PH1BALAPTERYX L API DAT A. 77 



loped that the markings of the wings could be 

 plainly distinguished on removing the pupa-case. 



I am able, therefore, to offer some descriptions of 

 the earlier stages, but the question as to the proper 

 food-plant remains to be settled; the moths seem to 

 affect coarse grass and rushes, and Galium verum, I 

 understand, grows abundantly where they have been 

 taken by Mr. Fetherstonhaugh. 



The egg is of a long oval outline, one end blunter 

 than the other, flattened, and with a depression on the 

 upper surface ; the shell covered all over with very 

 faint pentagonal network ; colour yellow, changing 

 just at last to olive. 



The young larva is smooth, slender, tapering, pale 

 ochreous, with brownish dorsal and subdorsal lines. 

 After it begins to feed the central part of the body 

 becomes greenish, but after a moult or two, and as 

 soon as it really begins to grow, the ground colour 

 becomes pale greenish-grey (much like that of imma- 

 ture Phibalapteryx tersata), except on the last seg- 

 ments, which, with the belly, are more ochreous, the 

 dorsal line still brownish, two fine lines on the side, 

 and a stouter one just above the spiracles. 



When full-grown the length is rather over seven- 

 eighths of an inch, the figure cylindrical, no longer to 

 be called slender, but moderately stout, and nearly 

 uniform throughout, except the head and second seg- 

 ment, which taper a little, as does also the thirteenth; 

 the skin smooth. The ground colour of the back and 

 sides pale whitish-yellow, the back slightly glaucous, 

 the sides more white ; the thin dorsal line formed of 

 greyish freckles ; the subdorsal rather higher up than 

 usual, formed also of greyish freckles, darkest near 

 the head, and growing paler towards the thirteenth, 

 and bearing both the dorsal tubercular dots. Below 

 on the side comes a fine greyish line, and just below 

 that again a broader and darker stripe, with still 

 darker freckles. The spiracular region and belly are 

 pale buff ; the spiracles and all the usual dots are black. 



