British Orihatidx. By A. D. Michael. 199 



lateral ones ; the larval skin bears six or seven transverse markings, 

 which may possibly be traces of segmentation, 



Lives in moss like the perfect creature, and is common in spring 

 and autmnn, 



Damjeus verticillipes. Nic. 



This is probably what is described and figured by Koch as a 

 separate species under the name of Nothrus poJlinosus, fasc. 29, 

 pi. 12 ; it is possible, however, that poUinosus may be the nymph 

 of Nicolet's allied species Datnxus 'papillipes, which he considers to 

 be identical with Koch's puhertdenius, fasc. 29, pi. 3. 



Very like perfect creature, but legs shorter in proportion. No 

 projections to cephalothorax ; colour shiny, semitransparent white, 

 powdered with opaque white dust. It carries the cast skins, the 

 pile being somewhat flatter on the back than in the adult. Each 

 cast skin is edged at the anterior margin and round the sides with 

 long black hairs, sharply bent backwards so as to form hooks ; these 

 hairs are so coated with dust as to look white. Stigmata light 

 brown ; stigmatic hairs like adult, but with a fine point prolonging 

 the rounded distal end. Legs with hairs like adult. The hne of 

 the cast skins prolonging the line of the back horizontally so as to 

 appear like a flat back. The four spikes found on the anterior 

 margin of the abdomen in the adult are not present in the nymph. 



Tegeocranus coriaceus. pi. VL Fig. 5. 



(Perfect form, vol. ii., PI. XI. Fig. 1.) 



Colour semitransparent yellowish white. Cejjhalothorax a blunt 

 cone with curved sides; when very young this part occupies a 

 third, but when full grown not above a fifth of the entire length, as 

 seen from above. It is raised along the median line for about two- 

 thirds of its length from the margin of the abdomen. Stigmatic 

 hairs short, lanceolate, and pointing backward ; hairs on the ros- 

 tnim setiform. Legs not reaching beyond the body behind, and of 

 about equal thickness throughout. Abdomen shield-shaped, rather flat 

 when young, but becoming very arched when full grown ; anterior 

 margin markedly wider than the base of the cephalothorax, nearly 

 straight in the young, but curved in the full-grown nymph ; whole 

 notogastor finely but irregularly punctured, the punctures being 

 frequently prolonged as short striae. Two rows of setiform hairs on 

 the notogastcr and a row round the margin ; these arc all short 

 when young, but longish wlicn full grown. It is one of the species 

 in which the traces of scginoutation can be most clearly scon in the 

 young nymph ; it is figurrd in this stage : when fully grown, it 

 is fatter and rounder lookiufr. 



