DESCRIPTIONS OF OAK-GALLS. 67 



middle of its anterior margin ; the apical joint black ; the 

 intermediate tarsi white, with the extreme apex of each joint 

 black ; the posterior tibiaj clavate, with their extreme base, 

 as well as the spines at their apex, pale testaceous. Abdomen 

 subclavate. 



Female. — The size of the male, but more robust; the 

 clypeus, with the anterior margin, widely and slightly emar- 

 ginate, with four minute teeth in the emargination, the two 

 central ones more prominent than the lateral ones ; the 

 clypeus covered with silvery pubescence ; the mandibles have 

 a pale yellow line, with their apex rufo-piceous; the anterior 

 tibiae yellow in front, and the intermediate ones fuscous at 

 their base and apex ; the posterior coxae pale testaceous at 

 their apex; the tibiae subclavate, and pale yellow at their 

 base ; the tarsi whitish at the base. Abdomen oblong-ovate, 

 the apex rufo-fuscous. 



Odynerus reniformis, Gmelin 

 Another fine addition to the British Aculeata has been 

 made by the discovery of a species of wasp, new to our 

 insect fauna, the Odynerus reniformis. This insect was 

 discovered by Mr. Edward Saunders, near Chobhara, Surrey. 

 The male only has been taken : it bears a close general 

 resemblance to Odynerus Icevipes, which species was dis- 

 covered some years ago, within a few miles of Chobham, 

 burrowing in bramble sticks. The new species may possibly 

 have the same habit. The male of O. reniformis is distin- 

 guishable from all the other males of our British species, by 

 having a long yellow spine on each intermediate coxa. 

 Henich-Schafier has described this species under the name 

 of Pterochilus coxalis. The female is said to resemble that 

 of Odynerus spinipes. 



27, Eichmond Crescent, Barnsbuiy, 

 February, 1877. 



DESCRIPTIONS OF OAK-GALLS. 



Translated from Dr. G. L. Mayr's ' Die Mitteleuropaischen Eichengallen. 



By Edward A. Fitch. 



(Continued from vol. ix. p. 269.) 

 62. Neuroterus numismatisy 01. (N. Reaumuri, //.). — This 

 most beautiful of all the lenticular galls {Linsenyallen) 



