JOUBNAL 



OF THE 



ROYAL MICROSCOPICAL SOCIETY. 



JUNE 1885. 



TEANSACTIONS OF THE SOCIETY. 



VIII. — Neiv British Orihatidse. 

 By A. D. Michael, F.E.M.S., F.L.S, F.Z.S., &c. 



{Bead 8ih April, 1885.) 



Plate VII. 



As this paper is entirely descriptive of new species, and of hitherto 

 unknown stages in the life-histories of other species, the adult 

 forms of which have already been recorded, it is necessarily of a 

 technical character, and does not afford much matter of interest to 

 naturalists generally ; a few words may, however, be said as to one 

 or two of the creatures described and the mode of tracing them, 

 which may possibly be acceptable even to those who have not paid 

 special attention to the family of Acarina treated of. 



Firstly, as to the nymph of Cepheus hijidaius. I have, on more 

 than one occasion, called attention to the bizarre and beautiful 

 forms which the nymphs of some of the Oribaiidae assume, partly 

 consequent on the habit, which so many of them possess, of 



EXPLANATION OF PLATE VII. 



Fig. 1. — Cepheus hijidatus, larva. 



2. — Notaspis serrata n. sp. X 100. 



2a. — „ „ pseudo-stigmatic organ x 300. 



3. — „ juncta n. sp., outline of cephalotborax X 200. 



4. — „ toragfiYame/toto n, sp., outline of cephalothorax X 145. 



5. — „ pectinata n. sp., pseudo-stigmatic organ x 250. 



6. — „ clavipectinata n. sp., pseudo-stigmatic organ x 400. 



7. — „ quadricarinata n, sp. x 250. 



8. — „ lanceolata n. sp., pseudo-stigmatic organ X 275. 



9. — DamcBUS sufflexus n. sp., ventral aspect x 65. 

 10. — „ tenuipes n. sp., pseudo-stigmatic organ x 300, 

 11. — Hypocthonius tanatus n. sp. x 140. 

 11a. — „ „ mandible x 800. 



Ser. 2.— Vol. V. 2 C 



