1909. Bagnaix. — Isopods fro?n G!as7ievin. 43 



Triclioniscus pygrmaeus, G. O. Sars. 



Ttichonisius pygmctus, G. O. Sars, Crustacea of Norxvay^ ii., p. 162, pi. 

 Ixxii., fig. 2, 1897. Bagnall, Amu and Mag. Nat, Hist., ser. 7^ xviii.;' 

 p> 474, Dec. 1906 : Ann. de la Soc. Roy. ZooL et Malacol. de Belgique, 

 xJii., pp> 263-266, 1907. 



Not uncommon under stones iu the open gardens, but not seen in the 

 hot-houses. One can generally recognise T. pygmceus iu the field by its 

 small size, coloration, and its rhythmic, almost worm-like movements. 

 Mr. N. H. Foster has latel}- recorded this species from Ireland (Co. 

 Jiown) {Irish Naturalist, vol. xvii., p. 56.) I have taken it in the open 

 country on the Greater Cumbrae (Cl^yde), near A3-r, and Gibside and 

 near Winlatoii, in the County of Durham. In gardens and hothouses, 

 large and small, it occurs more or less profusely in the Clyde area, 

 Edinburgh, Northumberland, Durham, Yorkshire (by the roadside, 

 Romaldkirk), London, Antwerp, aud Brussels. 



Trichonlscus Stebblngri, Patience. 



Trichoniscus StfMingi, Patience, [ourn. Linn. Soc. (ZooL), xxx., pp. 42-44, 

 pi. 7, 1907 ; Bagnall, Ann. de la .Soc. Royale Zool. et Malacol. Belg.y xliii., 

 pp. 127-129, 1908. 



One specimen in one of the hotter houses ; it will, no doubt, be found 

 again if the roots of potted plants are examined. I saw a second 

 specimen, but it escaped in the crevices of a piece of damp rotten wood. 

 It is easily recognised by the usually dark colour of the body and the 

 colourless antennae, uropoda and legs. From a structural point of view, 

 it is one of our most distinct forms. 



First taken by my friend Mr. Patience in the open, and later in various 

 liouses in the Clyde area, where I first had the pleasure of seeing it alive. 

 I have since found it in more or less numbers at Alnwick, Wylam and 

 Newcastle, in the County of Xorthumberlaud ; Kew Gardens, London, 

 and Brussels. 



Trichonlscus pusillus, Brandt. — Not uncommon in the gardens. 



Trichonlscus roseus, Koch.— Common in the houses and in the 

 open. The specimens found in hothouses, conservatories, etc., are 

 almost invariably more beautifully and richly coloured than those found 



outside. 



Genus Haplophthalmus, Schobl. 

 Haplophthalmus lYIcngil, Zaddoch. 

 This very distinct little creature was found not uncommonly iu one of 

 the cooler fern-houses, as well as under stones on a rubbish heap in the 

 open. I have taken it in Scotland, the North of England, London, 

 Antwerp (Belgium), and in the Westphaliau hills at Grune, near Letmathe 

 (Germany). Mr. Beresford tells me he found it not uncommonly in the 

 open at Howth, under a couple of old logs, quite away from any green- 

 houses. 



