Collembola and Thysanura of the Edinhurgh District. 231 



Sminthurus niger, Lubb. 



Except in a greenhouse in an old garden in the south side 



of Edinburgh, we have failed to detect this species in the 



district. Owing to its small size (f mm.) and dark colour 



it is, however, easily overlooked. Eeuter found a single 



example in Orkney, and Lubbock's specimens were obtained 



in his garden in the south of England. Widespread on the 



Continent — Sweden, Finland, Germany, Austria, Italy, and 



Sardinia ; also recorded from Siberia and the Argentine. 



We have compared our specimens with examples kindly 



sent to us by Dr Schaffer from Hamburg. Some palish 



markings are distinctly visible on both sets. 



Local data. — Newbattle Terrace, Edinburgh, Aug. 1898 and June 1899, 

 fairly common under flower-pots in an old greenhouse. 



Sminthurus igniceps, Reut. 

 [Plate VI. Figs. 20-23.] 



This form also is an inhabitant of greenhouses in the 

 suburbs of Edinburgh. It may not be indigenous to the 

 district, but this is a point on which we are scarcely prepared 

 to offer an opinion. 



S. igniceps was described by Eeuter (10&) in 1878, from 

 specimens got in orangeries in Helsingfors, Finland; and it has 

 since been obtained in hothouses in Germany, ISTorway, and 

 Sweden. It is closely allied to S. niger, but may be separated 

 from that at a glance by its bright yellow head and antennse, 

 pale legs, and more uniform velvety-black colour of the 

 body. Schott (13) describes the margin of the mucro as 

 either quite plain or very faintly denticulate. In all our 

 specimens denticulation, though slight compared with that 

 in S. niger, is quite perceptible (see Fig. 23). 



Local data. — Morningside Park and Newbattle Terrace, Edinburgh, May 

 and June 1899, fairly common under and about flower-pots in greenhouses. 



Sminthurus malmgrenii, Tullb., var. elegantulus, Reut. 



[Plate V. Fig. 3 ; Plate VII. Figs. 5-8.] 



This is another minute, but none the less beautiful northern 

 Sminthurid which it gives us much pleasure to be able to 



