142 ME. smith's descriptions op htmenoptebous insects 



head quadrate^, with the angles roiuuled ; the antennae black ; the 

 wings very dark brown, shining and iridescent ; the posterior tibia; 

 outside and the tarsi black ; the basal segment of the abdomen with 

 an abbreviated impressed line in the middle, and another on each side 

 extending to its apical margin ; the ovipositor twice the length of the 

 insect. 

 Hab. Bachian. 



Gren. Agathis, Latr. 



1. Agathis ATROCEPHALUS. ^ . rufcscenti-flavus ; capite antennisque 

 nigris ; alis nigro-fuscis, basi flavo-hyalinis. 



Male. Length 6 lines. Reddish-yellow ; the head and antenna; black ; 

 the head strongly punctured; a deep fossulet on each side of the 

 clypeus ; the mandibles and palpi pale. Thorax shining above ; the 

 metathorax with fine longitudinal carina;, the central one expanding 

 in the middle, and enclosing a minute diamond-shaped space ; between 

 the stria; are a number of transverse carinse ; the legs densely clothed 

 with short pale pubescence, the posterior pair incrassate ; the wings 

 dark fuscous, with not quite the basal half flavo-hyaline. Abdomen 

 smooth and shining. 



Hab. Bachian. 



Gren. Xylonomus, Grav. 



1. Xylonomus fracticornis. X. nigro-cbalybeus ; capite albo 

 notato ; thorace supra maculis tribus albidis, metathorace dorso quad- 

 ricarinato ; abdominis segmento basali pallido, secundo apice binotato, 

 sequentibus apice pallido fasciatis ; pedibus ochraceis ; tarsis postice 

 pallidis. 



Female. Length 71 lines. Steel-blue, inclining to deep purple on the 

 abdomen ; the head, below the insertion of the antennae, a semicir- 

 cular spot above, on each side of the face, touching the inner orbit of 

 the eyes, and a bi-oad stripe behind them, white; the eleven basal 

 joints of the antennae black, the third and fourth with a white line at 

 the outside ; the four following joints white, the rest of the apical 

 joints black ; the apex of the eighteenth joint with two blunt spines 

 at the apex outside ; the apex hollowed out obliquely for the recep- 

 tion of the nineteenth joint, which is attenuated at its base and geni- 

 culated ; this and the following joints forming, as it were, a second 

 antenna. Thorax : the scutellum, postscutellum, tegula;, and a spot 

 beneath the wings, white ; wings hyaline and iridescent ; the legs 

 |)ale ferruginous ; the posterior tibiae dusky, and the tarsi white ; the 

 claw-joint of all the tarsi black. Abdomen : the basal segment, or 

 petiole, pale testaceous, with a blunt sj^ine on each side of its inser- 

 tion ; the second segment with two white spots at its apex ; the third 

 and pen altimate segment with an emarginatc apical white marginal 



