^ 



144 



Hams wpon the Economy of some 



» 



dented within. The legs'were six, short, and of a brown 

 color, a pair beneath the first, second, and third segments. 

 The other segments, were dilated at the sides^ and ter- 

 minated by small brown tubercles. Above these lateral 

 mamrnillary projections was a series of 7 smaller ones 

 each bearing a spiracle or aperture for respiration. The 

 second segment, at the sides, near its anterior edge, was 

 furnished with two large spiracles, and two, still larger, 

 were situated upon the upper part of the terminal seg- 

 ment, near Its tip. The fourth and remaining segments, 

 except the last, had, both above and below, a transverse 

 callous spot, covered with minute projections like a rasp, 

 which appeared to be designed to aid the insect in its 



motions. 



On the fifth of August five of these larvae were trans- 

 formed to pupae, four of which assumed the perfect state 

 on the eleventh, and the fifth on the twelfth of the same 

 month ; from which it appears that the pupa state lasts 

 only between six and seven days. 



The color of the pupa was of a yellowish white, but, 

 as It approached the period of its final change, the body 

 became reddish, and the wing-sheaths brown. Its body 

 was rather shorter and broader than that of the larva ; 

 the abdominal segments were tuberculated at the sides, 

 and were furnished, both above and beneath, in the centre 

 of each segment, with a transverse series of elevations, 

 much larger and more prominent than those of the larva, 

 and tipped with short bristles. The sheaths of the wings 

 and legs were folded on the breast, and those of the 

 antennse under the lateral margins of the first and second 

 segments. When disturbed, the pupa moved about in 

 its habitation, by means of the rasps upon its body which 

 served instead of feet. 



This insect, in its perfect form, resembles Hispa rosea 



