116 [May, 



species included Phryganea ohsoleta ; Limnophilns luridus, auricula, 

 centralis, vittatus, grise.us and sparsus ; Stenophylax stellatus ; Tiepi- 

 dostoma hirtum ; Crunoecia irrorata ; Sericostoina personatum ; Odonfo- 

 cerum albicorne ; Leptocerus aierrimus : Oecetis ochracea ; Mystacides 

 azurea ; Hydropsyche instabilis, R. pellucidida, ; Polycentropus flavi'- 

 maculatus ; Philopotamus montanus ; Tinodes waeneri ; and /rydropfila 

 femoralis. An example of 8. stellatus was taken by Evans at about 

 2000 feet. 



13, Blackford Eoad, 



Edinbiirgh : 



March, 1916. 



A note on the habits of Dorytotnustortrix L. and D. dejeani Faust (cosiirostris 

 Gyll.). — Whilst searching (in vain I am sorry to say) for the larvae of Dorytomus 

 dejeani and D. tortrix on aspens (Populus tremula) in a garden at Yelverton, 

 S. Devon, in June, 1914, and also whilst experimenting to induce the species to 

 breed (also unsuccessfully), I observed one or two points in their behaviour 

 which seem worthy of a summary record. 



To begin with, it must be stated that D. dejeani is a pitchy brown weevil 

 (Plate I, fig. c) with a feeble mottling of pale yellowish pubescence, whilst 

 tortrix (Plate I, figs, b, b) is brownish yellow in colour. D. dejeani is just the 

 colour of the damp dark earth of the garden ; D. tortrix is nearly identical in 

 colouring with that of the husks or sheaths of the leaf buds of the tree. The 

 species occur together and are gregarious. 



Summary. 



1 . About the middle of August, 1914, the attempts to breed the two species 

 in muslin sleeves on separate boughs had failed: decided to release the 

 beetles, as all the free-living individuals on the tree had already departed : 

 concluded the insects would not breed until the following spring. Found 

 D. dejeani in its cage quite lively, the specimens walking on my hand whilst 

 being liberated. D. tortrix not to be seen : eventually discovered them apparently 

 all dead in the bottom of their sleeve, mixed with old husks of leaf buds, &c. : 

 held them and the debris in my hand for some time : was struck by the great 

 resemblance of the beetles to the old leaf buds (Plate I, figs, a, a, a) : wondered 

 why they had died : then one of them moved .- bottled the lot and put them in 

 my pocket : soon afterwards all the beetles were quite actively walking about. 



2. In September, 1914, cut a tiu"f at base of aspen and shook it over a 

 sheet : almost instantly D. dejeaiii was actively walking abovit : bottled as many 

 as required ; again noted tortrix shamming death, but after a while secured as 

 many as were desired. Old leaf buds conspicuously present. 



