THE CANADIAN ENTOMOLOGIST. 189 



DESCRIPTION OF THE PREPARATORY STAGES OF GPAPTA 



COMMA, Harris. 



P.Y W. H. EDWARDS, COALBURGH, \V. VA. 



Egg. — Conoidal, the base flattened and rounded; marked by lo 

 vertical ribs which near the base are low, but on upper third are con- 

 siderably elevated, increase gradually in prominence and terminate abruptly 

 around a small flat space at summit ; these ribs are thin and their sides are 

 cut by grooves perpendicular to the surface of the egg ; the spaces between 

 them crossed by many fine striae ; color green. Duration of this stage 5 

 days in April, 4 in July, 



Young Larva. — Length .08 inch; cylindrical, even from 2 to 7, then 

 tapering slightly to extremity ; on 2 is a dorsal chitinous patch on which 

 are six tubercles, three on either side the medio-dorsal line, each with 

 black hair ; below the patch two tubercles, one above, the other below 

 spiracle ; on segments 3 to 13 are two dorsal rows of large tubercles, one 

 to the segment, on the anterior part of same, each with long curved hair, 

 from 3 to 7 turned forwards, the rest recurved ; next, a row of small 

 tubercles from 3 to 13 ; on 3 and 4 these stand in vertical line with the 

 dorsals, but on the other segments they are back of the line of dorsals ; a 

 third row from 5 to 13 of small tubercles, in vertical lineVith the dorsals, 

 and on 2 to 4 these are continued a little below the line of the other seg- 

 ments ; on 3 and 4 is a short row, in line with the spiracles, and a corre- 

 sponding tubercle appears in 13; and below spiracles, from 5 to 13, on 

 the posterior part of each segment, is a minute tubercle ; finally, along 

 base of body is a row of minute tubercles from 2 to 13, on 2, 3, 4 one to 

 each segment, also on 13, but on the other segments two to each ; from 

 all these tubercles proceed hairs, those of basal row turned (k)wn, but of 

 the others, from 2 to 7 turned forward, the rest recurved ; color whitish- 

 green ; feet and legs green; head rounded, bilobed, the vertices rounded; 

 color dark brown ; many black hairs scattered over the surface, curving 

 down. Duration of this stage 4 days in April, 2 days in July. 



After ist moult. — Length .13 inch ; color either brown-black, or black 

 with whitish lines at the junctions of the segments; armed with seven 

 rows of branching spines (disposed as described under mature larva) ; 

 these spines are short, stout, black, and beset with short divergent 

 bristles ; in the examples which have white lines, on segments 4, 6, 8, 10, 

 the spines spring from whitish tubercles, on the other segments from black; 



