1918.] 181 



The agamous form, however, is very different from T. renum (the 

 agamous form of megaptera), and is known from Sweden,' Germany, 

 Austria, Italy, Portugal, and Asia Minoi', or, according to Houard, 

 throughout Europe excepting Spain. The gall is of the same type as 

 that of Dryophanta folii and other species of that genus, closely 

 resembling folii, but appreciably^ smaller (5-7 mm., as compared with 

 10-20 mm., in diam.) and with the surface alwa3^s smooth (see Houard, 

 1321, figs. 447 & 448. 



Hah. Durham, Team Valley {J. W. R. II.), Fatfield and Gibside 



10. — DiploJepis quercus Fourc. (^=-Dryoplianta piihescentis Mayr). 



Diplolepis quercus Fourcroy, Ent. Paris, p. 391 (1785) ; Dalla 

 Torre & Kieft'er, Cj^iipidae in "Das Tierreich," xxiv, p. 351 (1910). 



This is the Dryophanta puhescentis of Mayr, Kieffer, and Houard, 

 whilst it was redescribed under the name DryopJianta ilicis by Kieffer 

 in 1S96. 



The gall is of the agamous generation and of the same type as that 

 of D. folii, from 8-10 mm. in diameter, with the surface dull yellowish- 

 brown, usually ornamented with minute flat warts, but sometimes quite 

 smooth. 



This form is so like D. folii that we hesitated to bring D. quercus 

 forward when we discovered it a few years ago. The discovery of the 

 very distinctive gall of the sexual generation, however, now enables us 

 to make this record. 



Hab. Co. Durham, from the Derwent Yalley in the autumn of 

 1914, Winlaton, July 1918 {B. S. B.). 



Recorded from Italy, Sicily, Southern France, Spain, Portugal, 

 North Africa, Lower Austria, Hungary, Bulgaria, Montenegro, and 

 Asia by Dalla Torre & Kieffer, whilst Houard says it occurs throughout 

 Europe, excepting Norway. 



11. — Diplolepis fosculi Giraud. 



Spatliegaster Jlosculi Giraud in Ann. Soc. Ent. France, ser. 4, viii, 

 Bull. p. 54 (1868) ; D. quercus Sex. gen., Dalla Torre & Kieffer, 

 Cynipidae in ''Das Tierreich," xxiv, p. 351 (1910). 



This is the sexual generation of D. quercus and is the same species 

 as the Spatliegaster giraud i Tschek (1869). 



The gall is very characteristic in its pilosity and colour, and is 



