386 ME. J. N. HALBERT : NOTES ON ACARI, 
95/14. Legs very stout (length of first pair 264 /a, of fourth pair 254 /a), with 
strong dorsal hairs, which are spiculate at the base (PI. 22. fig. 26 c). 
Locality. A single specimen found amongst wet moss from the banks of a 
mountain-stream at Glencullen, Co. Dublin. Collected by A. W. Stelfox in 
October 1921. 
I have also found amongst moss in a mountain-stream at Kilmashogue, 
Co. Dublin, a Rliaphignathus the identity of which is uncertain. It is very 
closely allied to a form described by Tragardh as R. patrius var. brevipalpis 
(46, p. 470). The Irish specimen differs in the smaller size (length 368 /x, 
breadth 275 /ti) ; it is less rotund, the puncture less regular, and the palps are 
relatively larger. 
Rhaphignathus plumifbk, sp. nov. (PI. 22. figs. 27 a, b.) 
A very distinct species, which may be easily known from its congeners by 
the small size, the strongly plumose hairs, and the beautiful sculpturing of 
the epidermis. Verified by Dr. Berlese. 
Male. Length 210/4, breadth 120 /a. Colour bright red. In shape 
resembling R. siculus, being ovate, though the end of the body is produced 
in a point. All of the body hairs are strongly plumose. The epidermis is 
marked with a very distinct polygonal pattern as well as being punctured 
(fig. 27 b). Ceplialothorax large in relation to the abdomen, carrying three 
pairs of hairs and a strongly-curved pair of frontal hairs. Eyes small yet 
distinct, and placed on the side margins. The main abdomen is much higher 
than the apical part, and is truncated at the end, where there are two rather 
long (40 /a) hairs, curved inwards at the extremities. In addition to these 
there are six pairs of hairs on the dorsum. Epimera well defined ; anal 
plate large, rounded on the front margin. Maxillary plate transverse ; 
rostrum sharply pointed. The palps are very stout, second segment with 
two strongly-plumose hairs. Legs short and robust, armed with both simple 
and plumose hairs like those of the body. 
Locality. A single specimen found under a stone amongst heather on 
Howth Head, Co. Dublin, in September. 
Rhaphignathus longipilis, sp. nov. (PI. 22. fig. 38.) 
Colour blood-red with blackish markings. Form short and broad. Front 
margin obtusely pointed, end margin rather truncated. Eyes small, placed 
near middle of side margins. Upper surface of cephalothorax and abdomen 
with a distinct, raised polygonal network. Abdomen well defined, shoulders 
rather prominent. Hair armature, including the frontal bristles, very lono- 
(about 125 /i), curved towards their extremities, and there is no trace of 
secondary hairs. Epimera small. Maxillary plate transverse. Palps very 
short and robust, distinctly stouter than the legs. The latter are of moderate 
length, and rather slender for this genus. Length 290 p,, breadth 380 /x. 
