A BRACONID PARASITE ON THE PINE WEEVIL. 147 



were obtained is a bleak hillside near the coast and over 300 

 feet above sea-level. It is often swept by cold north and 

 east winds. 



Another interesting fact is that B. hylobii attacks the weevil 

 larva in its resting stage, at a time when the latter is practically 

 inactive. 



Since the above paper was written I have been enabled to renew 

 my investigations and experiments on Bracon hylobii. Both 

 laboratory and field experiments are now in progress, and until 

 these are completed and their results ready for publication it 

 would be inadvisable to make any further statements. I may 

 say, however, that so far as observations go they confirm those 

 given above. B. hylobii has now been found in several widely 

 separated areas. 



Much still remains to be done before the relations of Bracon 

 hylobii and the weevil are fully understood, and especially before 

 the practical value of this parasite as a check on Hylobius on a 

 large scale can be fully demonstrated. 



24. A New Species of Larch. 



( With Plate) 



The following description of a new species of larch, by 

 Prof. Augustine Henry, is taken from the Gardeners^ Chronicle, 

 27th February 1915, p. 109: — 



In the Kew herbarium there are two or three twigs with 

 leaves and cones of a peculiar larch, gathered in i860 by 

 Maximowicz on the shores of Olga Bay, about 120 miles 

 north-east of Vladivostock, in the maritime province of Eastern 

 Siberia. This larch was labelled Larix sibirica by Maximowicz ; 

 but is remarkably distinct, having different branchlets, leaves 

 and cones, and, moreover, it occupies an isolated district far 

 removed from the region inhabited by the well-known Siberian 

 larch. It is readily distinguishable from all the species hitherto 

 published, and will now be described (Plate XIV. Fig. i) as a 

 new species, Larix olgensis} 



^ Larix olgensis, A. Henry, sp. nova. Larix sibirica, Maximowicz, ex 

 M.S. inherbario (non Ledebour) ; Masters, m /ourn. Linn. Soc. {Bol.), xviii. , 

 523 (ex parte) ; Komarov, F. Manskuriae, i. , 194 (1901) ; Patschke, in Engler, 

 Bot. Jahrb., xlviii., 602 (19 1 3). 



