1913] 
Girault: Ghalcidoid Family Trichogrammatidae 
155 
tion of Trichogramma. Thus Westwood himself does not give 
up the original perception of Trichogramma, and later (Westwood, 
1879) he is the one to point out that that genus and Calleptiles 
Haliday are distinct things. 
During the next decade not very much was learned concerning 
the family, though Walker (1843-1846), Haliday (1842-1843) 
and Stoll werck (1848) wrote about the several existing species 
of the group, the latter concerning the life-history of a species 
representing a new genus made known several years later by 
Arnold Foerster (1851). Stollwerck’s paper was important, how- 
ever, as it made known for the first time the habits of one of the 
species of the family, foreshadowing the economic relations of the 
whole group. Haliday (1842) first figured Walker’s Trichogramma 
evanescens Westwood ( = Calleptiles latipennis Haliday), giving a fig- 
ure of the whole insect with enlarged details of the wings, antennae 
and tarsi; this figure is known to have been drawn by Haliday 
which is a strong reason for believing the Walkerian and Haliday an 
species the same; that is, that Walker’s Trichogramma evanescens 
Westwood and Haliday’ s Calleptiles latipennis are the same thing, 
considered as such by both Walker and Haliday, both having the 
original conception of Calleptiles in mind, yet calling the species 
Trichogramma evanescens Westwood. In 1843 Walker described 
Trichogramma carina Walker; this species I shall place in Callep- 
* tiles Haliday because of internal evidence — because Walker’s con- 
ception of Trichogramma was that of Haliday’s Calleptiles and be- 
cause it agrees more with that genus than any other; a ring-joint 
was probably overlooked in the antennae. In 1846 Walker listed 
Trichogramma evanescens Westwood with the Eulophidae, giving 
Calleptiles latipennis Haliday and Pteroptrix evanescens Walker as 
synonyms. This was in a list of the hymenopterous insects in the 
British Museum and as the specimens of evanescens so-called were 
presented to the museum by Walker, it seems evident here that 
Calleptiles latipennis Haliday was meant, as formerly. In the 
meantime, Haliday (1843) in attempting a classification of the 
old family Chalcididae places Trichogramma Westwood in a group 
to itself, characterized by having 3-jointed tarsi, listing Tricho- 
gramma' evanescens Westwood and omitting mention of any others 
as synonyms. In 1849, Stollwerck mentioned the discovery of 
Poropoea stollwerckii Foerster, but did not mention its name until 
later. 
