FAMILY BOSTRYCHIDAE 



'57 



the Scots pine ; but in 

 the latter case the in- 

 sect is not a wood- 

 borer in any stage of 

 its existence. I shall 

 show later that the sal 

 scolytid Sphaerotrypcs 

 siwalikcnsis of the Si- 

 walik sal areas also 

 tunnels into green sal 

 shoots to feed, as does 

 the Assam species ; but 

 I have found no re- 

 corded instance of a 

 bostrychid acting in 

 this manner. It was in 

 February 1902 that Mr. 

 Littlewood made this 

 discovery, and between 

 1905 and 1909 I was 

 able on several occa- 

 sions to corroborate it. 

 To leave no opening for 

 doubt as to the iden- 

 tity of the species both 

 Mr. Littlewood's and 

 my own specimens were 

 kindly identified for me 

 by M. Lesne. 



As I have above 

 indicated, the length 

 of time taken by each 

 generation or life-cycle 

 of the beetles to ma- 

 ture, and the number 

 of such, necessarily 

 vary with the part of 

 the country the insect 

 is inhabiting. They 

 will be more numerous 

 in the damp tropical 

 heatof Tenasserim than 

 in Changa Manga in 

 the Punjab. The num- 

 ber is probably from 



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