4 Cameron, Hymenoptera Orientalia. 



and minutel)' punctured ; the c^astrocoeli long, narrow, 

 shallow, and wider at the base. 



SiLSILA HILINEATA, Sp. nov. 



Nigra ; piavo-viaciilata ; pedibus fnlvis ; coxis trocJian- 

 terilmsqiie anterioribiis Jlavis, coxis troclianteribiisque 

 posticis, apicibus femorwn tibiariimqiie nigi'is ; alis JiyaliniSy 

 stigmate nervisque nigris. $ . 



Long. 13 mm. 



Antennae longer than the body ; black, thickl}- covered 

 with short stiff black pubescence ; the seventh to sixteenth 

 joints clear white. Head smooth and shining, the face 

 covered sparsely with short, white pubescence ; the face, 

 clypeus (except at the apex), the mandibles, palpi, inner 

 orbits narrowly above, and the lower half of the outer more 

 broadly, lemon-yellow ; the ocellar region is raised ; the 

 front bluntly keeled. Thorax black, shining ; the pro- 

 jecting middle of the pronotum, the scutellar keels, the 

 scutellum (except at the apex), the post-scutellum and its 

 lateral keels, a large mark, rounded at the base, incised 

 on the inner side at the apex, a large mark on either side 

 of the apex of the median segment, produced into a nar- 

 rowed point on the inner side at the top and bottom, the 

 tubercles, a large mark on the base of the mesopleura: 

 next the sternum, narrowed roundly above towards the 

 apex, and a curved mark on the sides of the mesosternum, 

 lemcn-yellow. Mesonotum smooth and shining; the 

 middle lobe is distinctly raised and separated from the 

 lateral ; its apex is bordered on the depression by six 

 short, stout, keels. The depression at the sides of the 

 post-scutellum is stoutly keeled, the median segment is 

 smooth at the lase ; the rest stoutly and closel}' trans- 

 versely striated. The propleurae stoutl)^ longitudinally 

 striated ; the mesopleur?e more closely striated at the base 



