VOL. XVII. LONDON, ONT., OCTOBER, 1885. No. 10 



HISTORY OF THE PREPARATORY STAGES OF VANESSA 



MILBERTI, GoDART. 



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



EGG. — Conical, the base flattened, the top rounded ; ribbed verti- 

 cally, the ribs being either 8 or 9 in number ; these rise from the surface 

 at about one third distance from base, increase in elevation gradually, and 

 end at the summit about the little flattened space which contains the 

 micropyle, with its rosette of minute reticulations ; the ribs meet the sum- 

 mit at an angle of about 45° ; in the last part of their course they are 

 thin, and are grooved on both sides to the surface ; between them are 

 many fine horizontal striae ; color green. Duration of this stage probably 

 4 or 5 days. 



YOUNG LARVA. — Length ih inch ; color yellow-green ; cylindrical, 

 nearly even from 2 to i o, the segments well rounded ; marked by rows of 

 fine black tubercles, each of which gives out a black hair in length about 

 equal to the diameter of body and nearly all straight ; these tubercles are 

 flat, like circular disks, and the hairs are barbed (as seen under a high 

 power) ; 2 has a sub-oval chitinous black dorsal patch with two rows of 

 tubercles, six in front row, and two behind, these last standing between 

 the second and third from each end of front row ; the hairs longer than 

 elsewhere and bent over head ; on 3 and 4 each is a straight cross row 

 over dorsum of eight tubercles, four on either side mid-dorsal line, and 

 the third tubercle from top has two hairs ; after 3 and to 13 are six tuber- 

 cles each, disposed differently, four being on the front part of the seg- 

 ment, but not in straight line, the lower one of either side being a little 

 behind the upper one, and the third tubercle lying between the two others, 

 on the last part of the segment ; these form three longitudinal rows from 

 3 to 13 ; on extreme end of 13 is an oval chitinous patch with several 

 tubercles, the hairs straight and horizontal ; below the spiracles from 4 to 

 12 are two short hairs each, from minute tubercles, the posterior one 



