BY E. AIEYKICK. 219 



by the development of pale variegation; all intermediates occur. 

 The costal tuft of hiudwings in $, though peculiar amongst Aus- 

 tralian species, and unusually well-developed, occurs in a less con- 

 spicuous form in many other species of the genus. 



Q. : Killarney(Turner), Rosewood — N.S.W. : Newcastle, Syd- 

 ney — Vic: Mount Macedon (3000 feet), Gisborne (Lyell), Mel- 

 bourne, Trafalgar; from Se|>tember to February. Larva on ivy 

 {Hedera), honeysuck]e(Zo?ticera), Emhothrium, etc. Mr. Lyell 

 found the larvae gregarious, "hundreds together," in a great web 

 on leaves of " mountain ash" on Mount Macedon, perhaps only 

 due to unusual abundance, as I found them feeding separately. 



26. Chresmarcha, n.g. 



Head with appressed scales, face smooth. Antennse in $ 

 moderately ciliated. Palpi rather short, porrected, second joint 

 shortly rough-scaled, terminal short. Thorax without crest. 

 Forewings with 3 from considerably before angle, 7 and 8 in $ 

 stalked, in 9 separate, 7 to termen. Hindwings with 3 in $ 

 remote from angle, parallel to 4, in 9 approximated to 4, 5 rather 

 approximated to 4, 6 and 7 short-stalked. 



Type C. sihj/Uina. This and the next two genera belong to a 

 curious group differing from the normal type of the family by 

 their smooth heads and bright colouring, but otherwise entirely 

 conformable; they appear to be a development of Tortrix. 



151. C. delphica, n.sp. 



(J. 21mm. Head and palpi orange. Thorax pale whitish- 

 yellow. Abdomen pale ochreous, two apical segments blackish. 

 Forewings elongate, suboblong, costa without fold, towards base 

 strongly, posteriorly slightly arched, apex obtuse, termen rounded, 

 slightly oblique; silvery-white; costal edge black, from near base 

 to apex with a series of attached irregular black marks at first 

 very small but gradually increasing to near apex, where they 

 reach } across wing; a transverse black spot in disc near termen; 

 a narrow black streak along termen, tending to be interrupted 

 into two or three separate marks on lower half; apical area 



