186 HYMENOPTEEA. 



scutellum, the apex of the scutellum, the postscutellum, two large marks on the meta- 

 notum, the tubercle below the tegulae, an oblong mark below, a round one below the 

 hind wings, a large mark close to the mesosternum, and an equally large one on the 

 metapleurae, yellow. Metanotum coarsely punctured and reticulated ; the apex semi- 

 oblique, hollow in the centre, the hollow being less strongly punctured than the rest, 

 and with the sides margined. Petiole and postpetiole smooth, impunctate, the latter 

 with a few punctures at the apex. The rest of the abdomen oval, punctured, black ; 

 the edge of the second, the third at the apex, and the apical segment almost entirely, 

 yellow ; gastrocceli large, deep, shining, striated, aciculate ; a large transverse furrow 

 at the base of the third segment ; the second segment strongly, the third and fourth 

 more finely, punctured ; the apical segment almost impunctate. Four anterior legs 

 entirely, and the hind tarsi, fulvous ; hind coxa?, trochanters, femora, and tibiae, black ; 

 the coxae yellow behind. 



149. Ichneumon fastidiosissimus. 



Niger; facie, orbitis, annulo flagello antennarum, linea pronoti, maculis thoracis, coxis trochanteribusque 

 anterioribus, macula coxarum posticarum, maculisque lateralibus abdominis, albis ; pedibus rufis, coxis 

 trochanteribusque posticis (macula excepto) nigris ; alis hyalinis, nervis stigmateque nigris. <$ . 



Long. 13 millim. 



Sab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion). 



Antennae nearly as long as the body, stout, covered with a microscopic pile ; the 



third and fourth joints sub equal. Face densely covered with white hair, punctured; 



the clypeus scarcely transverse at the apex ; mandibles for the greater part piceous 



black ; behind and above the antennae (except at the orbits) the head is black. Ocelli 



raised, a curved deep furrow in front of them. The collar is white and raised in the 



centre, the raised part being lower than the pronotum close to the mesonotum, and 



there is also a longish mark on its side ; the line on the edge of the pronotum is 



short, and from it the pronotum runs quite straight and flat to the collar ; the pronotum 



is strongly punctured, the sides shining. Mesonotum strongly punctured all over ; the 



pleurae in front strongly projecting out from the prothorax ; a deep curved hollow in 



the centre. The carina? in front of the scutellum are white at the base ; the scutellum 



is white behind; tegulae, the tubercle below, one about the same size below the 



fore wings, a large longitudinal mark in the middle of the mesopleurae, two marks 



below the hind wings, a roundish mark on the metapleurae, a small mark on either 



side of the metanotum, and the tubercles, white. Scutellum largely projecting, almost 



equally from the base and apex ; the sides bluntly keeled ; the upper part depressed in 



the centre, and having a tubercle-like projection on either side. Metathorax coarsely 



and transversely striated and punctured ; the areae complete ; the supramedian area 



with a longitudinal keel in its centre, from which run strong striations to the sides ; it 



widens towards the apex, and is longer than broad ; petiolate area hollowed ; tubercles 



