318 SPHEGID^. 



the postscutellum between the scntellar lateral lamellae, which are 

 broad, and roundly curved on the outside, the inner sides emarcinate, 

 the apex acute ; mucro narrow, not dilated at apex, and slightly 

 but widely incised ; the median segment beneath truncate, smooth 

 and shining in the middle, the sides obliquely striate. Black ; the 

 base of the mandibles, the scape of the antennae, a line on the 

 pronotum, the tubercles, an ovate spot on each side of the scutellum, 

 the scutellar lamellae, the apex of the mucro, the apices of the 

 femora, the tibiae and tarsi, a large spot on each side of the basal 

 abdominal segment, a line emarginate anteriorly on the margin of 

 the 2nd, and a complete line on the margins of the 3rd and 4th 

 segments, yellow ; the antennae, the coxae and femora, and a stain 

 on the intermediate and posterior tibiae in front ferruginous ; 

 wings hyaline, nervures and tegular ferruginous. 



Hah. India (*S'«n77t). 5 • -^^''^^^^ 5'5 ; e.^^:*. 11 mm. c? unknown. 

 Type in coll. British Museum. 



570. Oxybelus aestuosus, n. sp. 



6 . Head and thorax very closely and coarsely, abdomen much 

 more finely punctured ; clypeus very narrow, transverse ; meso- 

 notum, scutellum, and postscutellum with a medial longitudinal 

 carina ; the apex of the mesonotum, the scutellum, postscutellum, 

 and inside of the mucro except at apex reticulate ; median segment 

 broad, the sides above obliquely and widely striate up to a lateral 

 carina, below that nearly smooth, obscurel}'- transversely striate ; 

 the enclosed triangular space at base below the mucro, and the 

 apex of the median segment beyond smooth and shining ; the 

 squamae rounded ; the apex of the mucro deeply incised, its sides 

 slightly recurved. Black ; the scape of the antennae, the posterior 

 margin of the pronotum, the tubercles, squamae, the anterior and 

 intermediate femora beneath, the tibiae and tarsi, the posterior 

 tibiiB above and the tarsi, and elongate narrow subapicnl spots on 

 each side of the basal four abdominal segments, yellow ; the 

 clypeus, front, and cheeks with a thin silvery pubescence ; wings 

 hyaline, nervures and tegulae testaceous. 



Hah. Tenasserim, d" . Length 5-5; exjp. 10 mm. 5 unknown. 

 Type in coll. British Museum. 



*571. Oxybelus insularis. Kohl, Termesz. FUzetek. 1884, p. 109, $ ; 

 Cam. Mem. Munch. L. Ph. Soc. (4) iii, 1890, p. 276. 



5 . " Black ; mandibles yellow ; a line on the pronotum, the 

 tubercles, a spot on each side of the scutellum, the internal margiii 

 of the squamae, and sublinear small spots on the 1-4 abdominal 

 segments laterally, ivory-white. Anal segment black. Legs black, 

 variegated with red and ivory-white. Wings subhyaline. Punc- 

 tures somewhat sparse, denser on the abdomen than in Oxi/belus 

 mandihularis. Mesothorax shining, sparsely punctured. Mucro 

 not dilated at apex and lightly emarginate." 

 Hah. " Ceylon. 5 . Length 5 mm." 



