Miss G. Ricardo on the Asilidfe. 229 



Female. — Face covered with yellow tomentum. Moustache 

 of yellow bristles, a few weak black ones present, the hairs 

 continued to base of antennai are yellow. Palpi with 

 yellow hairs at base and black ones at apex. Antenn(B 

 imperfect, the first two joints black with black hairs. 

 Thorax is apparently covered with bright yellow tomentum 

 and the stripes are black, this is so in tlie fresh female ; in 

 the type the thorax appears greyish with no stripes. Scu- 

 tellum in. type blackish with grey tomentum, in the fresh 

 female covered with bright yellow tomentum ; both females 

 with the scutellum covered with black bristles and hairs. 

 Abdomen dull black with black pubescence, a few yellowish 

 hairs are visible ; ovipositor composed of the last four 

 segments. Legs red, the knees and the last four tarsi black ; 

 pubescence chiefly yellow, black on foi'e femora; all bristles 

 black. Wings large, clear, veins yellowish, the small 

 transverse vein below the middle of the discal cell. 



Promachus contradicens, Wlk. 



Proc. Linn. Soc. London, in. p. 87 [^Trupm1e(i] (1859); v. d. Wulp, 



Tijd. v. Entom. xH. p. 133 (1898). 

 Promachus interponens, Walker, I. c. v. p. 280 [^Trupanea] (18G1) ; 



liicardo, Anu. & Mag. Nat. Hist. (8) vi.p. 414 (1913). 



Types. Three co-types all from Aru Islands. Type of 

 T. interponens , only one female from Batjan Island. 



A species distinguished from Promachus complens by the 

 wholly black femora and by the smaller genitalia of male. 



Length, S 27, ? 26-33 mm. 



The type P. interponens appears identical with these. 



Genitalia of male are black, shining, the upper forceps 

 more slender than those of P. complensy and with their apical 

 upper edges rather concave, forming a rudiment of a tooth, 

 beyond the club-shaped forceps appear three cylindrical 

 reddish-yellow bodies ; on the underside the black projection 

 is less triangular, almost square, and elevated somewhat ; 

 pubescence on genitalia black. Scutellum yvith black bristles 

 and white hairs. 



Promachus lineosus, Wlk. 



Proc. Linn. Soc. London, i. p. 13 (18bG)lAsilus]. 

 Pro»iac/ii(8 vittuln, v. d. \Vulp, Tijd. v. Ent. xxiii. p. 1G7 (1880) ; id. 

 .Sumatra Expod., Dipt. p. 1^3 (1881). 



Type (female) from Singapore, and another mutilated 

 specimen. 



One female from Singapore {H. S^ N. Ridley), 1904, 214. 



