PARASITIC IIYMENOPTERA. 337 



articulato — : palpi lobo lougiores articulo secundo longiore et 

 graciliore :"* thorax latitudine capitis et fere duplo longior, ovatus 

 subdepressus : collare transversum : mesothoracis paraptera remota 

 minuta humeris arete annexa : scutellum ovatum basi truncatum, 

 lineola transversa (ordinaria) subtilissima bipartitum, cum scuto 

 metathoracis continuum : metathorax brevis declivis scuto lineari 

 arcuato, scutello Isevi : abdomen subsessile compressum, thorace 

 angustius ; — maris dorso elevatum carinatum, apice truncatum ; — 

 femince dorso nonnihil deplanatum aculeo compresso exerto : 

 pedes quam in Spalangid breviores : tarsi tibiis parum breviores 

 articulis a 1™°. in 4°'. longitudine decrescentibus, metatarso antico 

 baud dilatato : alae anticse apice valde rotundatae, cubito brevis- 

 simo, radio ad ejus basin statim evanescente : posticae angustiores 

 quam in Spalangia. 



This genus has less of the peculiar habit of its tribe than 

 the others. On a cursory view it might be referred to the 

 EulopM, with which it agrees tolerably well in the wings and 

 thorax ; but a closer examination will shew its near accord- 

 ance with Spalangia. A few of the Pteromali approach it 

 by a compressed abdomen and the low insertion of the 

 antennae ; such is Macroglenes (Westwood), and still more an 

 unpublished subgenus in my cabinet. The males of P. vari- 

 cornis so much resemble certain F^uloplii with similar antennae, 

 (Genus Ceranisus, Walker) that they might, without examina- 

 tion, be confounded in one group. 



Sp. 1. P, varicornis. Antennarum articulis 3°. — 7"'. brevis- 

 simis latitudine sensim crescentihus, maris scapo dilatato ; 

 feraincB aculeo brevi. (Long. corp. et aculei .08; alar. .12). 



Pirene varicornis. Curtis G. 



Nigra nitida: capite thoraceque viridi- abdomine chalybeo-micanti- 

 bus : mandibulse ferruginese : antennae feminae scapo lineari, clava 

 magna ovata abrupta ; — maris scapo dilatato ovato, articulis 

 flagelli inferioribus crassioribus et clava oblonga minore quam in 

 ilia : abdomen femince lanceolatum, capite cum thorace longius, 

 aculeo fere quadrantem longitudinem abdominis aequante : genua 

 et tarsi fusco-pallidi, hi apice obscuriores, (tibiae anticae nonnun- 

 quam totae posteriores basi et apice pallidae,) alae obscure hyalinae, 

 angustiores quam in reliquis, ulna longiore, cubiti apice vix 

 dilatato. , 



** Sp. examined — P. varicornis. 

 NO. IV. VOL. I. XX 



