148 HYMENOPTEEA. 



25. Ichneumon versepacis. 



Ferrugineus ; apice antennarum nigro, medio palpisque albidis ; alis fere hyalinis, stigmate pallide flavo. $ . 

 Long. 8 millim. 



Hab. Guatemala, Panima (Champion). 



Antennae stout, becoming gradually thicker towards the apex, involute ; the third 

 joint a little longer than the fourth ; joints seven to sixteen white, the following black. 

 Head tumid, closely punctured, sparsely covered with a short white pubescence ; tips of 

 the mandibles blackish. Thorax closely punctured ; the pleurae (including the sides of 

 the pronotum) coarsely and longitudinally striated. Scutellum smooth, shining, scarcely 

 punctured, the sides carinate, narrowed towards the apex. Metanotum punctured and 

 transversely striated ; upper median area longer than broad, harp-shaped ; middle of 

 the metanotum hollowed ; lateral tubercles large, more than double as long as broad. 

 Petiole smooth, shining, the sides keeled ; postpetiole finely punctured. The rest of the 

 abdomen smooth, shining, microscopically punctured ; the second segment more strongly 

 punctured at the sides ; the sides and apex covered with rather long pale pubescence. 

 Sheath of ovipositor black. Areolet 5-angled, the upper part narrower. The costa is 

 fuscous black. 



Closely allied to I. lariceus, but smaller and narrower, and easily known from it by 

 the strongly striated pleurae, longer tubercles on the metanotum, almost impunctate 

 abdomen, and pallid yellow stigma ; the wings, too, are clearer, and the areolet is longer 

 and more narrowed above. In /. subpinguis, a species resembling this in coloration, 

 the antennae are much longer, not so stout, and not involute ; the metathoracic tubercles 

 almost obsolete, the pleurae not striated, and the stigma black. 



I. verwpacis is certainly very closely related to /. ablutus, but, I think, distinct from 

 that species ; all the nervures, for instance, in /. ablutus are said to be honey-yellow, 

 while the costa and the nervures in I. verwpacis are fuscous black ; neither can the 

 words "yellowish brown" be applied to the base of the antennae; nor is the term 

 "shagreened" applicable to the strongly punctured and striated thorax of the species 

 just described. 



26. Ichneumon ablutus. 



Ichneumon ablutus, Cresson, Proc. Acad. Phil. 1873, p. 113. no. 9 1 . 

 Eab. Mexico, Orizaba x . 



27. Ichneumon passirus. 



Ichneumon passirus, Cresson, Proc. Acad. Phil. 1873, p. 113. no. 10 \ 

 Hab. Mexico, Orizaba 1 . 



28. Ichneumon frivolus. 



Ichneumon frivolus, Cresson, Trans. A*m. Ent. Soc. ii. p. 11 ; Proc. Acad. Phil. 1873, p. 113. no. II 1 . 

 Hab. Mexico, Orizaba, Cordova l . 



