590 PROF. WESTWOOD ON SOME 



" Synopsis of the Trichogramniini. 



" Tarsi trimeri : tibise anticse calcari apice inciso : antennas articulis 6, 3 extremis in clavam 

 coarctatis (an semper ?) : abdomen subsessile : statura Aphelince (Myince) fere et huic magis affines 

 videntur quam Eulophinis : Oligosita vero pedibus graeilibus, tarsis 2di paris elongatis, alis longe fim- 

 briatis Thysani speciem mentitur. 



Geneetjm conspectus. 

 * Aire anticse seriatim pubescentes. 



t Vena costam sinu tantum attingens ad ortum radii. 1. Trichogramma, Westw. 



tf Vena costam longius decurrens ante ortum radii. 2. Chcetostricha, n. g. 



** Ala? vage pubescentes. 



f Alse anticse latse, margine subtiliter ciliatse. 3. Brachista, n. g. 



ft Alae anticse angustse longe fimbriate (plumatse) . 4. Oligosita, n. g." 



Of the species of these minute insects having the hairs of the wings disposed in linear 

 series and 3-jointed tarsi, Foerster describes five genera, viz. : — 



1. Poropoea, Foerst. in Verbandl. nat. Vereins Rheinlande, 8tb year, p. 28, pi. 1. fig. 10, d e (1851) 

 = Ophioneurus, Eatzeburg, Ichn. der Forstinsecten, iii. p. 197 (1852), consisting of two species, which 

 are parasitic intbe eggs of Apoderus curculionoides and Rhynchites betula, which reside, in the larva state, 

 in rolled-up oak-leaves. 



2. Trichogramma,Westw. 



3. " Chcetosticha, Walker" [rectius " Chcetostricha, Haliday," pace Foersteri]. 



4. Lathromeris, Foerster, and 



5. Centrobia, Foerster. 



But he adds to the family a section consisting of three other genera, in which the hairs 

 of the wings are not arranged in lines, viz. : — 



6. Asynacta, Foerster; 7. Brachista, Haliday; and 8. Oligosita, Haliday. 



And it is, I do not doubt, in this latter section that Frestwichia must be placed. These 

 three genera are thus tabulated by Foerster : — 



aa. Flugel nicht reihenweise behaart. 



/. Fiihler siebengliederig. Asynacta. 



ff. Fiihler sechsgliederig. 



g. Vorderflugel breit, am Rande mit zartem Haarsaum. Brachystica [rectius Brachista *, Hal.] . 



ffff. Vorderflugel schmal, lang gewimpert. Oligosita, Hal. 



The difficulty pointed out in a preceding part of this paper as to the precise character 

 of the antennae of Frestwichia prevents me from determining whether it does not in 

 reality enter into the genus Oligosita, Hal., of which the antennae are thus described : — 

 " Subclavate, brown towards the tips, much more than half the length of the body, first 

 joint very long, second cup-shaped, third and following forming a spindle-shaped club." 



This description seems to indicate that the specimen described by Haliday was a male, 

 as these organs in the opposite sex would probably be differently formed ; at all events, 

 in this uncertainty, I venture to describe and figure in this place a minute species, pro- 

 bably congeneric with Frestwichia (and of which I took several specimens on the 18th 

 of August, 1837, by sweeping grass in Eichmond Park), under the name of 



* Changed by Foerster as being too near to Brachistes, "Wesmael. 



