20 THE VICTORIAN NATURALIST. 



the following descriptions the head is always regarded as the first 

 segment. 



Rhopalocera. 



Delias teutonia. Don. 



Egg. — Cylindrical, slightly narrowing at both ends, longitu- 

 dinally ribbed with about eight deep furrows. The colour is 

 bright orange, arising from the presence of the young larva, as 

 after exclusion the shell of the egg is pure pearly white. The 

 eggs are deposited on the terminal leaves, a little space apart, 

 looking like a series of miniature ninepins, which they much 

 resemble in shape. Of two clusters which 1 examined, one con- 

 25 and the other 19 eggs. Length, 1 mm. 



Young larva (on exclusion). — Dull orange yellow. Head and 

 anal segment blackish brown. Each segment bears a series of 

 long hairs, those of the anterior segments being the longest. As 

 they are hatched, the larvae begin to feed greedily upon the 

 shell of the egg, which they very speedily consume. Length, 2 mm. 

 I regret that owing to the difficulty of procuring the food plant, 

 I was unable to carry the larva beyond the first stage. 



Chrysalis. — Dull white, the colours of the mature insect show- 

 ing through the transparent skin. The head case is pointed and 

 rather rough. The thoracic region highly elevated into a 

 roughened ridge, and bearing at its junction with the abdomen 

 two acute spines. The abdomen is mottled with black, and 

 there is on each segment a small sharp ridge-shaped protuberance, 

 and on each side of this two small sordid-white shining tubercles. 

 The lateral region is broadly white, enclosing the spiracles, 

 which are dull yellow. Wing and antennae cases ample, the 

 latter very distinctly shown. The chrysalis of the male is in- 

 variably one-sixth larger than that of the female. Average 

 length, 18 mm. ; width, 4 mm. Food plant — Capparis mitchellii. 



Papilio erectheus. Don. 



Larva (after ist moult). — The young larva presents a singular 

 general resemblance to that of P. calchas of North America, 

 which, like the present species, is, in its earlier stages, very de- 

 structive to the foliage of the orange tree. Its ground colour is 

 dull pitchy brown, of a much lighter shade dorsally on the 3rd, 

 4th, 5th, 8th, 9th, and 10th segments, and clear chalk white on 

 the middle of the 2nd, the whole of the dorsal and lateral regions 

 of the 6th, and the dorsum of the 7th and 12th. The head is 

 jet black, as are also the extreme lateral regions below the 

 spiracles. From all the segments there issue rather long tuber- 

 cular processes, armed with short setae. Those of the 2nd seg- 

 ment are the largest, and are directed forwards ; the others are 

 nearly upright, or are very slightly directed backwards, these 

 processes being always concolorous with the segments on which 



