BY WALTER W. FROGGATT. 697 



Family SIEICID^. 



Only one species of this small family of Hymenoptera has been 

 described from Australia ; they are found in all parts of the world, 

 but I do not think that they will turn out to be very numerous 



in this country. 



Sub-Family SIRICINtE. 



9. SIREX. 

 Sirex, Linn. Faun. Suec. p. 396 (1761). 



AUSTRALis, Kirby, Brit. Mus. Cat. p. 383, pi. xv. fig. 12 (1882). 

 Australia. 



Family CYNIPIDJE. 



I can not find any species of this family described from Australia, 

 but there are at least six species in the Macleay collection, several 

 of which I have bred out of galls during the last summer. One 

 forms three-pronged galls about the size of a large pea, on the 

 twigs of Acacia discolor growing in the neighbourhood of Sydney, 

 which are full grown about the end of October, but the galls are 

 so aborted by a small black chalcid that not more than 1 in 50 at 

 that time contain the original maker. Another species forms 

 large oval galls on the young stems of Acacia loncjifolia, hatching 

 out in the early part of December. On the twigs of several species 

 of Eucalypts a third species forms three-pronged galls which are 

 placed in rows on either side of the twig. Systematic collecting 

 and breeding from galls will no doubt bring many more species 

 under our notice. 



Family CHALCIDID^. 



Over 150 species of this extensive family have been described 

 from this country, chiefly by Walker, Westwood, and Kirby, most 

 of the larger foreign genera having their representatives here. 

 As nothing has been done towards the classification of several of 

 the sub-families containing the majority of the minute insects 

 since Walker's time, the compiler has had to use his classification 

 in the following list. , 



