166 SIXTH ANNUAL REPORT 



The species is not so prolific as retiuervis^ as I have never ob- 

 tained more than thirty eggs from one female. Nor does it bear con- 

 finement as well. It feeds mostly on oak-leaves, to which it has 

 shown a preference, also, in consigning its eggs. 



The shrill of the male is by no means so loud as of the Oblong- 

 winged species, in which its sound is always drowned in the woods. 

 It consists of a softer seep, zeep^ sometimes uttered singly, but gen- 

 erally thrice in succession. The call is occasionally responded to 

 by a faint chirp from the females, produced by stretching out their 

 wings as if for flight, and is as often heard in the day as at night. 



Scudder says of this species : " His day-song is hzrioi, and lasts 

 one-third of a second ; the night-song consists of a repetition — ordi- 

 narily eight times— of a note which sounds like tcJiw. This is re- 

 peated at the rate of five in three-quarters of a second, making each 

 note one-half as long as that of the day." 



DESCRIPTIONS OF ADOLESCENT STAGES. 



The body of the larva is flattened-pyriforni, large and rounded at the posterior 

 extremity, tapering from thence to the narrow, straight thorax, and widening again 

 into the rather large head. The length, shortly after hatching, is nearly one-fifth of 

 an inch, exclusive of the appendages. The postei-ior legs are about four times the 

 length of the bodj', a)id the antenna? as long as body and logs together. The colors 

 are purplish-black and white, on the head and body arranged in minute regular 

 checkers. The legs and antennaj are principally of the dark color, annulated with 

 white, and giving to the little animal a striking and histrionic appearance. It retains 

 the same form and very much the same colors throughout the larval state — the legs 

 getting to look as if pale, marked and annulated with brown — two annulations on the 

 thighs being especially broad. 



In the pupa state it is quite dift'erent, but no less elegant and characteristic in 

 appearance. The form of the abdomen is more cylindrical and tapering toward the 

 posterior end. The anal stylets of the male and the ovipositor of the female are dis- 

 tinguishable in a rudimentary state. The black and white colors disappear, and the 

 insect is clothed in green, varied by purplish shadings on the sides. Two large, bright 

 crimson spots adorn the top of the thorax, and a pair of small dots, of the same color, 

 the top of each abdominal joint. The wing-pads are wider in proportion to their length 

 than those of 7-etinercis. 



