386 Mr. A. Hempel on some 
Very young larva light greyish to yellowish, elliptical in 
outline, very flat; margin of body but slightly crenulated, 
but with a fringe of thirty-four large hairs or sete. Antenne 
and legs well developed, the latter with one long claw. 
Vasiform orifice large, broadly subovate in outline. Oper- 
culum elliptical, short, much wider than long. Lingula 
extending to the posterior edge of orifice, subspatulate, with 
the posterior half serrated and setose, terminating in a pair of 
long sete. 
Pupa light yellow in colour, of same size and shape as 
full-grown larva. Eyes very large, dark chestnut-brown. 
Marginal sete: and vasiform orifice as in full-grown larva. 
Adult female light yellow in colour; wings creamy white, 
becoming colourless in balsam, covered with a fine white 
powder. Fore wings with a small dark spot at the distal end 
of the vein, which under the microscope shows that it is 
composed of a number of minute polygonal cells or areas. 
Eyes large, oval, but slightly constricted in the middle, dark 
chestnut-brown in colour. Antenne of seven joints. Length 
‘475 to 500 millim. Approximate length of joints in pp: 
(1) 21, (2) 70, (8) 147-175, (4) 56, (5) 70, (6) 59, (7) 53. 
The length of the joints varies in different individuals, but 
the relative proportions are preserved, these showing that 
joint 1 is very short, joint 3 very long, and joints 2, 4-7 are 
subequal. Legs very long. Length of insect *750—-940 
millim.; extent of wings 3150 millim. 
Adult male: colour, antenne, wings, and legs as in the 
female. Genitalia large, with a strong upward curve. 
Length -940 millim.; extent of wings 2°530 millim. 
Hab. Iguape and Campinas, State of 8. Paulo, Brazil ; 
on cabbage and collards, usually preferring the underside of 
the leaves, but sometimes found scattered on the upper surface 
also. 
The adults fly readily when disturbed. The damage done 
to the plants attacked is considerable, as the leaves become 
yellow, wilted, and covered with a white powder, being thus 
rendered unfit for use. This species is dedicated to Mr. Ernesto 
Young, of Iguape, who first sent specimens, and furnished 
the following notes on the life-history of the insect :—“ The 
female lays about thirty-five eggs, sometimes in a semicircle, 
but frequently also in irregular clusters or singly, taking from 
thirty-five to thirty-six hours for the entire operation. The 
larvee hatch from the eggs in sixty-eight to eighty-two hours, 
and in about five days become full-grown. ‘The pupa stage 
lasts but a few days; so that, under favourable circumstances, 
the life-cycle is accomplished in from twelve to fifteen days.” 
