594 
MR. LUBBOCK ON THE THYSANURA. 
more 
or less triangular black patch on each side of the middle line ; posterior 
margin of the fifth segment black; posterior half of the sixth segment with a black 
patch, which is broad and more or less divided in front; posterior half of the 
seventh segment black ; posterior segment brown. Along the sides are black patches, 
expanded sometimes into an almost continuous black band. 
Length -j^th to -^th of an inch. 
Under logs of wood in Kent, throughout the year. 
In other specimens the markings on the second and fourth segments are scarcely 
visible. The anterior part of the body is paler, the posterior part yellower, and the 
markings of a richer brown. 
The antenna is, in reality, five-jointed ; but the basal segment is very small. The 
apical segment is not distinctly ringed, as is the case in the following genus. 
The mandibles have four or five teeth. 
The tarsus is provided with a tenent hair and two claws, as usual. The large claw 
has two teeth on the under side. The small claw is unarmed. 
Degeeria nivalis, Nicolet. Nicolet's description of this genus is as follows : — " Tete et 
corps d'un gris-jaunatre ; ce dernier oblong, avec une bande transversale noire 
au bord posterieur de chaque segment et une ligne egalement transversale de taches 
irregulieres et de meme couleur presque au milieu du sixieme. Une petite tache 
noire en forme d'ancre sur la tete. Yeux noirs. Les deux premiers articles des 
antennes sont jaunes, les deux derniers gris fonce. Sixieme segment du corps 
aussi long que les trois qui le precedent pris ensemble. Pattes jaunes, et queue 
entierement blanche." 
He also describes two varieties. 
My specimens, however, while agreeing in the general distribution of colour, did not 
exactly agree with any of these. The body, at the sixth abdominal segment, was as 
broad as in front ; the black patch on the head was sometimes absent ; the transverse 
dark line was often incomplete in the centre on the first and second abdominal segments, 
and the same was the case with the anterior band of the fourth ; the fifth was dark 
behind ; the antennae were grey ; and, finally, the anterior half of the head had a dark 
border. The species of this genus vary, however, a good deal in the distribution of the 
markings, and I am therefore unwilling to describe mine as new, especially as, in some 
respects, they appear to be intermediate between D. nivalis and D. nigromaculata. 
The saltatory appendage scarcely reaches to the ventral tube. 
Length -^th of an inch. 
Found in some numbers during April and May, under logs of wood. 
Degee 
iia cincta, n. s. Body fusiform, dark brown ; posterior part of head and of meso- 
thorax, as well as the anterior portion of the fourth abdominal and the two pos- 
terior abdominal segments pale yellowish. 
The antennae have the two first segments pale at the base, dark at the apex, third 
gment dark, apical rather lighter. Legs yellowish ; saltatory appendage white. 
