380 . Mil. J. N. HALBERT : NOTES ON ACARI, 
riARABODES AFFINIS, Serl. 
1913. Berlese, 8, p. 72. 
Closely allied to C. marginatus, Michael, but may be known by the clavate 
abdominal hairs. Dr. Berlese assures me the Irish specimens are referable 
to this species, which he records as occurring under bark at Florence. The 
pseudostigmatic organ has a curved upturned stem and a somewhat flattened 
club. The lamellae are broad, flat and granulate, and there appears to be a 
slightly raised ridge in the middle line of the cephalothorax. Interlamellar 
hairs stout and plumose at their extremities. The hairs of the dorsum as 
well as the marginal hairs are clavate, and their extremities are distinctly 
plumose. 
Locality. Common amongst moss and lichens on the Portmarnock 
sandhills, Co. Dublin, in January. The Carahodes recorded as C. marginatus, 
Michael in (39) is the present species. 
OrIBATULA (HeMILEIUS) PLANTIVAGA, Berl. 
1892. Oribatula tibialis, Berlese, 1, Fasc. Ixiv. n. 1. — 1895. Oiibatula phintivaf/a, Berlese, 
1, Fasc. Ixxvii. n, 5 (reference in footnote). — 1916. Berlese, 13, p. 322 (Redescribed). 
Localities. Found near Mulranny, Co. Mayo, in September, and at Lucan 
near Dublin in company with 0. oblonga and other species in February. 
Hull records it as occurring on rock Mchens, Physcia, on the coast at Whitley 
Bay. 
Dameosoma maculosa, Warhurton and Pearce. (PI. 21. fig. 20.) 
1905. Warbuvton and Pearce, 49, p. 567. 
A Dameosoma found under bark in the Tolka Valley near Dublin (January) 
is apparently referable to this species. As it seemed not quite typical I sent 
drawinos to Mr. Warburton, who has kindly verified the identification. The 
species is remarkable for the long, pointed cephalothorax, also the long 
lamellse and the spotted dorsum, though, as the describers remark, these spots 
are in the epiostracnm and are very easily rubbed off. This is so in the Irish 
specimen, in which they remain only near the margins. The pseudostigmatic 
oroans are bent backwards, and carry on the anterior surface at least four 
distinct branches (PI. 21. fig. 19&); anterior margin of abdomen truncated. 
Length 418 /m. 
Dameosoma minus, Paoli, var. lamellata, nov. (PI. 21. figs. 19 a, b.) 
1908. Paoli, 39, p. 48. 
■ The form briefly described here must, I think, be identified as a variety of 
the present species. It differs from the type in the larger size and in the 
presence of well-defined lamellse on the cephalothorax ; in L). minus these are 
rudimentary. 
Cephalothorax rather long and with sharply pointed extremity ; lamella; 
present in the form of two strongly curved ridges I'eaching from beyond the 
