IPHIAULAX. J! | ; 365 



Differs from /. pugillator in being a little longer ; the abdotrflrPIonger and narrower 

 compared to the thorax ; the petite not so much raised and its inner furrow not so 

 strongly crenulated ; there is no keerdividing the suturiform articulation in the middle, 

 although there is a raised area in front of it ; the thorax bears more red (the meta- 

 notum having a thin red line only in 1. pugillator) ; and the wings are lighter in colour 

 at the base. 



53. Iphiaulax pugillator. 



Niger, linea pronoti, mesonoto strigaque metanoti rufis, abdomine ferrugineo ; alis fuliginosis. $ . 

 Long. 8 millim. ; terebra 6 millim. 



Hob. Mexico, Presidio (Forrer). 



Antennae stout, microscopically pilose ; basal joint pedunculated, curved, longer than 

 the third and fourth joints together. Head sparsely covered with white hair, opaque, 

 finely punctured ; front not depressed, the central furrow narrow. Abdomen longer 

 than the head and thorax united and much wider than the latter. Petiole deeply 

 excavated at the base ; the central part rounded at the apex ; the inner furrow very 

 wide, but not very deep, the outer furrow scarcely half its width. Second segment with 

 an . acute area (broad at the base, tapering towards the apex) in the centre, the area 

 reaching to beyond the middle ; lateral depression oblique, deep, not reaching to the 

 apex of the central area. Suturiform articulation wide, moderately deep, the branches 

 issuing a little beyond the middle of the segment ; the second articulation curved, 

 narrower than the first ; the third articulation indistinct. The mesonotum in front of 

 the scutellum, the edge of the pronotum, and a narrow line down the middle of the 

 metanotum, red. Wings dark fuscous ; the stigma black, fuscous on the lower side ; 

 the nervures fuscous at the apex. 



>^54. Iphiaulax paganus. 



Niger, macula pronoti, mesonoto abdomineque ferrugineis ; alis fuscis. $ . 

 Long. 6 millim. ; terebra 5 millim. 



Hab. Mexico, Presidio (Forrer). 



Antennae stout, microscopically pilose ; scape distinctly pedunculated. Head covered 

 with long white hair; obscurely, the face more strongly, punctured; face transverse; 

 front scarcely depressed, the central furrow indistinct. Abdomen distinctly longer than 

 the head and thorax united, somewhat wider than the mesothorax. Petiole with its 

 central part wide, but narrowed at the base, the apex transverse ; the inner furrow wide 

 and separated from the narrower outer furrow by a wide keel. Second segment with an 

 elongate triangular area in the centre, the area reaching a little beyond the middle ; 

 the lateral depression pear-shaped, reaching nearly to the apex, the latter being wider 

 than the base and rounded. Suturiform articulation somewhat narrow, the basal 



