48 Proceedings of the Royal Irish Academy, 



groove narrow with deep suture, second moderately impressed without distinct 

 suture ; eyes convex, smooth, well-limited ; abdominal tergites rather strongly 

 granulate, all divided, tergite-sternite XI. each with 1 pair of tactile hairs ; 

 galea rather short, distal | with rather short processes; palps (fig. 10) only 

 moderately slender, tiliia distinctly convex in front, fingers rather strongly 

 curved ; the palp is granulate all round including hand ; coxae IV. with 

 posterior margin nearly straight, somewhat more than | as long again as 

 inner ; legs IV. tarsus without tactile hair ; claws simple. L. 2'9. 



S Abdominal sternites much more developed, that of somite IV. strong ; 

 galea smaller, processes minute or absent ; palps with hand somewhat smaller, 

 fingers closing with wider gape ; coxae IV. with posterior margin strongly 

 concave, twice as long as inner ; legs I. greatly strengthened, with hump- 

 liacked tarsixs and gi'eatly enlarged claws, posterior claw of peculiar shape 

 with oddly turned extremity and with a process along its anterior margin. 



Always maritime in Britain, and as far as known at present confined to the east and south. 

 Fifeshire and East Lothian : plentiful along the shores of the Forth in rook-nrevices and under 

 stones. Toikshire, Lincolnsliiie, Norfolk, Kent, and Sussex : plentiful on the coast sand-hills, 

 making its home for the most part in old sheathing bases of inarrara-grass (Ammophila arenaria), 

 sometimes under bark of old stumps of sea-buckthorn and elder, and often found sheltering 

 under pieces of wood, etc., on the sand. Dorsetshire^ (42). 



(28, 30, 37, 48-9, 58, 63, 75, 79, 85, 89.) 



C. cancroides (Linn.J 



AcaruscaTwroideslAww. 1758 (9,)} CHermanni Leach 1817 (13). C. can- 

 croides (Linn.) Simon 1879 (27). C. granulatus (C. L. Koch) Hansen 1884-5 

 (34, 35). 



? Palps somewhat reddish- or tawny- Ijrown sometimes faintly tinged 

 with olive, cephalothorax darker reddish- or olive-brown, abdominal tergites 

 paler brownish- or olive-horny with moderately conspicuous scar-spots ; 

 dull or nearly so, with short, clavate bristles. Cephalothorax strongly 

 granulate surcharged with Ijristle-tuliiercles at least towards sides, second 

 groove more impressed than first Ijoth with distinct suture ; eyes convex, 

 not quite free from granulation towards margin ; abdominal tergites 

 rather strongly granulate, all diWded, tergite XL without tactile hairs, 

 sternite XL with 1 pair ; galea rather short, distall}' \vitli short processes ; 

 palps (fig. 1 1 ) long and slender, tibia almost straight in front, fingers long 

 gently curved ; the palp is granulate all round as far as extremity of tibia, 

 hand with peculiar minute sculpture, dorso-posteriorly trochanter has a few 

 liristle-tubercles and femur a few inconspicuous ones in similar position 



* Acarus cattcroides Linn. 1758, Phatangium cancroides Linn. 1767, tScorjno caucri^ides (T*in]i.} 

 Fabr. 1775, Clielifer cancroides (Linn.) Fourcroy 1785, Obisium cancroides (Linn.) Illiger 1798, 

 Opisium cancroides (Linn.) Illiger 1807. 



