260 Genus Ixodes 



Our description of /. putus is based upon numerous specimens 

 (</". ? i o) found in Great Britain, one % from Bering Island and one of 

 the type (o) from Kerguelen Island. 



The species has a remarkably wide geographical distribution. As 

 yet it has only been found parasitic on marine birds or infesting their 

 breeding places, where it occasionally attacks man. 



England: It has been recorded from the following localities by 

 E. G. Wheler (1906) : o a on guillemots ; % s on puffins, Morthoe, 

 N. Devon (Pocock); fa, $s, on cliffs frequented during the nesting 

 season by guillemots and other sea-birds, at Bempton and Buckton on 

 the Yorkshire coast (Mr Howett, of York, occasionally found sexes in 

 copula beneath stones) ; on Pinnacle Rocks, Fame Islands (found by 

 Mr Wheler, who has- kindly presented us with some of these specimens : 

 N. 935, 936, 937). We have adults (N. 454, J, ?) found on ledges 

 frequented by guillemots, Bempton Cliffs, Yorkshire, vi. 1908, by 

 Mr O. Grabham, who states that the jackdaws feed on the ticks with 

 avidity. Wales: (N. 968, </" ? o) found on cliffs, Rhosilly, Gower, 

 Glamorganshire, "guillemots, razorbills and puffins breeding there," 

 vi. 1909 (sent us by Dr J. W. W. Stephens). Scotland: (N. 459, %) 

 from seagull, Handa Island, Sutherland, vm. 1908 (presented by 

 Dr W. L. H. Duckworth) ; Mr W. Evans, of Edinburgh, has kindly sent 

 us specimens he collected: (o) from a gannet, Bass, vi. 1910, and ($) 

 from a puffin, Firth of Forth, vn. 1910. He has himself (1906, p. 85) 

 recorded the occurrence of the tick ( $ , o) from St Kilda, on young 

 puffins and fulmars, attached to " the bare skin at the angles of the 

 mouth below the bill, and in the corners of the eyes " ; also on stones 

 and loose turf frequented by the birds. The bites of these ticks are 

 feared by the natives. Wheler possessed specimens from the Hebrides. 

 America: Neumann (1899, p. 127) described specimens (?,o) from 

 the Islands of St Pierre and Miquelon, Newfoundland coast (Baron 

 coll.) ; St Paul's Island, Alaska (G. Marx coll., Smithsonian Institution, 

 Washington, D.C.) ; Cape Horn (E. Simon's coll., now Neumann's). 

 Neumann (1901, p. 283) records o and larvae found on cormorants and 

 penguins, in Tierra del Fuego and the Antarctic (Belgian Antarctic 

 Expedition). Lahille (1905, pp. 26, 138-148) recorded specimens (?) 

 from Phalacrocorax verrucosus (Cab.) Scl. and Salv., Navarin Island, 

 Beagle Channel, Tierra del Fuego, II. 1900, and ( $ , o) from penguins 

 (Spheniscus magellanicus [Forst.] Steph.), Port William, Tussac Island 

 (L. Valette coll.). The ticks were found attached chiefly to the birds' 

 heads and necks. Lahille was struck by the absence of Js. Asia 



