" Die Europdischen Tori/miden." 337 



femora of the same sex, and by the pale ring of the stigma 

 of the fore wings. 



Dr. Mayr observes that this species is very nearly allied 

 to M. dorsalis, and especially to the var. xantliopygus, and 

 that it is distinguished by the larger size, by the last dark 

 abdominal segment of the male and by the ring on the 

 stigma of the forewing. Small females are often difficult to 

 distinguish from large females of M. dorsalis, and one 

 female appeared from the gall of Andricus noduli or from 

 that of A. testaceipes with the pale ring on the stigma, 

 which is the character of 31. stigmaticans. He believes 

 that the large specimens of M. dorsalis are parasites of the 

 gall-makers when the latter are larger in comparison with 

 the lodgers {ex. G. lignieola), but observes that the question 

 is still undecided when the size of the gall-maker does not 

 differ from that of the lodger. 



3. Megastigmus dorsalis, Fabr. 



= Bohemanni, Eatz., = xanthopygiis, Foerst. 



From galls of Dryophanta macroptera, Cynips Kollari, C. 

 caput-medusce, C. lignieola, C. conglomerata, C. glutinosa, C. 

 coriaria, G. polycera, Aphilothrix lueida, A. gemma), Syno- 

 phrus politics, Andricus noduli, A. injlator, A. terminalis, A. 

 multipilieatiis, A. Gydonice, A. singularis, A. Grossidarice and 

 Spatheg aster glandiformis. 



4. Megastigmus collaris. Boh. 



= transversus, Walk., = punctum, Foerst., = vexillum, 

 Eatz., = flavus, Foerst. 



Parasitic on Trypeta continua. 



5. Megastigmus pictus, Foerst. 



= strobilobius, Eatz. 



Probably parasitic on Tortrix strohilana. I believe that 

 I have found it occasionally in the pine woods near Inter- 

 lacken, in Switzerland. 



6. Megastigmus bipunctatus, Boh. 



= ? erythrothorax, Nees, = ? brevicaudis, Eatz. 

 Parasitic on Ti7iea Epilobiella and on Hypsolophus margi- 

 7iellus. 



