228 [NoTemlxjr, 



companions on the Barharea : Mr. Jeffrey had also varied the food o£ 

 some of his larvae, by giving them Gardamine amara, and he found they 

 took to it freely ; the result of these experiments tended to the belief 

 that though the Barlarea is at least one of their natural food-plants, 

 yet that there are other plants liked by them quite as well to be found 

 amongst the tribe of CrncifercB. 



The larvse moulted thrice, first from the 8th to 10th of August, a 

 few rather later, the second moult happened with most of them on the 

 17th ar.d 18th, and the third moult occurred with some on the 21-th, and 

 all had safely accomplished that operation by the 27th of the month. 



By the 9th of September, all were full-fed and shut up in cocoons 

 of earth, more or less in small companies partly clustered together, 

 many attached to the leaves lying on the surface of the ground, in 

 which none had gone to any great depth. 



The perfect insects were bred, the first by Mr. Jeffrey, as early 

 as June 29th, 1882, followed by a very great number in his cages, 

 where they continued to appear at intervals, often three or four to- 

 gether, and occasionally six at a time, up to the 27th of July, — though 

 Math me the first appeared on July 14th, and then my anxiety was 

 dispelled by a feeling of great satisfaction at the completion of data 

 for this history. 



The egg of strainentalis is ovate in shape, very flat at first, but 

 swells gradually, and in about six days appears to be finely reticulated 

 on the surface, and is then glistening and of a brownish-ochreous 

 yellow colour, transparent enough to show through the shell the 

 greenish embryo coiled round within, and surrounded with yellow 

 granules ; on the seventh day it is more filled out and rather prominent, 

 and then becomes a little dingier in tint, and hatches on the day fol- 

 lowing. 



The newly-hatched larva is green, and rather transparent, with a 

 flattened black shining head and dark brown neck-plate, and on the 

 body can just be discerned most minute black dots and hairs ; after 

 eating out little pits and channels from the cuticle, causing transparent 

 blotches on the leaf for about five or six days and acquiring more 

 colour, it becomes of a very pale watery-green as it lays up to moult. 



After the first moult it eats holes quite through the leaf, and its 

 ravages are very jierceptible ; its head is black, the back dark green, 

 the belly pale watery-green, the sides of the shining neck-plate dark 

 brown, while the middle of the plate is of the same green colour as 

 that of the back, the wart-like spots are of the ground colour but 

 have dark brown centres bearing single hairs, and a pale ring is at the 

 base of each spot. 



