298 THE ENTOMOLOGIST. 



bordering tissue is inverted in the gall, or that that portion of 

 the rib which joins the midrib remains unaltered, and only 

 the outer portion becon)es employed in its formation. It thus 

 happens that the outer half of the gall lies at the edge of the 

 leaf (as is generally the case with the galls of Andricus 

 curvator). The gall occurs as a small ball at the end of this 

 side-rib, or if, perhaps, composed of leaf parenchyma as a 

 small lobe; sometimes the leaf margin shows as a seam on 

 the periphery of the gall. The gall itself is, like that of 

 ^. 5^/f6rtrw///, translucent, green, and covered, but not thickly, 

 with very short branched hairs like the leaf. When the gall 

 comprises the whole side-rib the leaf generally becomes 

 curled up on that side. The section exhibits a soft parenchyma, 

 with a cavity in the centre, in which the larva lives. The 

 gall-fly appears at the middle of June. — G. L. Mayr, 



This is a Turkey-oak species, consequently it does not 

 occur in Britain. Dr. Mayr mentions Sjjtieryus f/iatnnncera 

 and Callimome incerius as inquiline and parasite, both 

 appearing at the end of .Tune or beginning of July. Both 

 these insects are curiously inconstant in their life-history: 

 that of Callimome has been referred to (Entom. x. 208), and 

 Syiieryus lltaumacera, Dalm. (= Klugi, H. = luteiis, U. = 

 cariiKtfus, H.) is said to live in five widely separated Turkey- 

 oak galls and three common oak species ; also in some cases 

 it appears in the summer of the first year, whilst in others 

 it winters in the gall, and is not disclosed till the next April. 

 — E. A. Fitch. 



76. Aphilotlirix niargiiialls, Schlechtendal. — Under this 

 name Herr v. Schlechtendal has described a gall which, 

 according to his account, is to be found at the end of Ajnil 

 or beginning of May, and becomes mature by the beginning 

 of June. The typical specimens now before me are on the 

 leaves of Quercus sessilijlora, and grown through the leaf 

 surface, some starting from the midrib, others from a side- 

 rib. The galls are almost oviform, '2 to 3'G millimetres long 

 bv 2 to 2'5 millimetres thick ; in the dried stale greenish 

 yellow or brown (when fresh — on the authority of the 

 describer — light green streaked with red), and more or less 

 deeply ribbed longitudinally; the parenchyma of the gall is 

 rather thin, and the chamber large. One example, which 

 occurs on the midrib and is remarkable for its deep ribs, so 



