DESCRIPTIONS OF OAK-GALLS. 235 



have found it in many localities, but nowhere abundant; and 

 it is not recorded from Scotland. Rev. T. A. Marshall, who 

 described it {teste Parfitt) as the production of N./'ui/n pen n is, 

 speaks of it as "exceedingly common near London" (E. M. 

 M. iv. 146): like S. baccariim it may occasionally be found 

 on the upper side of the leaf. As inquilines of this gall 

 Dr. Mayr gives Synergus albipes, H., S. facialis, H., and 

 S. thaumacera, Dalm., all appearing in June and July of the 

 first year. Of parasites Mr. Rothera has bred a Eiirytoma, 

 a Callimome, and a Pteromalus ; these all in July. — E. A. 

 Fitch. 



72. Spathegaster albipes, Schenck. — This small gall — rare 

 in the neighbourhood of Vienna, but common in Saxony and 

 Nassau — is somewhat similar to those of A. burgnndus, Gir., 

 and A. circulans, Mayr; it may be found immediately after 

 the appearance of the leaves of Q. sessilijiora, either at the 

 margin or on the midrib of the leaf: in the latter case the 

 leaf becomes crumpled, and is sinuate to the midrib; very 

 rarely it may be found on the petiole. It is greenish yellow, 

 subsequently yellow ; elongately oviform, with a longer axis 

 of 2 millimetres long by I broad, generally bordered with 

 little protuberances on the free side opposite the line of 

 attachment; its surface is hairy when immature, later on it is 

 mostly bald. With the help of a strong glass we may see the 

 rounded cells of the gall (which Prof. Schenck has described 

 as very small protuberances). The section shows that this 

 gall has only a thin cellular wall and a relatively large 

 chamber for the larva, which appears in the perfect state in 

 the middle of May. — G. L. Mayr. 



This gall, which is figured by Malpighi, has been recorded 

 as British by Mr. Cameron, who thus speaks of it: — "I find 

 it commonly around Glasgow. The very small size of the 

 gall renders it easy to be overlooked" (E. M. M. xiii. 200). 

 Schlechtendal says " this species is intermediate between 

 Andricus and Spathegaster, both as regards the structure 

 of the fly itself and of its gall;" and then remarks on the 

 similarity of its gall to that of A. curvaior. There might be 

 some evidence here for Mr. Bassett. Dr. Mayr received 

 Synergus apicalis, H., as bred by Schenck, from this gall; 

 but he thinks it more probable they were connected with 

 Noduli galls. — E. A. Fitch. 



