78 ICHNEUMONIDjE. 



39. Xylonomus tartarns, sp. n. 



$ , A large and somewhat dull black species, with the body 

 5mmaculate,and the legs, antennae and stigma white-marked. 

 Head black, cubical and posteriorly not narrower than the internally 

 parallel eyes; vertex very broad behind ocelli and, like the frons, 

 scabrously punctate ; face transverse, closely and transversely punc- 

 tate ; clypeus discrete and carinately elevated at the base, broadly 

 rounded* at the apex and centrally concave ; mandibles slender and 

 discally sulcate throughout, with their base hardly as broad as the 

 inflexedly sulcate cheeks ; palpi and sides of clypeus infuscate. 

 AntewuK slender and pure black, with ninth to thirteenth flagellar 

 joints white ; subapical setre distinct. Thorax immaculate black, 

 discally deplanate, with the meta- hardly narrower than the meso- 

 thorax ; mesonotum transversely scabriculous, with the notauli 

 deeply impressed and not reaching the apical margin ; metanotum 

 nitidulous and coarsely coriaceous, with complete and strongly 

 costate areae ; basal area elongate and parallel-sided ; areola 

 hexagonal-cordiform, large and situated beyond the centre, 

 emitting costulae before its centre ; petiolar area small and sub- 

 vertical, with very large and apically obtuse apophyses and small 

 subapical spines ; spiracles large and distinctly lunate. Scutellum 

 deplanate, punctate, black. Abdomen narrow, subcylindrical and 

 immaculate black ; basal segment finely scabriculous, thrice as 

 long as apically broad, gradually a little widened throughout, 

 with the spiracles distinctly before the centre and with obsolete 

 discal carinse ; second and third segments obsoletely scabriculous 

 or alutaceous, longer than broad, with their basal angles obliquely 

 impressed ; remainder strongly transverse ; ventral plica entire, 

 hypopygium far retracted from the terebra and apically rounded ; 

 spicula exactly as long as the body, rufescent and incrassate before 

 its apex, valvulae black and not pilose. Legs black, with the base 

 of all the tibiae constricted and stramineous ; femora and tibise 

 broad and compressed ; tarsi stramineous, with the onychii black 

 and the central joints infuscate ; claws very small and not 

 extending beyond the elongate pulvilli. Wings narrow and 

 hyaline ; stigma and radix infuscate, former basally white ; areolet 

 wanting ; hind wings with the first recurrent nervure but slightly 

 postfurcal, emitting the strong nervellus from its exact centre. 



Length 20-21 millim. 



"INDIA." 



Type in the Oxford Museum. 



The above description is drawn from two females, in all proba- 

 bility from Westwood's collection. The elongate form is similar 

 to Xorides. In one example the internal nervure of the wanting 

 areolet is curiously incrassate. 



