Mr. A. S. Olliff on Australian Lep{doj)tera. 359 



no longer bifid. Fourth change : — Colour similar but 

 brighter, the spines on the first and second segments almost 

 obsolete, and the line connecting the dorsal row of white 

 spots greatly intensified. 



This larva is very sluggish in its habits, but it is extremely 

 sensitive, shooting out its tentacula at the slightest alarm. 



Like the larva the pupa varies much in general colour ; 

 sometimes it is bright emerald-green and sometimes bluish 

 white. 



The butterfly, which is by no means common, made its 

 appearance in August. 



Papilio erectheus, Don. 



This larva I found on a young orange-tree. When young 

 it is marked with alternate patches of glossy brown and 

 white, the brown predominating, and tlie body covered with 

 conspicuous spines. As the larva increases in size its mark- 

 ings change ; wdien adult it settles into a dull green, with 

 large iriegular patches of brown, strongly edged with white, 

 generally three on each side. The spines now appear small, 

 not having increased in the same proportion as the insect. 

 The underside of the abdomen is dull white, except the first 

 four segments, which are brown. The larva, which attains 

 a length of 3 1 inches, is furnished with the dorsal tentacula 

 usually found in the PapilionidjB, and is very sluggish. 



Pupa light green in colour, delicately speckled with black 

 and occasionally with silver ; a bifid projection at the head. 

 Length varying from If to 2^ inches. 



This is the commonest Papilio and the largest butterfly 

 found in Sydney, where it occurs throughout the summer, 

 occasionally in such numbers as to cause considerable destruc- 

 tion in orange-orchards. It also feeds on Xanthoxylum. 



Acrasidse. 



Acrcea Andromacha^ Fabr. 



The larva when adult measures 1^ inch and is of a yel- 

 lowish-brown colour throughout ; each segment bears a whorl 

 of six black tubercles, each emitting a long branched 

 spine. 



Pupa about an inch in length, suspended by the tail ; the 

 thorax and abdomen cream-coloured, the latter with five 

 longitudinal rows of yellowish spots edged with deep black ; 



