39 86 Proceedings of the Royal Irish Academy. 



Cilliba vegetans (Duges). 



Westport, found attached to a large Dor Beetle {Geotrupcs stercorarius) 

 in July.. 



This specimen is in the nympha homeomorpha stage, and agrees closely 

 with the figure given by Oudemans of this form (73, pi. viii, fig. 35). 



Distribution. — A widespread European species. 



Discopoma integra Berl. 



Clare Island, $ and nympha homeomorpha in sphagnum, July ; Achill 

 Island, females under bark, in decayed wood and in moss, September. 



Not uncommon in these localities. The nympha homeomorpha is smaller 

 (length 407w, breadth 330//) and less elliptical in shape than the adult 

 female, an Irish example of which measures 440^ by 340^. I have also found 

 the female on decayed wood at Glendalough, Co. Wickluw. The male is 

 unknown. 



There is an error in the original description of this species (15, p. 244) 

 which should be corrected. Berlese refers to the marginal plates of the 

 dorsum as follows : — " Scutum dorsi marginale integrum, to turn aeque 

 chitineum, transverse striatulum." An examination of the Irish specimens 

 shows that the marginal plates are not entire, and indeed Berlese's excellent 

 figures of the species, published subsequently (11, pi. ii, fig. 18), make this 

 point quite clear. These plates taper to a point a short distance from each 

 other, leaving uncovered a small part of the posterior end of the body. 



Distribution. — Italy (in moss at Vallombrosa, Palermo, Boma. Berlese). 



Discopoma pulcherrima Berlese. 



A single specimen of this handsome species occurred in a nest of the ant 

 Formica fusca in a decayed birch stump at Glendalough, Co. Wicklow, last 

 September, in company with Uronbovella notabilis Berl. It does not seem to 

 have been recorded from the British Isles. Berlese found it in rotten wood, 

 and also in ants' nests, though he does not mention the species of ant 

 (5, p. 247). 



Phaulocylliba Berlesii sp. nov. (PI. VII, fig. 27a-d ) 



This genus was described by Berlese from Norwegian and Italian speci- 

 mens in 1903 (6, p. 270), and P. ventricosa was indicated as the type species. 

 The genus is briefly characterized as follows : — " Characteres generis Disco- 

 poma, sed scutum marginale dorsi omnino nullum. Scutum dorsuale medium 

 ovale, sat a marginibus discretum. Metapodia ut in Uropodis. Fossulae 

 pedales subevanidae," 



