WITH DESCBIPTIONS OF NEW SPECIES. 379 
Localities. Both sexes occurred in nests o£ the ant Lasius niger under 
stones at Tallaght, Co. Dublin, and it was also found in company with Lasius 
flavus on Lambay Island off the coast of Dublin. Mr. A. D. Michael found 
it with ants at Land^s End, Cornwall (33), and Mr. H. St. J. K. Donisthorpe 
records it from other English localities associated with Lasius niger and 
T. ccespihun (Entomologist's Record, 1909 and 1920). 
CiLLIBANO DINYCHOIDBS, Hull. 
1918. Hull, 25, p. 46. 
A male Cillibano found in company with Phaulocylliha virgata (Hull) is 
probably to be referred to the present species. The Irish specimen agrees 
with the description except in the measurements (length about 717 /a). The 
length of the English specimen is given as 655 /x. 
The short description is as follows: — " Sub-circular, smooth, shining reddish 
brown, uniformly convex. Leg grooves exceedingly faint. Male genital 
aperture between coxse iv. rather large (width 85 /i). Femur ii. with a stout 
conical acute spine underneath. A clavate seta on each side of the anus, 
projecting beyond the posterior margin.''' 
As is usual in this genus the marginal plates are entire, and in the present 
species they are separated from the dorsal plate by a very thin line running 
parallel to the margin in the posterior two-thirds of the body. The meta- 
podial line curves inwards from the body margins to a point a little behind 
the insertions of the last pair of legs, and it is widely interrupted in the 
middle line of the body. The I'emale is unknown. 
Locality. One male found at roots of decayed Henbane at Clontarf, 
Co. Dublin, August. 
Labidostomma luteum, Kramer. 
The species recorded in the Clare Island Survey Report (23) as L. comuta, 
Can. et Fanzago, is in reality Z. luteum, Kramer. The former is a much larger 
species and differs also in certain derails of structure ; it has not been found 
in Ireland. 
L. luteum is probably not uncommon in suitable localities in this country ; 
in the Achill and VVestport districts of Mayo it occurs under bark and 
amongst mosses growing on trees. In the Dublin and Wicklow district I 
have found it in pine woods. 
Phyllotbgeus palmicinctum (Michael). 
1883. Leioso7na palmicinctum, Michael, 32, p. 280. — 1898. Liacanis palmicinctum, 
Michael, 34, p. 42.— 1913. Berlese, 8, p. 92. 
Locality. Apparently a rare species in Ireland, two specimens were found 
under stones at Doo Lough, near Muckross, Co. Kerry, in May. It is 
recorded by Michael as occurring on the lichen Peltigera at Land's End, 
Cornwall ; so far as I can ascertain this Acarid has been found only in 
Britain. 
