456 



The Enemies of the Wlieat Fly. 



from tLe female by its large eyes, placed very near each otLer, 

 witli reticulations unusually visible. I presume this to lay its eggs 

 in the larvae, but have not been able positively to ascertain the 

 fact* 



" This singular species has been characterised as the Genus Ma- 

 CROGLENES by Mr. Westwood, and I am happy in being able to 

 give drawings from nature of the sexes, as the figure in the Lin- 

 Lsean Transactions is not sufficiently correct to identify it.f Mr« 

 Westwood, how^ever, has examined Mr. Kirby's original specimen 

 of IchneumoTi penetrans, and informs me that it is identical with 

 his Genus Macroglents, which is comprised in the Family Chal- 

 ciDiDAE, a parasitic group of immense extent as to amount of 

 species, and scarcely yielding in numbers to any of the insect 

 tribes as to aggregate masses. I have already described and 

 figured several species of Chalcididce ; they frequently inhabit and 

 feed upon the parasitic larvae oi Hymenoptera, to keep them within 

 due bounds. 



Male. Female. 



" 3. Macroglenes penetrans. — The male is dark blue-green, some- 

 times slightly tinged with violet, shining; antennce not so long as 

 the head and thorax, geniculated and clavate, ten-jointed, basal 

 joint long ; second as stout, oval ; three following very minute and 

 saucer-shaped ; sixth and seventh stout, cup-shaped ; the remainder 

 forming a compact black ovate-conic club : head large and trans- 

 verse, face orbicular, including the eyes, which are very large, 

 lateral, reddish brown, orbicular, coarsely reticulated and ap- 

 proaching each other oa the crown, ocelli 3, forming a long 

 triangle, prominent and larger than usual, especially the apical 

 one : thorax oval, as broad as the head ; the sutures deep, forming 



* Trans. Linn. Soc, p. 10-1. 



f Mr. Haliday presented me with a male; for the loan of the other sex 

 I am indebted to Mr. F. Walker. 



