Collembola and Thysanura of the Edinhurgh District. 229 



Finland to Bohemia and Sardinia, and it is also recorded 

 from Siberia, California, and La Plata. It appears to us 

 very probable that this is the S. liLpulinoe of Bourlet. 



Local data. — Rosslyn (Midlothian), June, abundant on grass, clover, etc., 

 on moist spots on the banks of the Esk below the chapel ; near Midcalder, 

 common on grass at the side of a ditch, July; Inverkeithing (Fife), on banks 

 of a stream, July ; Tynehead (Midlothian) and Longniddry (E. Lothian) on 

 Lotus major, etc., Aug.; Parkly (Linlithgow), common on Vicia cracca, 

 Aug. ; etc. 



Sminthurus quadrilineatus, Tullb. 



? Sminthurus Bourletii, Lubbock's "Monograph." 



[Plate VI. Figs. 16-19.] 



The typical striped form of this species occurs sparingly 

 upon pieces of dead branches lying on the ground in a grass 

 field on the farm of Lawhead, parish of Midcalder. Along 

 with it, but much more plentiful, is a dark sooty-coloured 

 form, structurally identical, and evidently the variety 

 ochropus of Eeuter. Superficially this latter form bears a 

 strong resemblance to S. niger on the one hand and >S^. 

 igniceps on the other — the pale yellowish legs, yellowish 

 colour of the first and second antennal segments, and usually 

 of the forehead and crown as well, being suggestive of an 

 intermediate form. The structure of the mucro, however, 

 which has perfectly plain margins in all the specimens we 

 have examined, at once distinguishes it from niger, and 

 indicates a very close relationship to igniceps, from which, 

 nevertheless, it differs appreciably in the form of the feet 

 and mucro. The habitats too are different. Some examples, 

 which we propose to designate var. flamscens, are entirely of 

 a brownish-yellow colour. 



The identity of Lubbock's 8. hourhtii, from Kent, with the 

 present species seems to us highly probable. Judging by 

 the figure of the antenna of Lubbock's insect, given in the 

 Transactions of the Linncean Society, vol. 26, they agree 

 exactly as regards this organ ; and the " very finely serrated " 

 inner margin of the mucro, spoken of in the description of 

 lonrletii, is not inconsistent with their identity, for Dr 



