NOTES ON LEPIDOPTERA. 
FRoM THE VICINITY OF BRISBANE, THE LARV oF WHICH 
FEED ON LORANTHUS. 
By R. ILLIDGE. 
Read before the Royal Society of Queensland, 5th March, 1906. 
Tur fleshy foliage of the Mistletoe is subject to the attacks 
of a large number of lepidopterous insects, a great many 
being wholly attached to it; to the latter we confine our 
attention, commencing with the Rhopalocera, or true 
butterflies. 
Delias (Pieridz).—This genus is represented by four 
species, viz.—Argenthona, Aganippe, Nigvina, and Har- 
palyce. Argenthona and Nigrina are common, the latter 
especially so. Aganippe is rare about Brisbane, and 
Harpalyce I have never taken, but know oct instances 
of its capture by others; it 1s the common species in 
Southern N.S. Wales and Victoria, and is said (McCoy) 
to spin a curious tough silken web, on which all the larve 
pupate gregariously. The pupa of Nigrina is strongly 
bifid in front. In these four species the upper surface 
of the imago is rather plain, the under possessing all the 
gay colour. There are several broods of Nigrina and 
Argenthona during the year, and a winter form of the 
latter having much more black than in the summer, and 
the basal yellow strongly irrorated with black scales. 
Aganippe and Argenthona are sometimes greatly affected 
by parasitic insects, and probably the extreme rarity 
of the first-named is so caused. Of Argenthona we lately 
bred out a batch of 18 totally unaffected, but of the next 
brood of about the same number all were affected, but 
c 
