150 THE ENTOMOLOGIST. 
seen that some were reddish yellow, some greenish yellow, and 
others green. The largest of those I had was 14 mm. long, and 
from this example I have drawn up the following description :—Head 
round and shining, sordid brownish yellow, partially withdrawn * 
into the first segment ; mouth somewhat darker in colour, tips of 
the jaws brown; eyes placed in rather large round black spots. 
Body strongly wrinkled on the dorsum and regularly decreasing 
in thickness from the head backwards, colour yellowish green, 
darker on the dorsum as far as the line of stigmata; the margins 
of these latter were of a darker tint, but were difficult to make out; 
they appeared to me to be elliptic in outline. There were 
twenty-two legs, the six prolegs being glassy yellow and having 
the claws brown. Neither spines nor other processes were 
observable near the anal valve. 
In some few examples the head was greenish gray; in some a 
line of a lighter tint, but somewhat darker at the sides, extended 
along the middle of the dorsum; in others the dorsal line was of 
a purple tint; the one figured was entirely without any dorsal 
line, and this was the case with most of the larve. My larve for 
the most part spun up in the mixture of sand and mould covering 
the bottom of the glass in which I had kept them; in the 
following year, however, nothing appeared from these cocoons, on 
opening one of which a shrivelled larva was found nearly dead, as 
represented, enlarged, at fig. 4. 
I should now have been quite unable to give any further 
particulars about this species, had it not been for the kindness of 
my friend De Roo in communicating to me the results of his more 
successful attempt at rearmg it. On the 11th July, 1870, 
I received from him twelve imagos which he had reared, together 
with a couple of cocoons: the latter resembling those which I had, 
still unhatched. 
The cocoons (fig. 8) are single, rather hard, of a dark brown 
tint, covered externally with grains of sand, smooth and very 
shining on the inside. On sending me the insects Mr. de Roo 
wrote to me that the first imagos appeared on the 19th and 20th 
June, a large number coming out on the latter date; others 
appeared afterwards from time to time up to the 10th July, when 
the last was hatched. 
The following is a description of the perfect insect :—Head 
broad, and, considering the size of the body, large, shining black ; 
