26 ANNALS OF SCOTTISH NATURAL HISTORY 



closely attached to the under side of a large stone. In three 

 different barns we came on the creatures, and on April i8 we 

 discovered typical nests, made of stable refuse with a tough silk 

 lining. The first nests met with, being empty, did not afford us 

 the full evidence necessary for connecting them with this species, 

 but later nests contained the moults of the animals. The nests 

 varied from 3 to 5 millimetres in cross diameter ; and many nests 

 were placed closely together on one stone. 



On June 28, in the same year, I took my first Scottish specimens. 

 While examining a hay-loft in Walls Street, Glasgow, I found on a 

 piece of wood a False-scorpion's nest containing the moult of a 

 great nipper, and, by sifting rubbish in the neighbourhood of the 

 wood, I obtained three individuals of CJi. patizeri. On July i, I 

 obtained a fourth specimen by a similar process and came on 

 moulting nests on wood and in a clotted mass of straw. Again, 

 on September 14, Aird Whyte and I obtained three adults from 

 the same stable by sifting refuse from one of the stalls. 



Meanwhile, in August 1907, at Balmacara, Messrs. Whyte and 

 I found this species tenanting two byres, from one of which we 

 took eighty specimens. The False-scorpions were living safely in 

 the undisturbed refuse that filled the gaps between planks of wood 

 and the wall, and were so numerous that a single handful of refuse 

 was tenanted by quite a colony. On August 24 a female carrying 

 her embryonic mass was shaken out of some refuse ; she thus 

 appeared to have been living a free life, but she may have been 

 resting in a snug enough cranny of the compact refuse mass before 

 she was disturbed by my intrusion. 



On the East of Scotland the species was detected at the farm 

 of Haswellsykes, Peebles, by^Alastair Urquhart, on September 24, 

 1907. 



{To be continued.^ 



REVISION OF THE HYDRACHNID^ IN 

 JOHNSTON'S "ACARIDES OF BERWICKSHIRE." 



By AViLLiAM Williamson. 



Through the courtesy of Mr. Wm. Evans, F.R.S.E., 

 my attention was drawn to a series of papers by Dr. 

 Johnston, on the " Acarides of Berwickshire," in the early 

 volumes of the " History of the Berwickshire Naturalists' 

 Club." In these papers Dr. Johnston deals with thirty-six 

 species, of which only three are referable to the Hydrach- 



