FURTHER NOTES. 579 



edge, instead of from its lower angle ; in other respects 

 the specimens agree with 0. setosa. In these excep- 

 tional cases the specimen may be distinguished from 

 O.fuscipes by the short pseudo-stigmatic organs, those 

 of 0. fuscipes being long, by the general form and 

 position of the cusps, the femora of the second pair of 

 legs, &o. 



Since the publication of vol. i, I have found 0. setosa 

 rather abundantly in an old thatched roof at the Land's 

 End, Cornwall. 



Orihata quadricornuta (p. 247).— The nymph often 

 carries the cast notogastral skins of the larva and 

 nymph, like a series of blunt conical bags, one more 

 or less within the other, forming a conical pile on the 

 back. 



Oribaf a punctata (p. 253). — Berlese in his ' Acari, &c. 

 Ital.,' fasc. iii, describes a species which he calls 0. 

 Nicoletii ; it seems to me, however, to be only 0. 

 ^punctata. See also same work. Notes, fasc. iv, p. 52. 



0. punctata has a comb-like hair upon the second 

 tarsus not mentioned in the description in vol. i. 



Orihata cuspidata (p. 260). — The rostral hairs in this 

 species are serrated. 



I here give a description of a nymph which I have 

 figured in PI. LIII, fig. 2. I had not discovered it 

 when the first volume was published. 



From this nymph, which I found in some numbers 

 near Stone in Staffordshire, feeding on lichen in a cave, 

 I bred an imago which I was not able to distinguish 

 with any certainty from Orihata cusjyidata ; the imago 

 was also tolerably abundant in the lichen. It will be 

 seen that this nymph differs considerably from that 

 from which I formerly bred the species (PI. X, fig. 7). 

 The mere difference of colour produced by greater 

 transparency, allowing the colour of the alimentary 

 canal and the food contained therein to be seen, might 



