310 SPDEGID^. 



widening laterally; legs yellow, a fuscous stripe on each femur 

 above iind each of the intermediate and posterior tibiae behind ; the 

 apical joints of the tarsi ferruginous ; wings fusco-hyaline, darkest 

 towards the costal margin and the apex of the fore wing. 



Var. wanting the oblique yellow spots on the vertex, the spot 

 beneath the wings, and the subapical spots on the basal abdominal 

 segment ; scutellum and posterior legs black. 



Bab. Tenasserim ; Sumatra. $ . Lewjth 11-14 ; ex^. 20-24 mm. 

 c? unknown. 



555. Cerceris mastogaster, Smith, Cat. i\, p. 453, $ ; Schlett. Zool. 



Jahrh. 1887, p. 496 ; Cam. Mem. Manch. L. Fh. 6'oc. (4j iii, 1890, 

 p. 249. 



2 . Head thinly pubescent ; head, thorax, and abdomen coarsely 

 and closely punctured, the clypeus and front beneath the antennae 

 and the postscutellum with the punctures sparser ; clypeus with 

 its anterior margin very slightly emarginate, almost transverse ; 

 enclosed triangular space at base of median segment smooth and 

 shining, the base longitudinally striate ; a series of single punc- 

 tures along the other two sides of the triangle ; the medial furrow 

 narrow, broadening beyond the apex ol; the triangle and continued to 

 the apex of the segment ; abdomen with ventral segments 3-5 

 having laterally small erect plates, concave within. Head and thorax 

 black; the base of the mandibles, the clypeus, the front up to the 

 base of the antennae, the scape in front, the antennal carina, the 

 lateral angles of the pronotum, the tegula?, postscutellum, tibia? 

 and tarsi of the legs white ; the sides of the median segment red ; 

 abdomen red, two small spots at the base of the 2nd abdominal 

 segment, two large spots covering the sides of the 3rd, and meeting 

 in a thin line along the margin, and tAvo subtriangular spots laterally 

 on the 5th segment white ; the 4th segment laterally, the 5th at its 

 base above, and the apical segment black ; wings hyaline, fore wing 

 with a fuscous spot at apex. 



Hab. Madras. $ . Levyth 15 ; exy. 27 mm. ^ unknown. 

 Type in coll. British Museum. 



556. Cerceris unifasciata, Smith, Cat. iv, p. 456, j {nee $ ) ; Schlett. 



Zool. Jahrh. 1887, p. 505. 



d . Head, thorax, and abdomen closely and rather coarsely 

 punctured ; the clypeus convex, its anterior margin rounded ; 

 antennal carina short, scarcely produced above the base of the 

 antennae ; the enclosed space at the base of the median segment 

 longitudinally striate. Ulack ; the face below the antenna, scape 

 in front, mandibles, an obscure line on each lateral angle of the 

 pronotum, a spot on each tegula, one on the postscutellum, a spot on 

 each side at the apex of the median segment, the anterior and inter- 

 mediate tibi« and tarsi, a broad band on the apical margin of the 

 3rd abdominal segment, and the apical margins of ventral segments 

 2-5, yellow ; the apex of the coxae, the trochanters and tips of the 



