MACIIOGASTER. 



27 



Table of Species. 



1 (6) Central mesonotal lobe higher than 



the lateral ; metanotum more or less 

 transversely strigose or reticulate. 



2 (5) Body black. 



3 (4) Legs nearly entirely black ; antennae 



not white-banded nigricansj Cam., p. 27. 



4 (3) Leq:s mainly pale ; antennae white- 



banded varipes, Cam., p. 28. 



o (2) Abdomen and anterior legs red, hind 



legs black ferrut/ineus, Cam., p. 29. 



6 (1) Central mesonotal lobe not higher than 

 the lateral ; metanotum not reticu- 

 late or transversely strigose luteus, Cam., p. 30. 



1. Macrogaster nigricans, Cam. 



Macrogaster nigricans, Cameron,* Manch. Mem. 1899, p. 194 ( ). 



$ . Head black, with the facial orbits broadly, and the frontal 

 narrowly, testaceous-flavous ; face strongly punctate, becoming 

 irregularly reticulate ; epistoma prominent and in c? carinate 



above ; clypeus impunctate, 

 with the sides straight and 

 oblique ; mandibles with elon- 

 gate white pilosity, their basal 

 half deeply punctate and centre 

 bicarinate ; palpi infuscate. 

 Antenna shortly pubescent 

 throughout. Thorax immacu- 

 late ; mesonotum strongly and 

 deeply punctate, its apex trans- 

 verse, with the central lobe 

 distinctly elevated; metanotum 

 apically deplanate, transversely 

 striolate, laterally at the base 

 and before the spiracles irregu- 

 larly reticulate, with a small, 

 transverse and apically emar- 

 ginate basal area ; pro- and 

 F.g. ^-Macrogaster mgncans, Cam. S, ego _ pleura) pullct ate-stri g ose, 



with the latter centrally gla- 

 brous and plumbeous ; metapleura? reticulate and white-pilose. 

 Scutellum niticlulous and apically plumbeous, with large and 

 sparse punctures ; basal fovea large, deeply impressed and 

 as broad as the scutellum, transversely tricarinate with the 



* An asterisk against the name of a species in the synonymy indicates that 

 a type or cotype has been examined by the author. 



