CATOOALA PROMISSA. 125 



to a stone I had placed there. The moth, a female, 

 appeared on the 24th of July. 



The full-grown larva is two inches and one-eighth in 

 length, the body thickest at the ninth and tenth seg- 

 ments, tapering from thence a little gradually to the 

 head, and a little more to the anal extremity ; the head 

 rises a little on the crown, where the lobes are slightly 

 denned, and is flattish in front ; there is a prominent 

 ridge having a triangular hump on the back of the 

 ninth segment, and a slight elevation occurs near the 

 end of the twelfth, bearing the hinder pair of tubercles 

 more sharply prominent than the rest ; the back is 

 rounded, the belly flattened ; at the junction of the two 

 surfaces just above the legs is a fringe of fleshy fila- 

 ments, more or less branched, though a few simple 

 ones occur amongst them ; the anterior pairs of tuber- 

 cular warts on the back are small and unobtrusive, 

 while the hinder pairs, and the single row along each 

 side, are rather large and bluntly pyramidal, every one 

 having a fine bristle ; the anterior and ventral legs 

 extend laterally at right angles to the body, the anal 

 pair also at an obtuse angle backwards, the third 

 ventral pair long, and the fourth pair longest. The 

 ground-colour is a light greenish-grey, with a distinct, 

 large, pale patch of faint ochreous-greenish on the sides 

 and back of the fifth, another on the ninth, and on the 

 tenth less and less pale, strongly contrasted towards 

 the division by a sooty transverse irregular baud ex- 

 tending down either side from the blackish hump on 

 the ninth to the back of the leg, from whence it spreads 

 behind, at first broadly, then slants off to a point on 

 the lower side of the tenth ; the end of the twelfth 

 segment is a little darkened ; the head is light greenish- 

 grey, reticulated with darker grey ; a transverse streak 

 of black reticulation over the crown extends to the 

 mouth, defining the boundary of the face ; behind this a 

 shorter black streak marks the back of the cheeks ; the 

 face itself is whitish, with a dark greyish streak on 

 either side downwards to the mouth. The thoracic seg- 



