OF WASHINGTON. 361 



advanced to determine that point ; I am trying to rear them, and 

 if I succeed I will make it known through the pages of The 

 Zoologist. The Chalcis is a very beautiful one and appears to 

 retain its colors after death ; the insect is a female ; the male I 

 have not been able to meet with, and if the males are as rare as 

 those of our Callimome devonicnsis, it is not very likely I shall 

 be able to see them. The insect belongs to the genus Megastig- 

 mus of Dalman ; there are but few species belonging to the genus 

 known. I therefore consider this a very interesting addition, and 

 as it appears to be generally attached to the Pinus family, I shall 

 call it Megastigntus pintts" 



Dr. Gustav Mayr in his " Die europaischen Torymiden," 

 Vienna, 1874, records the following respecting the habits of the 

 European species of Megastigmus : 



(1) M. synophri Mayr. .. .Bred from the Cynipid gall Syno- 



phru* politus. 



(2) M. stigmaticans Fabr.(= stigma Nees. and giganteus 



Walk.) reared from Cynipid galls : 

 Aphilothrix lucida* Cynips ar- 

 gentea, C. calicis, C. caput-me- 

 dusce, C. glutinosa and C. kol- 

 lari. 



(3) M. dorsalis Fabr (= Bohemani Ratz. and xanthopy- 



gus Foerst.) reared from Cynips 

 galls : Andricus inflator, A. 

 noduli, A. singular is, A. termi- 

 nalis, A. multiplicatus* A. cy- 

 donice, A. grossularice, Apkilo- 

 thrix gemmce, A. lucida, Dryo- 

 phania macropteba, Cynips ca- 

 put-medusce, C. conglomerata, 

 C. coriaria, C. glutinosa var. 

 coronata, C. lignicola, C. poly- 

 cera, Spathegaster glandiformis 

 and Synophrus politus. 



(4) M. collar is Boh (= transversus Walk., = punctum 



Foerst., vex ilium Ratz., =Jlavus 

 Foerst.) reared from Trypeta, 

 continua Meig. infesting Rose 

 fruit. 



(5) M. pictus Forst (= strobilobius Ratz.) reared from 



the cones of Abies excelsa. Mayr 

 further remarks that these cones 

 were probably infested with the 

 larvae of Tortrix strobilana. 



