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 Ysth to yo41i 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 tliis 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 rsth of an inch. 

 Found in some numbers during April and May, under logs of wood. 



Degeeria 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 antennge have the two first segments pale at the base, dark at the apex, third 



segment dark, apical rather lighter. Legs yellowish ; saltatory appendage white. 



