BY W. W. FROGGATT. 131 



Phylacteophaga eucalypti, n.sp. 



Eggs inserted singly, generally one on either side of the mid- 

 Tib of a leaf towards the tip, seldom more than two upon a leaf. 



Larva 5 lines in length, long, slender, and flattened on the 

 ■dorsal surface. Head small, testaceous, lobed on either side, 

 with the mouth parts fringed with fine hairs. Thoracic and two 

 apical abdominal segments bright golden yellow, median ones 

 pale yellow; thoracic segments of uniform size, rounded on the 

 outer margins, each bearing a pair of short stout semitransparent 

 legs; abdominal segments of uniform size, rounded on the margins, 

 the terminal one rounded at the apex. 



The young larvae feed upon the tissue between the cuticle, form- 

 ing an irregular brown blotch of about 1^ inches in diameter. 

 When full grown they spin a thin silken web, forming an oblong 

 cocoon measuring 5 lines in length and 3 in breadth, in the centre 

 of the gnawed area, which stands out on either surface of the leaf 

 like a small blister. 



Pupa. — 3^ lines in length, slender in form ; eyes black and 

 projecting; ocelli standing out very distinctly on the summit of 

 the head ; head, thorax, and the tip of the abdomen reddish- 

 orange, the tip of the latter bifid; wing-covers small, dark brown. 



When leaves containing the pupte are touched the enclosed 

 insect has a peculiar habit of arching the back and rapping the 

 head and tip of the abdomen against the walls of the cell as if to 

 frighten away intruders. 



The change from lar^ a to pupa takes several days before com- 

 pletion, but the latter only remains about a week in the pupal 

 stage before it emerges as an imago. 



(J Imago. — Length 3 lines. Head reddish-brown; antennae, 

 eyes, a patch enclosing the ocelli, and thorax black; fore and 

 mid-legs dull yellow; with the basal portion of the thighs black 

 in the second pair; hind legs black, with the apex of the thighs 

 light brown. Wings hyaline, nervures pale at the base, darker 

 towards extremities; stigma black. 



