. NOTOGONIA. 53 



versely aciculated. Legs densely pruinose; the brush on the metatarsus and claws 

 reddish-fulvous. Recurrent nervures very nearly united ; the second cubital cellule at 

 the top scarcely half the length of the third at the top, and less than the distance 

 bounded by the first transverse cubital and recurrent nervures, the former curved at 

 the top half. 



Apart from the difference in the form of the prothorax, this is a smaller species than 

 JV. violaceijpennis. It has the mandibles striolated (not rugose) at the base, and their 

 median teeth sharply pointed (not rounded). The pile on the face is paler ; the fovea? 

 on the clypeus are absent, or, at any rate, are very indistinct and confused ; the furrow 

 on the mesopleuree is longer and narrower ; the abdomen is more densely sericeous 

 throughout ; the pygidium is rounded at the apex ; the ventral surface is very distinctly 

 aciculated (which is not the case in 1ST. violaceipennis) ; and the wings are not violaceous, 

 and have the first transverse cubital nervure curved at the top. 



n/ 3. Motogonia championi. 



Nigra ; abdomine quam thorax longiore ; alis violaceis, apice f uscis. 

 Long. 17 millim. 



Hah. Guatemala, Paraiso 300 feet (Champion). 



Antennae longer than the head and thorax united, covered densely with a silky pile, 

 especially towards the base ; the first joint a little longer than the second and third 

 joints united, narrowed at the base, which does not project close to the pedicle, the 

 lower side not carinate ; second joint scarcely contracted at the base, about one fourth 

 the length of the third, the latter becoming gradually (but slightly) thickened towards 

 the apex, and distinctly thinner and longer than the fourth. Head opaque ; the vertex 

 bearing a fuscous, the cheeks, front, and face a silvery, and the clypeus a longer and 

 thicker fulvous, pubescence. Clypeus punctured, rounded, the apex with a narrow 

 incision; the centre at the base keeled. Mandibles with the apical half piceous, the 

 base finely rugose. The depression on the vertex is broader than long, the bottom 

 forming a raised triangle ; the furrow leading from the ocellus is narrow ; the central 

 depression on the front is deep, and is clearly separated from the furrow leading- 

 down to the antenna?. The eyes at the top are separated by the length of the third 

 antennal joint. Thorax semiopaque, aciculate ; the mesonotum neither depressed at 

 the centre nor at the sides ; scutellum shining, impunctate ; postscutellum aciculate ; 

 metanotum opaque, alutaceous, the centre slightly depressed, and with a keel down the 

 basal half, the middle segment semioblique, furrowed down the centre. The furrow on 

 the mesopleuree extends a little beyond the middle. The prothorax in front, the edges 

 of the tubercles, and the sides of the metanotum and the middle segment bear a short 

 silvery pile ; the sternum has a fulvous pubescence. Abdomen elongated, nearly as 

 long as the head and thorax united, narrow, the apex acute, the segments at their point 

 of junction silvery; the pygidium punctured, the apex rounded, the pubescence and 



