17-2 



THE ENTOMOLOGIST. 



Fis. r,4. 



rather hard, bare, somewhat shining ; at first (July and August) 

 of a yellowish white, which changes later on to a yellowish 

 brown, and often slightly rosy. This gall difiers from the 

 preceding species in having two cavities in the interior, one 

 placed above the other, the lower of which contains the larva, 

 and is only confined at the base by a thin wall ; the small, 

 upper cavity, however, is surrounded with a thick and loose 

 layer of gall-substance, and separated from the larva-cell by 

 a thin cellular diaphragm. The gall-fly is developed late in 

 the autumn; and, according to Von Schlechtendal, leaves the 

 gall in October and November; while Schenck gives spring 

 as its flight-time.— C. L. Maijr. 



54. Dnjopltanta corn if ex, Hart. 

 — This horn-shaped gall appears in 

 June on the under side of the leaves 

 of Quercus pubescens. It is at first 

 green, but becomesyellowish brown, 

 often with a reddish tinge; it is 

 shining and moderately hard, and 

 on an average attains to one milli- 

 metre in length by two millimetres 

 in diameter; its base is situated in 

 a cup, of from two and a half to 

 three millimetres in diameter, the 

 margin of which is angular, with a 

 more or less depressed centre. It 

 adheres to the rib of the leaf in 

 such a manner that the point of 

 attachment is not visible from the 

 upper side. The gall is sometimes 

 a little narrowed below the middle. In rare cases it has a 

 small lateral strobile or cone, and is also conical at the top. 

 Interiorly the gall contains a vertically-placed larva-cell, 

 without an inner gall. P>om galls collected in October, 

 and kept in a room, the flies emerged in November and 

 December, but they require to be kept rather moist. — 

 G. L. Maijr. 



This species is Hartig's Cynips carnifex, Koll.ar (Germ. 

 Zeit. iv. 406). One specimen of Syuergus pallicoruis was 

 bred by Tschek, as recorded by Mayr. The gall does not 

 occur in Britain. — E. A. Filch. 



D. cor.xirEX (and in sectiou). 



