364 MR. J. N. HALBERT : NOTES ON ACARI, 
front margin. Genital aperture strongly chitinized, posterior extremities 
pointed, reaching to middle of second coxae. Epistome with a long central 
spine, and the ends of the lateral spines slope slightly inwards. Maxillary 
plate transverse, with four long hairs. Chelicerse (fig. 1 a) somewhat like 
those of G. oudemansi, Berl. ; fixed chela armed with two stout teeth, the 
extremities of which are truncated and minutely dentate, apex of segment 
bilobed; free chela with one strong tooth slightly recurved. 
First, third, and fourth legs long and slender ; third segment of last pair 
with a sharply-pointed ventral spine. Second legs (fig. 1 h) very stout ; 
femoral calcar of moderate size, curved posteriorly, bluntly pointed ; Cap of 
axillary process flattened and produced towards apex of calcar as in G- oude- 
mansi^ Berl. ; on the outer side of the femur there is a marked chitinous 
prominence (tig. 1 c) with a terminal hair ; genual process well developed, 
cap concave ; process of fifth segment not prominent, its extremity does not 
project beyond the ventral outline of the segment. Tarsi strongly swollen 
at the base and again at the apex; a stout conical tooth stands near the 
middle of the inner surface. 
This fine species is evidently allied to Gamasus magnus, Kramer, and to 
G. oudemansi, Berl. It is however larger, and differs from both in the 
presence of a chitinous projection on the outer side of the second femora ; 
the tarsi and chelicerse are also different. It also resembles the species 
redescribed as " Eugamasus loricatus, Wankel" by Oudemans (38, p. 114), 
especially in the form of the tarsi, but differs from this species in the 
armature of the second legs and in other particulars. 
Locality. Two males found under a sunken stone at high-tide mark in 
company with the local Chelifer duhius (Camb.) at Blount Garrett Wood, near 
New Ross, Co. Wexford, by Mr. R. J. Phillips, 12th March, 1922. 
Gamasellus (Protol^laps) granulatus, sp. nov. (PI. 20. figs. 2 a, 6.) 
A very distinct species belonging to the subgenus Protolwlaps, Berlese 
(13, p. 137). It is remarkable for the comparatively large size of the ventral 
plates, more especially of those enclosing the peritreme. Verified by 
Dr. Berlese. 
Female. Colour yellowish brown, shape pyriform. Cuticle very distinctly 
punctate-striate. The two dorsal plates are ot equal breadth, leaving a 
rather wide uncovered lateral margin ; the second plate is undulate in front 
and almost reaches end margin of bod)^ These plates are minutely punc- 
tured, and there are faint traces of reticulate markings. Hair armature short 
and- stout. Jugular plates absent. Sternum with a bow-shaped front 
margin, rather long, reaching middle of third coxae ; end margin truncate. 
Metasternal phites with a stout hair on outer margins. Genital plate sub- 
quadrate (length 75 yu.), anterior half lying between last pair of coxae. 
Ventro-anal plate large, twice as broad as long (length 100 /x, breadth 200 /i); 
