230 W\ss G. llicaivlo on the Asilidte. 



One female from Sandarau A gong, Korincbi Lake, 

 Sumatra. 2150 feet, ]\Iay and June (1914). 



V. d. AVnlp described liis species from one female cauglit 

 in Borneo. 11 is detailed description makes it certain that 

 AValker's species is identical. V. d. \\'nlp's female nieasnred 

 30 mm., these 26-28 mm. He also recorded a female from 

 Datar, Sumatra. 



A fiJie species with a long black ovipositor composed of 

 the last three segments of abdomen, which is blackish with 

 broad bright orange-haired segmentations, pubescence on the 

 dark jjart chiefly of short yellow hairs. Muusiuche com- 

 posed of strong yellow bristles with a few black ones among 

 tiiem. Palpi with black hairs. AntenncB black, the third 

 joint shorter than the first one, but with a long arista. 

 Thorax blackish with yellow tomentum, a median divided 

 stripe and side ones very distinct. Sculellurn with a double 

 row of black bristles. Legs black ; tibiae reddish yellow, 

 only dark at their apices. JVinys yello\Aish, large, with a 

 very small narrow dark streak in submarginal cell. 



• 



Promachus transactus, Wlk. 



Proc. Linn. Soc. London, vii. p. 207 \Trnpanen] (18C4K 

 Promachus inornatus, v. d. A\ iili), Tiid. v. Ent. (i') vii. (xv.) p. 230 

 (lb72). 



Type (female) from ]\Iysol, Celebes. 



The species is evidently the same as the one described by 

 V. d. Wulp from Horneo and Halmaheira. He distingui.^hes 

 it from his species J^romachiis albicauda (identical with 

 P. calorijica, AValker), to which it is nearly allied by the 

 diiferencc in the gemtalia and by the moustacJie being more 

 largely black with a few while hairs below, the thoru.v has 

 distinct stripes, the pid)escence on thorax is longer and 

 thicker, the femora are entirely black, and the tibiie red- 

 vellow with black ajjiccs, the hind tibiie often much 

 darker. 



Length 181-19 mm. 



The AValker type is in biul condition, and measures about 

 If) mm. Leys as described aljove. Abdomen nppcais to 

 have black spots with grey segmentations. Oriposi/or long, 

 composed of the last three segments of abdomen. i<cuiel/ain 

 with not verv stout black and yellow biistles. 



