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Show 144 MR. E. E. AUSTEN ON NEW DIPTEROUS INSECTS. [Jan. 17, closelv, and may be identical, but Doleschall J~« °°^^ the black stripe on the face, while he states that the abdomen ot his species has three transverse black bands. BACCHA SULICA, sp. n. (Plate IV. fig- 3, 2 •) la^f Impale yellow pollinose, with a small but sharply-defined facial tubercle. Front metallic blue, with a pollinose stripe on each side on the lower two-thirds. Antennae yellow; first two joints very small, third joint ovate, large Thorax dark brown on the disc and below the base of the wings; pale yellow on the sides in front, and with a pale yellow pollinose vertical stripe on the pleurae below the suture, and a similar spot behind the base of the wings. Scutellum yellow. Abdomen spatulate, but not excessively attenuate at the base: first segment yellow ; second segment yellow, brown on the distal fifth and indistinctly brownish in the middle ; third segment yellow for rather more than half its length, then metallic purplish dark brown, a transverse brown band on the yellow portion ; the remainder of the abdomen metallic purplish dark brown. With tbe exception of a few outstanding pale yellow hairs on each side ot the first abdominal segment, the body of this species is nearly bare. Leas pale yellow, the posterior tibiae and tarsi brownish, and a narrow brown band on the distal half of the posterior femora, not reaching to the tips. Wings with a brownish tinge; the subcostal cell, from the junction of the auxiliary vein with the costa, pale brown ; the wings are blunt at the tips : alulas rudimentary. Sula Is., Malay Archipelago ( Wallace) : one specimen ; a second specimen is from Mysol ( Wallace). In the markings of the abdomen this species somewhat resembles Baccha moluccana, Doleschall (Natuurk. Tijdschr. Ned. Ind. xiv. p 412 pi iii fig. 2), from Amboina, which, however, is at once distinguished by its black scutellum, as well as by its greater 1ZI found the type of this species labelled "sulica " in Walker's handwriting, but I cannot discover that it has ever been described. BACCHA SAGITTIFERA, sp. n. (Plate IV. fig. 14, 2 •) 9 . Length 8± m m . . Purplish black, nearly bare, pleuras and abdominal markings yellow ; those on the fourth abdominal segment sagittate. Abdomen spatulate posteriorly,'cylindrical, but stout, to end of third segment. Wings suffused with brown at the tips ; alulas apparently wanting. Face and cheeks pale opalescent yellow ; oral margin brighter yellow ; a well-marked facial tubercle, below which the face recedes. Front yellow, with a black median stripe extending from the vertex to the base of the low antenniferous projection ; the latter brassy, with a shining black dot in the median line immediately above the antennae ; antennae orange, very small, short, third joint oval, darker above. Post-alar callosities pale yellow, pleurae brassy |
