NEW SPECIES OF INDIAN HYMENOPTERA. 571 



obtained by me at Ferozepore. I had then only a few specimens, 

 but the same insects are common at Quetta, and I find that they muFt 

 bo united as 9 and-# of one species. I have seen them in coitu, and 

 have obtained a considerable number of both forms ; all those of the 

 lutea form were females, and all those of the flavomaculata form were 

 males. The $ is invariably the larger and more stoutly made insect. 

 The maxillary palpi are 6-jointed, the basal joint the broadest, 2nd 

 the longest, remainder sub-equal. The labial palpi are 4-jointed, the 

 basal joint about one-third longer than the 2nd, apical two joints email, 

 sub-equal. The antennae of the $ are 12-jointed, those -of the $ 13- 

 jointed. The $ has only one calcar on the posterior tibiae, the 9 

 having two. In both sexes the tarsal claws have a large but blunt 

 subapical tooth, and a somewhat large pulvillus. 



NOMADA DETECTA, n. Sp. 



9 Head and thorax finely rugose, granular, abdomen minutely acicu- 

 late ; clypeus produced, its anterior margin rounded ; a short carina 

 between bases of antennae ; scutellum with a median depression, causing 

 it to appear almost bi-tuberculate ; postscutellum and median segment 

 very steeply sloped, the enclosed space at the base of the latter almost 

 smooth ; 2nd abdominal segment the broadest. Dark red , the mandi- 

 bles at base, the labrum, clypeus and front as high as the base of 

 antennae, scape of the latter, pronotnm, tubercles and the greater part 

 of the thorax laterally and below, scutellum, postscutellum, the median 

 segment except in the centre, transverse bands on segments 1, 4 and 5, 

 lateral spots on segments 2 and 3, and the tibiae and tarsi more or less 

 yellow ; the amount of yellow, especially on the abdomen, varies 

 greatly, and some specimens are almost entirely red ; tarsi and apical 

 abdominal segment with a little pale golden pubescence, remainder 

 almost bare ; wings hyaline, very slightly infuscated along their apical 

 margins ; nervures testaceous, tegulae yellow. 



$ Sculpturing similar to that of the 9 , but the enclosed space at 

 the base of median segment is finely rugose, not smooth ; apical 

 abdominal segment incised, 2nd joint of flagelluin of antennae distinctly 

 longer than 3rd. Black; the mandibles, labrum, clypeus and front 

 as high as the base of antennae, scape of the latter, pronotum, tubercles 

 and the greater part of the thorax laterally and below, scutellum, post- 

 scutellum, large round sublateral spots on median segment, wide bands 

 on all the abdominal segments (those on segments 2 and 3 slightly 



