TERRESTRIAL ACAEI OF THE TYNE PROVINCE 45 



4. Cillibano dinychoides, sp. n. 655/^. 67. 



Sub-circular, smooth, shining reddish brown, uni- 

 formly convex. Leg-grooves exceedingly faint. 

 Male genital aperture between coxae iv rather large 

 (width 85/x). Femur ii with a stout conical acute 

 spine underneath. A clavate seta on each side of 

 the anus, projecting beyond the posterior margin. 



Ninebanks, in manure, male only. 



5. Cillibano liitoralis, Trou. 



iVIargin setate, without scutum. 

 Ireland (under stones between tide-marks). 

 U ROSE! US, Berk, 18S8. 

 Type ; acuminalus, Koch. 



6. Uroseius acuminatus, K. 67. 



Cilliba vegetans, Halbert ? 



West Allendale on Pierostichns niger and other 

 beetles not specialised in habitat. I have never 

 met with the adult acarus (my specimens are of 

 course "pedunculate nymphs") but evidently it 

 does not frequent manure or carrion. 



Ireland ? 



7. Uroseius novus, Oud. 67. 



A pedunculate nymph exactly like the preceding, but 

 with a pair of bacillar setae on the hind margin. 



West Allendale, on Necrophorusviorfuonim. Evidently 

 the adult acarus is a carrion feeder, but my carrion 

 "traps" have failed to attract it. 



DISCOPOMA, G. & R. Can., 1882. 

 Type : splendida, Kramer. 



8. Discopoma integra, Berk 440/x. 



Ireland, in sphagnum and under bark. 



9. Discopoma pulcherrima, Berk 



Ireland, with Fonnica fiisca. 



