128 



Aware that this Hfe-history is in some respects unique, I will say that 

 I have seen what I describe; also, that a full series of material, from 

 egg to chrysalis, both in alcohol and living, has been sent to Mr. W- 

 H. Edwards, to whose ripe experience and competent pen the subject 

 is promoted, as it was at his instigation and encouragement that the 

 research was pushed to its partial success. 



DESCRIPTION OF THE PREPARATORY STAGES OF 

 PHYCIODES CAMILLUS, Edw. 



By W. H. Edwards. 



Egg. — Conoidal, truncated, slightly depressed at top, the upper 

 third marked by low vertical ribs, the lower part irregularly, thickly 

 and shallowly indented; color greenish yellow. Duration of this stage 

 about seven days. 



Young Larva.— At 12 hours from egg, length .05 inch; cylindrical, 

 thickest anteriorly, each segment well rounded; on 2 a chitinous dorsal 

 long oval patch, on front of which are six long black hairs which bend 

 over the head, and on rear two short straight hairs turned back; below 

 the patch are four hairs to base, one above and one below the spiracle 

 in vertical line, and two shorter, close together, in front of the spiracle; 

 3, 4 and 13 have each six long curved hairs across dorsum to- line of 

 the spiracles, a little in advance of the middle of the segment; 5 to 12 

 have similar rows of four hairs ; on 2 to 7 these hairs are turned for- 

 ward; from 8 to II they are upright; those on last segments turned 

 back; from 5 to 12 there are also two short hairs turned back, on the 

 posterior part of each segment, one on either side mid-dorsal line; 

 below spiracles on 5 to 12 are two short hairs each, the hinder one 

 always a little higher up than the other; there is a further row of one 

 hair to each segment over the feet and prolegs, and in same line on the 

 last three segments; 13 has a chitinous rounded patch with hairs long 

 and short; color green, including the feet and legs; head obovoid, de- 

 pressed at top, the vertices rounded; color black, shining, with a few 

 short, fine hairs, bent down. Duration of this stage four to five days, 

 in September. 



In all respects the larva at this stage is undistinguishable from P/da, 

 the hairs arranged in same manner. 



After first Moult: length at 24 hours from the moult .12 inch; color 

 yellow-green, under side and prolegs same, feet brown; on dorsum are 

 traces of longitudinal brown lines, in some examples obsolete; along 

 upper part of side, outside the upper lateral spines, a brown stripe 

 from 2 to 13; on 2 is a black, long, oval, dorsal patch, with many long 



