32 8 Proceedings of the Royal Irish Academy. 



the northern regions to the Azores, the Argentine, and the Malayan Islands. 

 In Great Britain and Ireland it is widespread, though perhaps not quite 

 so abundant as Isotoma liridis. 



Tomocems minor (Lubbock). 



Macrotoma minor Lubbock (Trans. Linn. Soc, 1862). 



Macrotoma tridentifera Tullberg (Sveriges Podurider, 1872). 



Tomocems plumbeus Lubbock (Monograph, 1873). 



Abundant through the island : Croaghmore cliffs, 1,300 feet (A. "W. Stelfox, 

 July. 1911 ; Kill, under stones (July, 1911); wood at Capnagower (B.Welch, 

 June, 1910); northern and eastern cliffs (E. "W., 9th September, 1909); 

 Kinnacorra (July, 1911) : slope of Knocknaveen, beneath stones (July, 1911). 

 Also on mainland throughout the district ; Westport. Belclare, and Knappagh 

 (J. X. H.. July and August, 1911 : Achill (July, 1911, and H. W. Kew, 

 June, 1910); Curraun (B. F. Scharff, June, 1909). 



Another exceedingly common and widespread L'ish and British springtail. 

 Its foreign range is also extensive — Norway and Sweden : Russia and Finland : 

 Geimany, Heligoland, Bohemia, Switzerland, and the Azores; probably also 

 in Xorth and South America. 



Tomocems longicomis (Miiller). 



Podura longicomis Miiller (Prodr. ZooL Dan., 1" _ 



Tomocems longicomis Lubbock (Monograph. 1873). 



Tomocems plumb': us Carpenter and Evans (Proc. B. Phys. Soc. Edinb., 

 1S99). 



Like the preceding species, this is abundant throughout the island ; 

 Croaghmore cliffs, 1,300 feet (A. W. Stelfox. June, 1910, and July, 1911): 

 wood at Capnagower iB. Welch, June, 1910, and July, 1911) : north and east 

 cliffs (E. W., September, 1909); Kill, under stones (July, 1911). Also on 

 the mainland throughout the district: Wesfcport, Belclare, and Knappagh 

 J. N. Halbert, July and August, 1911) ; Achill H. W. Kew, June, 1910). 



Both in Ireland and Great Britain this species is common and widely 

 distributed ; abroad it has much the same distribution as T. minor, and is 

 known to inhabit also Siberia, ranging to 70 : N. lat. 



Entomobrya Nicoletii < Lubbock). 



Degeeria Nicoletii Lubbock (Trans. Linn Soc, 18 

 D. muscorum Lubbock (Monograph. l v_ 

 Clare Island (R Welch, June, 1910). 



This is a widespread insect in Ireland and Great Britain ; it ranges south- 

 wards and eastwards to Italy and Siberia 7'J : N. lat.). 



