Clare Island Survey — Acarinida. 39 77 



smooth surface, which is but faintly sculptured with scale-like markings, 

 and the hair vestiture is very scanty. The ventro-anal shield is large and 

 rounded posteriorly, and on the anterior margin there is a wide emargination 

 which receives the hinder margin of the genital plate. 

 Distribution. — Germany (Bremen) . 



Seiulus hirsutus (C. L. Koch). 

 Found amongst moss at Portmarnock, County Dublin, in January. 



Seiulus muricatus (C. L. Koch). 

 I have a single specimen of this species, found at G-lendalough, County 

 Wicklow, in November. 



Euphis ostrinus (C. L. Koch). 



Achill Island in moss and under decayed fir cones lying on the ground, 

 September ; Knappagh Wood near Westport, in moss, August. 



This little species is conspicuous in the field on account of its bright red 

 colouring and polished surface. 



Distribution. — Widespread in Europe. 



Paraseius Tragardh. 



Epistome trispiuous. Sternal, genital and ventro-anal plates of the usual 

 laelaptid type. The peritrematic and outer pedal plates are very highly 

 developed, and are fused together. Legs long, tarsi of the last pair attenuated 

 Ambulacra consisting of a lanceolate upper lobe, a pair of narrow mem- 

 branous lobes, and a pair of bristle-like lateral blades ; there are also two 

 long tarso-ambulacral hairs. 



Paraseius italicus (Berl.). (PI. VI, fig. 22a-/;.) 



A single ovigerous example of this species occurred amongst moss 

 gathered from partly submerged stones in a stream on the slopes of 

 Croaghpatrick in July. 



Berlese gives but a short description (9, p. 234) of this acarid, two 

 figures of the upper and under surface were published in a later 

 reference (10). 



The length of the Irish specimen is 561/i, breadth 385^. The dorsal plate 

 is distinctly reticulated. The fused extremities of the pedal and peritrematic 

 plates project in a triangular shape a little beyond the hinder margin of the 

 genital shield. Anal plate very large. The legs measure approximately 

 572^, 451^, 44(V, and 572 M . 



Distribution. — Northern Italy (found under dead leaves on a marsh, 

 Berlese). 



PROC, R.I. A., VOL. XXXI. L 39 



