1913] 
Girault: Chalcidoid Family Trichogrammatidae 
171 
species (Ashmead, 1894-1895). Their correct position has been 
ascertained. 
In 1889 Howard described Trichogramma intermedium and gave 
a diagnosis of the genus as follows : 
“Genus Trichogramma Westwood. 
Tarsi 3-jointed; front wings with regular rows of hairs, submarginal 
vein reaches costa, and, with marginal and stigmal, forms a regular arch; 
antennae 8-jointed — scape, pediceal, ring-joint, funicle (2), club (3) — ; 
ring-joint very minute; funicle joints in female small and subequal in length 
and width; club large, obliquely truncate at tip. In the male the funicle 
joints are much larger and the club is of same width, tapering gradually to 
rounded tip.” 
The species intermedium is figured, showing a typical Tricho- 
gramma with the usual solid club; it was reared from butterfly 
eggs. From this diagnosis of the genus it may be inferred that 
the American entomologists were also largely confused by pre- 
conceiving the antennal club as necessarily 3-jointed, and while the 
genus was described as bearing such an antenna the species included 
within it actually, at least as far as we are able to learn from the 
literature, bore solid antennal clubs. 
Ashmead in the fifth year following, described Brachysticha 
fidiae from the eggs of a coleopteron and remarked, following the 
description, that perhaps his Trichogramma acuminatum should 
be removed to this genus also, as it agreed closely with the species 
fidiae. The latter species belongs to Lathromeris Foerster; I have 
seen specimens of it. In 1895 Dyar without explanation gives 
Trichogramma minutissimum Packard as a synonym of T. pre- 
tiosa Riley. In 1898 h, Howard described a new genus and species, 
Paracentrohia , from the island of Grenada; it was based on the 
species punctata , a single female specimen captured on a window. 
A careful comparison of this description with Chaetostricha Haliday 
leads to the belief that the two genera are the same and Para- 
centrobia is considered as a synonym of the Halidayan genus, 
described so many years previously. In the same year, Howard 
(1898 a) described Lathromeris cicadae which I have later rede- 
scribed from the types. 
Two more very important contributions to our systematic knowl- 
edge of this family await our attention. The first appeared in 
1897 by the Swedish entomologist Aurivillius, and the second in 
1904 by Ashmead. Both contributions are in the nature of re- 
