I SPATHIUS. 381 



V 



2. Spathius ornaticornis. (Tab. XV. fig. 18, $ .) 



Niger, ore, scapo antennarum, striga mesonoti pedibusque testaceis, apice antennarum, palpis coxisque 



anterioribus albis ; alis fere hyalinis, nervis stigmateque fuscis. $ . 

 Long 5 millim. ; terebra fere 2 millim. 



Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 



Antennae longer than the body, filiform, microscopically pilose ; a broad white band 

 towards the apex, the apical two joints being themselves fuscous, the scape for the 

 greater part testaceous. Head of the usual form, fuscous-black, the apex blacker, the 

 orbits and mouth dark testaceous ; palpi long, white ; mandibles testaceous, darker at 

 the apex. Pro- and mesonotum shining, impunctate ; the middle lobe of the mesonotum 

 broadly bordered with testaceous ; the pronotum striated behind ; mesopleurae opaque, 

 aciculate ; metathorax opaque, strongly alutaceous, the apex of the metanotum scarcely 

 so, and shining ; metanotum with a central and two lateral keels, and three areae (the 

 central the longest arid all rounded at the base) on the apical half. Abdomen a little 

 longer than the head and thorax united ; petiole finely longitudinally striated ; the 

 other segments shining, impunctate ; the second segment more or less, and the apical 

 segments entirely, dark testaceous ; ventral surface brownish. Anterior legs white, 

 except the tarsi ; the middle coxae, trochanters, and the base of the femora, and the hind 

 trochanters also, white ; the rest of the legs fulvo-testaceous, the femora and tarsi the 

 darkest. Wings hyaline, the nervures testaceous ; stigma fuscous. 



«X%. Spathius fuscipes. 



Niger, antennis, capite, geniculis, tibiis tarsisque anterioribus testaceis, palpis, apice antennarum coxisque 



anticis albis ; alis fere fumatis, stigmate fusco cum basi alba. $ . 

 Long. 4*5 millim. ; terebra 5 millim. 



Hab. Panama, Bugaba (Champion). 



Antennae much longer than the body, the basal half fuscous, the apical third white ; 

 microscopically pilose. Head as in 8. ornaticornis, but the face more strongly shagreened 

 and generally more suffused with testaceous. Prothorax shining, the pronotum striated 

 behind ; mesonotum aciculate, entirely black ; mesopleurae closely longitudinally 

 aciculate; metathorax with two lateral keels (the central keel obsolete), finely 

 rugose throughout, and without areae. Petiole long, nearly as long as the thorax, 

 narrow, closely longitudinally striolated, and with two keels running down on either 

 side above ; the second segment and the base of the third closely longitudinally strio- 

 lated, opaque ; the rest of the abdomen shining, the apex testaceous. The four 

 anterior coxae and trochanters white, the hind trochanters obscure white ; the knees and 

 the four anterior tibiae and tarsi dull testaceous. Wings fuscous, much darker towards 

 the apex. 



A much more slender insect than S. ornaticornis, and easily known from it by the 

 much longer and thinner petiole. 



