SCOTTISH TARDIGRADA 91 



also in the Arctic list. Four of the same species (E. wendti, 

 E. oihonnce, M. coronifer, M. areolatus), with many other Arctic 

 species, have recently been found by Heinis in the Alps. 



NOTES ON THE SPECIES. 



Echiniscus suillus, Ehr. (4). Hitherto recorded generally as E. 

 mutabilis, Murray (6), occasionally as E. arctomys, Ehr. (4). 

 The records as E. arctomys originated simply in an error 

 in quoting a reference to a figure in Ehrenberg's " Mikro- 

 geologie " (5), whereby Prof. Richters came to regard arctomys 

 as a species having v. and vi. separate. This is admittedly 

 not so, and there are no British records of the true arctomys. 



Richters now recognises E. suillus as having v. and vi. 

 separate, and if this is admitted E. mutabilis must be united 

 with it, as the differences are very slight. I follow Prof. 

 Richters' authority in this identification, although doubtful of 

 the advisability of trying to establish suillus, since its recogni- 

 tion depends solely on the figure, which is a side view, and 

 can therefore tell us nothing as to which plates are paired. 



E. kerguelensis, Richters (15). Loch Morar ; summit of Ben 

 Lawers ; Kerguelen, and Australia (10). Very near E. 

 arctomys and E. wendti, distinguished from arctomys by the 

 " fringe," the inner barbs, and the weaker granulation ; from 

 wendti by the shorter seta a, and the smaller barbs. 



E. ivendti (\\\ Summit of Ben Lawers. Recently found (1910) 

 on the summit of Snowdon. It is interesting to find this 

 Arctic species occurring on mountain tops in Britain. 



E. viridis, Murray (10). Discovered in Loch Morar, and after- 

 wards found in Loch Ness. Only dead skins were found, and 

 the species was not described, as I did not know what value 

 to put on the colour, till it turned up alive in Hawaii in 1909. 

 The green colour is confined to the plates, and the proximal 

 part of the 4th legs, as far as the fringe. Internally the 

 animal is of the usual Echiniscus red. Seta a is very short, 

 and the claws are very large (25/^1). 



E. blitmi Richters (11). Broughton, in the County of Peebles, 

 among tree moss, abundant, 1906. Larvae from Broughton 

 measured iio/v., and had all the processes as in the adult, and 

 proportionately as long. 



A larva from Maxwelltown, Kirkcudbrightshire, was 

 similar in every respect except that it lacked seta b, and 

 was considerably larger (150^). 



Echiniscus spinuloides, sp.n. (Plate I., Figs. \a to ic.) Synonym : 

 E. spitsbergensis, Scour., var. spinuloides, Murray (9). 



