SYNERGUS FACIALIS. 69 



fuscated. Still I have reared from Dryojphanta divisa 

 galls examples of TscheM which have the antennae and 

 tibiae inf uscated. A further noteworthy difference lies 

 in Tschehi issuing from the galls in the autumn, while 

 tristis emerges in the spring. 



Mr. Bignell and myself have bred it from Neuroterus 

 ostreus in the spring, and Mayr from Andricus urnse- 

 formis. 



Not common, seemingly. 



Austria. 



10. Synergus vulgaris. 



Synergus vulgaris, Htg., Germs. Zeits., ii, 198 ; Mayr, Verh. 

 z.-b. Ges. Wien, xxii, 715. 



Black ; the antennae and legs reddish-testaceous, the first joint of 

 the antennae more or less infuscated ; the apical joints more or less 

 fuscous ; the coxae, the base of the four front femora, and the greater 

 part of the posterior femora blackish; alar nervures pallid fuscous. 

 Vertex and front coarsely punctured ; frontal lamina clearly defined ; 

 facial keel moderately distinct. Mesonotum coarsely transversely 

 rugulose. Second antennal joint a little longer than broad. 



The <$ has the head rufo-testaceous, except the front, vertex, and 

 occiput ; the antennae are entirely rufo-testaceous, with sometimes the 

 basal joint more or less infuscated ; the third joint acutely bent in the 

 centre ; the legs are not so much infuscated. 



Length 2 — 3 mm. 



A species not difficult to recognise. I have it from 

 the galls of Andricus callidoma. On the Continent it 

 is known from the galls of Cynips tinctoria, G. lignicola, 

 G. glutinosa, G. caput-medusse, G. calicis, Andricus 

 gemmae, A. solitaria, A. Glementinse, A. urnseformis, A. 

 glandium. It issues in March in the house. 



Clydesdale. 



Germany, Austria. 



11. Synergus facialis. 

 PL XII, fig. 1. 



Synergus facialis, Htg., Germs. Zeits., ii, 199 ; Mayr, Yerh. 

 z.-b. Ges. Wien, xxii, 717, 19. 

 — bispinus, Htg., 1. c, iii, 349. 



