4 THE ENTOMOLOGIST. 



against each other (as is also the case in Cynips Ter- 

 ricola), forming altogether a brown mass, on the extreme 

 of which the outline of each separate gall is readily to be 

 perceived. When recent this gall is said to be succulent, but 

 when dry its section exhibits a reddish mass of cells, divided 

 from each other by their septa. Harting states these galls 

 have but one cell, but on investigation I find that the smaller 

 or pea-sized specimens possess from one to three cells, and 

 the larger or cherry-sized galls from three to five, or in some 

 instances as many as nine ; these larger cells are oval, 

 measurrng seven millemetres in their longest, by six mille- 

 metres in their shortest, diameter, and are enclosed in a pale 

 yellow, softish, thinly-walled capsule, which is throughout 

 firmly united with the substance of the gall. — G. L. Mayr. 



The existence of Biorhiza aptera, whose gall has been often 

 found on the roots of oak-trees in the south of England, is 

 liable to be shortened by the introduction of the germ of a 

 new life within it, as it is not secure from Calliraome Roboris, 

 one of the gorgeous Chalcidiae, or metallic-coloured flies, of 

 which much must be said afterwards. — Francis Walker. 



Notes on the Oxyura. — Family 2. Scelionid(0. 

 By Francis Walker, Esq. 



Tei,enomds bkachialis. 



