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Bulletin Wisconsin Natural History Society [Vol. 11, No. 4 
Thus, recapitulating, by the end of the first half of the nine- 
teenth century we find but two described genera of the family, 
namely Trichogramma Westwood and Calleptiles Haliday with 
three species between them, evanescent Westwood of the first 
genus and latipennis Haliday and carina Walker of the second; 
the existence of another species had been foreshadowed by Stoll- 
werck (1849). But at that time the types of the two known genera 
were hopelessly confused with each other; however, it was more 
or less recognized that they were somewhat anomalous in structure 
and were consequently occupying an uncertain place in the eulophid 
or encyrtid groups of genera and Haliday had gone so far as to 
place them in a separate tribe thus foreshadowing their recognition 
as a distinct family several years later (Foerster, 1856). 
Entering upon the second half of the nineteenth century we 
find at the outset some notable additions to the knowledge of the 
group, culminating at the end of the half-century in a definite 
concept of its systematic relations and at least some arranged sys- 
tem of classification. In the first year of this half-century, Walker 
(1851) gave in MS. notes by Haliday a synopsis of the Tricho- 
grammini, which, as the name implies, was ranked as a distinct 
tribe; three new genera were founded, namely Chaetostricha 
Haliday, Brachista Haliday and Oligosita Haliday, and Walker 
described in addition Trichogramma vitripennis Walker. More- 
over, the tribe was divided into two sections, the first with the 
pubescence of the wings arranged in regular lines containing Tri- 
chogramma and Chaetostricha, the second section with the pubes- 
cence of the fore wings arranged irregularly or normally containing 
the genera Brachista and Oligosita; these two sections afterward 
were raised to subfamily rank (Ashmead, 1904). Haliday’s synopsis 
is quoted herewith: 
‘Synopsis of the Trichogrammini/ 
‘ “Trib. Trichogrammini. Tarsi trimeri. Tibiae anticae calcari apice 
inciso. 2 Antennae articulis 6,3 extremis in clavem coarctatis (an semper?): 
abdomen subsessile: statura Aphelini ( Myinae ) fere, et huic magis affines 
videntur quam Eulophinis; Oligosita vere pedibus gracilibus, tarsis 2 dl 
paris elongatis, alis longe fimbriatis Thysani speciem mentitur. 
2 The mention of this character is inexplicable to me, since it is characteristic of the family to 
lack cephaclic spurs, or when present, to bear them very short and straight, the strigil absent.— 
A.A.G. 
