THE CANADIAN ENTOMOLOGIST. 229 



DESCRIPTION OF PREPARATORY STAGES OF NEONYMPHA 



SOSYBIUS. 



BY W. H. EDWARDS, COALBURGH, W. VA. 



Egg laid- July i6th, on grass, the female being confined in a bag over 

 a tuft of grass set in a flower pot. Shape nearly that of a semi-ovoid, the 

 base being flattened and the sides at base rounded, the surface under a 

 low power smooth, but under a higher seen to be covered with shallow 

 thimble-like depressions ; color greenish white. 



Hatched July 20th. 



Young larva — Length .09 inch. 



Shape cylindrical, but marked by five or six longitudinal tuberculated 

 ridges; each tubercle sending out a clubbed white hair, some of which are 

 curved forward, others back ; color white ; head much larger than second 

 segment, rounded, bilobed, rather broader than long, the vertices without 

 processes, pilose, shining black. Duration of this stage 6 days. 



After ist moult — Length .2 inch. Shape cylindrical, thickest in the 

 middle, tapering evenly either way, so that 2nd segment is of about same 

 breadth as 12th; tail forked ; color light green ; covered with fine white 

 tubercles, arranged in longitudinal rows, not quite regularly, each tubercle 

 sending out a white hair ; the space between the two dorsal rows is rather 

 broader than between the rows elsewhere, presenting a clear green medio- 

 dorsal stripe ; and at extreme edge of dorsum is also a green stripe, but 

 narrower ; legs, pro-legs and under side green ; head considerably broader 

 than 2, rounded, a little depressed at top, angular at the sides below ; 

 color green, darker than body, much covered with fine white, pubescent 

 tubercles ; ocelli and mandibles brown. To next moult 7 days. 



After 2nd moult — Length .36 in. Shape as before, and similarly 

 marked, the tubercles of unequal size ; the largest arranged in the longi- 

 tudinal rows, but many small ones placed on the ridges caused by the 

 creasing of the several segments ; color blue-green ; head no broader 

 than 2, yellow-green, shaped and marked as before. To next moult 6 

 days. 



After 3rd moult — Length .42 inch. Stout, thickest in the middle, 

 rounding somewhat dorsally ; color pale green ; on either side of the 



