ON NEW AND LITTLE-KNOWN HYMENOPTERA. 385 
to the 5th segments with submarginal bands of a glancous-yellow, 
these bands anteriorly bisinuate, and on the Ist, 2nd and 3rd segments 
interrupted in the middle, the anal segment black with an obscure 
yellow sub-terminal and ferruginous terminal spot, below the. 
abdomen is smooth and shining, with the posterior margins of the 
segments narrowly piceous. 
This @ resembles the 2 exactly, only on the under side of the Ist 
abdominal segment there is an obtuse tubercle. 
This pretty and well marked species is not uncommon along the 
jungle paths in April and May. In the beginning of June I found 
them swarming on the side of a road over a low hill in the vicinity of 
Maulmain, and digging into a soft sandy bank just as I had seen 
Bembex fossorius doing in Pegu. 
Tribe DILOPTERA, Latr. 
Family VESPIDA4, Steph. 
36. ISCHNOGASTER RUFO-MACULATA, n, sp. 
Hasirat : Tenasserim (Salween Valley, Tavoy). 
Femate: Length 22 m.m., expanse 32 mm. 
Mate: Unknown. ‘ 
Description : @. Head black, coarsely pitted, the sides of the face 
as high as the base of the antennz and the sides of the clypeus blood 
red, the mandibles black, clypeus pear-shaped, its centre sharply pro- 
duced and bearing a short verticle raised carina; a spot in the emargina- 
tion of the eyes yellow. Thorax rather pear-shaped, not so globular 
as in some of the species, the pro- and mesothorax rugose, the scutel- 
lum, post scutellum, and metathorax smooth and shining, a line on the 
posterior margin of the prothorax interrupted in the middle, a spot 
under the base of the wings, with a crescentic mark below that, a spot 
at the angles of the scutellum, a line on the post scutellum, and two 
spots one above the other on the posterior angles of the metathorax 
blood red ; the scutellum gibbous cone-shaped, the metathorax 
sloping steeply but regularly to the apex: wings brownish hyaline 
with bronze iridescent reflections in certain lights, the nervures and 
tegulze dark brown ; legs black, the tegule and tarsi of the anterior 
legs in front, and a spot on the tibize of the intermediate and of the 
coxe of the posterior legs blood red, the tibie of the posterior iegs 
also clothed on the inside with a dense soft golden pubescence ; the 
