THE ENTOMOLOGIST. 79 
Nematus Soe, Voll. 
Larva and imago undescribed. 
I place the description of this insect immediately after that 
of Nematus appendiculatus, on account of its agreement, in 
its different stages, with the latter species. It is new; at 
least I have not been able to find a description of it anywhere. 
Nevertheless, it may probably be Hartig’s undescribed 
Nematus xanthophorus of his table in the first year of the 
“Stettiner Zeitung,” with respect to which paper it is much 
to be regretted that it has never been further worked out. It 
may even be nothing more than the male of Nematus Laricis 
of Hartig, with which he was unacquainted. 
I have called this species Solea, because, like the sole, it 
is very dark on the upper surface and white on the under. 
The larva, which lives on the larch (Larix), is full grown in 
the middle of July (I received full-grown examples on the 
26th of July, 1861, from the late D. J. Wttewaall), and has 
twenty legs; it is entirely sap-green on the back and sides. 
The head is very shining, somewhat broader than in the 
former species, feuille-morte in colour, with two rather large, 
round, black spots, in which the eyes are placed. The six 
anterior legs are glassy green, with brown claws. The skin 
of the back is very strongly wrinkled; the four or five 
anterior segments have on each two transverse rows of 
extremely fine spines. The last two segments are of a 
paler and yellower tint; the ventral surface, together with 
the abdominal and anal legs, are of the same sordid yellow 
colour. 
On the 27th of July these larve began to spin up among 
the needles lying at the bottom of the glass in which they 
were kept. The cocoon was shining, pale brown, and of the 
same size as that of the former species. It was not more than 
ten days before the imago appeared (see figs. d, e). My 
cocoons only produced one imago, a male, which was about 
four millemetres long. The head was rather broad, somewhat 
projecting between the eyes and the clypeus and labrum. 
Eyes pretty large, oval, brown-gray; ocelli very widely 
separated. ‘The head was pale ochre-gray, with a broad 
quadrangular spot on the vertex, of a sordid black tint. 
Antenne, considering the genus, thick and short, pale 
i 
