232 SOME ADDITIONS, ETC, TO THE COLEOPTEEA 



1 1 603. Olibrus ceneus, F. 



"Rare. By sweeping near Gilsland " (N. H. 

 Trans., p. 58). 



Winlaton Mill, 1902. 



1656. Mycetcea hiria, Marsh. 

 Cellar, Winlaton. 



*i662. Trip lax russica, L. 



This species, as will be seen in another note, was 

 erroneously identified, and proved to be T. bicolor, 

 Gyll., an insect hitherto unknown to the fauna of 

 Great Britain. 



1663. T. cenea, Schal. 



" Triplax cenea, Schal,, and T. russica, L., at 

 Gibside : — Early in the morning (about 5.30 a.m.) 

 of July 8th, 1904, I found Triplax miea, Schal., in 

 some fungi growing on elm in Gibside. Returning 

 with my friend, Mr. H. S. Wallace, on the evening of 

 the 22nd, we shook some more fungi, and besides 

 turning out several T. cenea, were lucky enough to 

 come across T russica, L., an insect hitherto un- 

 recorded from the Northumberland and Durham 

 district. On Saturday, the 23rd, I examined this 

 part of Gibside more closely, and soon found an elm 

 overgrown with fungi to a height of over twenty feet, 

 and not far from it a holly also overgrown ; and made 

 some observations which may prove interesting. 



T. cenea and T. russica occurred in almost equal 

 numbers at the foot of the tree, whilst from a height 

 of over four feet T. cenea had the advantage in 

 numbers, and at a height of over eight feet there 

 were scarcely three examples of T. ?-ussica to fifty 

 T cenea ! What is the reason ? 



I found several freshly emerged T. russica in the 

 fungus stems, but no pupae rewarded me, search as I 

 would, though larvae (I should imagine of T. russica) 

 were legion. 



