head, palpi, antennae, and thorax brownish- 

 ochreous or fuscous ; palpi rather elongate, externally dark fuscous. Abdo- 

 men ochreous-grey. Legs whitish-ochreous, anterior and middle pair 

 suffused with dark fuscous, except towards apex of joints. Forewings 

 moderate, somewhat dilated posteriorly, costa moderately arched, hind- 

 margin slightly sinuate, not oblique ; varying from light brownish-ochreous 

 to fuscous, paler towards anterior half of costa; a sinuate blackish streak 

 in disc, reaching from near base to middle, anterior extremity obscurely 

 bent downwards to inner margin ; five or six small dark fuscous spots on 

 costa, the two last coalescing below costa; a small dark fuscous spot in 

 disc beyond middle, another on middle of hindmargin, and a third on anal 

 angle ; all these spots obsolete in darker specimens : cilia light ochreous, 

 with a fuscous line near base. Hindwings grey ; cilia whitish-grey, with a 

 grey basal line, 



