122 Descriptions of several Hymenoptera. 



Agonionku^rus * Westw. Genus Encyrtum cum Eulopho conjungens, e 

 speciebus minutis saltatoriis formatum. An Aphelinus Dalm. cujus cha- 

 racters non satis explicati ? 



Corpus breve, obtusum ; alae superiores neryo subcostali brevi, et, post 

 conjunctionem ejus cum margine antico, breviter protenso, at in alae dis- 

 cum non deflexo, sed in callositatem minutam terminato (g) ; antennae 

 incrassatae, 6-articulatae, articulo 2do quam lmo dimidio breviore, 3tio 

 minuto, 4to 5toque paullo longioribus, ultimo maximo ovato inarticulato 

 (e) ; tarsi 5-articulati, pulvillis magnis ; collare brevissimum. 



Body short, broad, obtuse ; upper wings with the subcostal nerve short, 

 and, after its union with the front margin of the wing, running a short dis- 

 tance, and terminating in a small, indistinct, callous point ; antennae short 

 and clavate, 6-jointed, the 2d joint half as long as the 1st ; 3d, 4th, and 5th 

 joints short, but gradually increasing in length ; the 6th forming a large 

 ovate inarticulate mass j tarsi 5-jointed, puivilli large j collar very short; 

 spur of the middle tibiae longer than in the hind legs. 



Spec. 1. Agon, basalis Westw. Niger, facie abdominisque basi fulvis. 



Black, with the face and basal joint of the abdomen fulvous ; antennae 

 and legs of the latter colour ; the former with the basal joint obscure in 

 the middle ; four posterior legs, with the tibiae dusky near the base j ab- 

 domen beneath pitchy-fulvous ; wings with the front margin yellow. 



Oxfordshire. Length, three fourths of a line. 



Chorei v a f Westw. In pedum intermediorum calcaribus et antennarum 

 articulorumnumeroEncyrto affinis. Corpus apterum, latum, subdepressum; 

 caput lunatum, thoracis latitudine et margine ejus antico arete applicatum ; 

 antennae vix clavatae ; thorax exacte quadratus collare et scutum meso- 

 thoracium brevia transversa, scutellum mesothoracicum maximum fere 

 quadratum,regionem totam posteriorem et centralem thoracis occupans ; 

 abdomen thoracis latitudine et longitudine, et ad basin illo arete applicatum, 

 inde per totam latitudinem sessile videtur, segmento lmo maximo trans- 

 verso ; reliquis brevissimis, ad apicem acuminatis. 



Body apterous, broad, and subdepressed ; head lunate, as broad as, and 

 closely applied to, the front margin of the thorax ; antennae slightly cla- 

 vate; thorax square, of equal breadth with the base of the abdomen, 

 which appears perfectly sessile ; the first segment of which is half the 

 length, with the sides parallel ; the remaining segments are very short, and 

 gradually becoming acute. 



_ Spec. 1. Chor. nigro-ae^nea Westw. Nigro-aenea, antennis pedibusque 

 piceis ; tarsis pallidioribus (d). 



Greenish-black, with the antennae and legs pitchy ; tarsi reddish. 



Dorking ; G. R. Waterhouse, Esq. Length, half a line (one twenty- 

 fourth of an inch). 



Hemiptarse v nus J Westw.y Eulopho affinis. DifFert antennis longis, in 

 utroque sexu simplicibus et 7-articulatis ; articulo 2do brevissimo, 3tio, 

 4to, et 5to, longitudine aequalibus, 6to quam 5to, et 7to quam 6to, paullo 

 brevioribus, his ultimis tribus discretis et paullo crassioribus, ultimo, ut 

 mihividetur, inarticulato (/); abdomine ovato-depresso, apice acuminato; 

 alis masculis abbreviatis, sc. vix magnitudine dimidii alarum fceminarium. 



Differs from Eulophus in the antennae, which are longer and simple in 



* Derived from the Greek a privative, gonios, an angle, and neuron, a 

 nerve ; in allusion to the nerve of the wing not forming an angle at its 

 extremity. 



-j- From the Greek choreia, leaping ; from the saltatory powers of the 

 insect. 



% Derived from the Greek hemisus, half, pteron, a wing, and arsen, male ; 

 from the small size of the wings in the males. 



