Collembola and Thysanura of the Edinburgh District. 255 



and Schaffer (14) has recently recorded it from Spitzbergen 

 and Buenos Ayres. 



Local data.— Bavelaw Moss, near Balerno (Midlothian), in wet Sphagnum, 

 1st and 13th March 1899, a dozen specimens. 



Achorutes viaticus (Linn.), Tullb. 



Achorutes muroncm + A. dubius?, Lubbock's "Monograph." 



Has been met with in widely separated parts of our area : 

 occasionally appears in immense numbers both on the sea 

 margin and inland. It seems to be in the main a northern 

 species, only extending its range southwards along the ocean 

 coasts. It is recorded from Siberia, Spitzbergen, Greenland, 

 Norway, Eussia, Denmark, Hamburg, Britain, Behring Island, 

 and California ; . and recently from Strait of Magellan and 

 Tierra del Fuego. 



Eeuter (12) found this species in Orkney and Shetland, and 

 recorded it as new to the British Isles, but if it be identical 

 with Templeton's A. duhius, it has been long known both in 

 Ireland and England. 



Local data. — Aberlady Bay, Sept. 1896, in immense numbers on the sands 

 for a distance of several hundred yards on the east side of the bay towards 

 Gullane Point— in some places there could not have been less than 20,000 to 

 30,000 in the space of a square yard, so that they were literally present in 

 millions. Musselburgh, Feb. 1897, half a dozen in moss off wall ; Comistcn 

 Road, south of Edinburgh, 11th Nov., great numbers on top of wall adjoining 

 a newly manured field ; Longniddry, Aug.. 1898, a good many in wet hollow 

 on the links ; Colinton Road, west of Edinburgh, 6th Oct., very abundant on 

 wall-top ; Craigentinny beach, Jan. 1899, common on wrack; South Queens- 

 ferry, on wrack, Feb., a few; Comiston, on putrid turnip, March, several. 



Achorutes purpurascens, Lubb. 



Widely distributed in our area, having been met with in a 

 number of scattered localities ; but it appears to be nowhere 

 very common. Probably widely spread over Europe — 

 Sweden and Finland to Italy, Hungary, and Great Britain. 

 Eecorded also from the southern extremity of South 

 America. 



Local data.— Colinton, Oct. 1896, one specimen; Braid Hermitage, same 

 month, one among dead leaves; Dollar, April 1897, two on dead branch lying 

 on the ground ; Dreghorn, Feb. 1898, a few under bark ; Bridge of Allan, 

 VOL. XIV. B 



