PARASITIC HYMENOPTBRA AND TENTHREDINIDiE. 161 



mesouotum are smooth and shining, and are sparsely punctured ; the 

 mesonotum has a few hirge punctures on the lateral lobes. Scutellum 

 with four rows of large round punctures on the sides, the apex bearing 

 similar punctures ; the centre is smooth, the smooth part becoming 

 narrowed towards the apex. Median segment raised in the centre, 

 where it is closely irregularly reticulated ; this part is bounded laterally 

 by a large basal and a smaller middle area, broader than long, and by 

 a larger apical one with a round fovea in the centre. Propleurse 

 strongly and deeply punctured ; the mesoplenrs coarsely reticulated, 

 the reticulations being in oblique rows. Legs for the greater part 

 blue, the tarsi blackish ; the tibias and tarsi covered with a pale down. 

 Abdomen minutely and closely punctured ; the apical incision is larger 

 than usual ; broader, more rounded, at the base ; in length it is 

 almost as long as its width at the apex. 



TENTHREDINIDiE. 



Selandria andeana, sp. nov. 



Black ; the greater part of the prothorax, the four basal segments 

 of the abdomen, the apex of the femora narrowly, and the base of the 

 tibiae more broadly, pale luteous ; the wings hyaline, with a distinct 

 fuscous tinge, the nervures and stigma black. $ . Length, 8-9 mm. 



Hah. Machachi, 9-10,000 ft. . -^ ^ 



Antennae black, thickly covered with short stiff black pubescence ; 

 distinctly tapering towards the apex, the joints clearly separated. 

 Head entirely black, shining, thickly covered with short stiff black 

 pubescence. Frontal area large, bounded laterally by broad keels 

 its lower half deeper, its sides and apex rounded, and there is a 

 roundish flat tubercle in the centre. Clypeus obscurely, finely, and 

 closely punctured ; its apex broadly, but not deeply, incised. In the 

 centre of the vertex is a narrow longitudinal keel ; at its sides is a 

 large deep fovea. Thorax smooth and shining ; the middle lobe of 

 the mesonotum is clearly separated, and its middle is deeply keeled. 

 Scutellum flat ; its base is obliquely narrowed — somewhat /\-shaped 

 and deeply separated ; its apex is narrowly obscure luteous. Cenchri 

 large, dull white. Legs thickly covered with a stiff pile ; the calcaria 

 are short ; the patellae large ; the claws have a large almost straight 

 spine near the middle. The second cubital cellule is slightly, but 

 distinctly, longer than the third ; near the base of the cubital nervure 

 on the lower side is a short oblique projection ; the accessory nervure 

 in the hind wing is interstitial. 



The male is similarly coloured ; the antennae are not much longer 

 and hardly thinner than they are in the female. 



This species was referred, in Mr. Whymper's ' Travels in the 

 Great Andes,' p. 356, to Strongylogaster, but it agrees much 

 better with Selandria. 



