HYMENOPTEROUS PARASITES. igQl 



atus, and should now be considered synonymous with this last rather than 

 a variety of congregatus, as I was inclined to place it prior to the study of 

 glomeratus. 



Apanteles congregatus (Say). 



Parasitic on various Sphingidae. 



This species, as I have shown, (op. cit.) is extremely variable, having 

 several entomophagic varieties which most authors would perhaps look 

 upon as good species. It has not been reared from any of the Rhopa- 

 locera and is referred to here because of its close relationship to glom- 

 eratus ; from which in its more typical form, it may be distinguished by 

 the folloveing characters : 



More generally hairy. Face less polished, densely punctate and in place of the di. 

 verging carinae, a small, polished tubercle near and between the bases of antennae 

 and sometimes a faint indication of a median carina. Mesoscutum less polished, rather 

 densely punctate and more pubescent; metascutellum -with the lateral and posterior 

 carinae more sharply defined and a median carina more often indicated. Legs more 

 often concolorous and rarely with tips of femora and of tibiae dusky and still more 

 rarely black. Wings with a rather darker tinge. 



2. Apanteles edwardsii n. sp. 



Parasitic on Vanessa atalanta. 



Average length, 2.6 mm. ? : Color black. Legs pale yellowish-brown. Pilosity 

 sparse and white. Head : face with a more or less distinct carina ; antennae piccous ; 

 palpi very liglit yellow. Thorax: metascutellum without carina but with posterior 

 angles and slight elevation at middle of hind border rather distinct and polished ; scu- 

 tellum sparsely punctate and not more polished than the rest of thorax ; tegulae light 

 honey-yellow: wings normal, stigma and costa piceous, veins paler; radial vein an- 

 gulated a little beyond middle : legs with all coxae and all trochanters honey-yellow ; 

 front and middle femora, tibiae and tarsi honey -yellow ; hind femora honey-yellow, 

 dusky at tip ; hind tibiae honey-yellow, nearly black at tip ; hind tarsi brownish. Ab- 

 domen: joint 1 -nith a longitudinal oval median fovea not extending to joint 2; joint 

 1 narrow, emarginate behind, side pieces piceous-brown ; joint 2 transverse, broader 

 than 1 and thrice as broad as long, the hind wider than anterior border ; both I and 2 

 strongly punctate, 3 but slightly so at anterior border; ovipositor exserted, very long, 

 extending more than the whole length of the abdomen, and yellowish-brown. 



Approaches closely A. cacoeciae (Riley). 



The cocoons are elongate, dense, pure white or varying to a dingy 

 white, with scarcely any loose silk. The species has only been bred from 

 young larvae. 



Described from four females reared from atalanta by :Mr. William H. 



Edwards. 



