22 Cameron, Hymenoptera Orientalia. 



In Bingham's table {I.e., p. 65), it comes in at " a^. Black, 

 2nd, 3rd, and base of 4th abdominal segment red, hind 

 wings hyaline at base." 



Which will now have to be sub-divided, as the terms 

 will apply to two species. 



1. Mesonotum rugose, post-scutellum and median 

 segment smooth and shining. M. madraspatana Sm. 



2. Mesonotum smooth, except for a few large, scattered 

 punctures at the apex \ post-scutellum rugose, with a few 

 large punctures in the middle; the median segment opaque, 

 uniformly finely rugose. M. violaceipennis. 



Head black, shining ; the middle of the vertex with a 

 large, smooth space, except for four small punctures 

 placed in a curve in front of a large, deep one ; the rest of 

 the front and vertex with large, deep, widely separated 

 punctures, being, if anything, larger and distinctly more 

 numerous over the antennae, clypeus coarsely punctured, 

 except at the extreme apex ; the middle not carinate, 

 mandibles entirely black, fringed with long, pale golden 

 hair; the palpi dark testaceous. First and second joints 

 of the antennae shining, bearing some large, deep 

 punctures; the flagellum pruinose, the microscopic pile 

 giving it a whitish appearance. The base of the pronotum 

 transversely coarsely aciculated; the vertical part smooth, 

 impunctate; the basal part very coarsely rugose, the 

 punctures very large, deep and elongated, running more 

 or less into each other; mesonotum smooth and shining; 

 on its apical half are a few large, deep, oval and round 

 punctures ; on the apical half there is, on each side, a 

 narrow but distinct furrow. Scutellum very coarsely and 

 deeply punctured all over; post-scutellum coarsely acicu- 

 lated at the sides ; its centre with a few moderately large 

 punctures, median segment coarsely aciculated, opaque, the 

 sides of the basal part obscurely transversely striated; the 

 apex sharply oblique, its sides punctured, but not strongly; 

 down the middle of the basal part runs a straight furrow, 



