101_ 



with the punctures larger and more widely separated; the seutelluni 

 lias them sn.alliT; the postscutelhim is almost impuuctate. The lateral 

 keels of the iriddle area on the metanotum are roundly curved out- 

 w^ardly and do not unite at the apex; the central one does not quite 

 reach to the apex outside it; on the basal half is a shorter less distinct 

 keel; the space Vjetween this and the outer keel is finely, irregularly, 

 transversely striated; the segment, outside the area, closely striated, 

 the striae oblique, curved, and becoming stouter towards the apex. 

 Upper part of propleurae strongly punctured, the lower obscurely rugose, 

 with some scattered punctures; except at the base the mesopleuraj 

 are strongly but not very closely punctured and shining; nietapleui-ae 

 obliquely, distinctly striated, the striae clearly sejiarated anil wa^aker 

 below the middle. R;isal segiiients of abdomen sparsely, the apical nuive 

 closely and strongly punctured; ])ygidium closely, finely punctured, 

 except round the sidesand apex; the central part obscure red; the 

 hypopygium smooth in the centre, the sides punctured. 

 343-1 Tiphia niarcosensis sp. nov. 



Black; the underside of the flagellum of antennae and the fore tibiae 

 and tarsi rufo-testaceous; -wings hyaline, the nervures and stigma black; 

 palpi fuscous; vertex and front closely and strongly punctured, a 

 smooth space below the ocelli and a short smooth line in the centre of 

 the front. Face closely rugose; the clypeus distinctly punctured, its 

 apex in the centre clearly defined, not quite transverse; the vertex at 

 the sides of t;ie ocelli smooth, bare, and shining. The whole head thiekly 

 covered with Vidiite hair. Pronotum, except for a smooth curved band 

 on the apex, strongly, but not very closely punctured. Mesonotum more 

 strongly .punctured, the punctures widely separated, the lateral furrow 

 smooth, moderately narrow and deep, and slightly curved. Scutellum 

 much more closely punctured, if not quite so strongly; there is a small 

 triangular sn.ooth space in the middle at the apex. Basal half of post- 

 scutellum punctured distinctly and closely, the apical half smooth. 

 Metanotum with three keels, the lateral slightly converging towards 

 the apex, smooth and shining, the base of the lateral part obscured' 

 punctured. First abdominal segment shining, rather strongly punctured; 

 the apical transverse furrow^ narrow and smooth. The furrow on the 

 base of the second segment distinct, strongly striated; the second segment 

 is obscurely punctured, the third and fourth at the basal half smooth, 

 the apical smooth; the others closely, strongly punctured. Wings hyaline, 

 iridescent, the basal and apical abscissae of the radius roundly curved; 

 the first transverse cubital nervure straight, not oblique; the second 

 shaped like a reaping h.iok, the "handle" on the lower side, about 

 one-fourth the size of tl:«- rest. The first recurrent nervure is received 

 shortly beyond the middV of the cellule, the second near the base of 

 the apical fourth. Calcavia and tarsal spines white. The metanotum 

 appears shorter than usunl, being only as long as the scutellum. Male. 

 Length 7.5 mm. San Marcos, 



