COLEOPTERA SCOLYTID.^:. 



117 



Chypiialus tille, Panz. 



This species confines its attacks to dead or dying branches of the 

 lime, and is said to be extremely local. I am indebted to Mr Morse, 

 Leeds, for the specimen as represented by 

 photograph in figs. 110 and 111. He found 

 it at ]N"ewnham, Gloucestershire, in May 1906. 

 The mother-gallery is horizontal, and may be 

 either single- or double-armed. The bark, at 

 the selected i)ortion of the branch, is exceed- 

 ingly thin, and the female beetle bores just 

 deep enough to skim the surface of the wood. 

 The larval galleries run at right angles to the 

 mother -gallery, but owing to the thinness of 

 the bark, and the peculiar structure under- 

 lying the thin covering, it is with great 

 difficulty that a specimen may be prepared 

 for illustration. 



All German writers say there is a double 

 generation. 



The beetle is small in size, oval, and 

 circular if considered in section through the 

 body, pitchy brown, with reddish-brown antennge and legs, 

 broader than long, with small protuberances on the sides, 

 with very finely punctured striae, but the gen- 

 eral appearance is rough and scaly. Length 

 1 to 1| mm. 



CllYPHALUS PlOEiE. 



I have not found this species. Fowler says 

 it is very rare. Barbey says it lives exclusive- 

 ly on the silver fir (Weisstanne), though at the 

 same time he gives two exceptions, one on the 

 root of spruce and the other on the larch. He 

 also adds that it is a very deadly enemy of silver fir when associated 

 with another beetle named T'omicus curvidens, Germ., and gives a 

 very interesting account of the injuries. It would be well, therefore, 

 for students in this group to keep a good look-out for this species 

 (hitherto considered rare), more especially in the south of England. 



Mini inr/f oj 

 Ciyphalusabietis. (From 

 AUuni.) 



Thorax 

 Elytra 



Fit;-. ICi'.— Cryplialus abietis. 

 (From B.iibey.) 



