144 MB. E. E. ATTSTEN ON NEW DIPTEROUS INSECTS. [Jan. 17, 



closely, and may be identical, but Doleschall does not mention 

 the black stripe oa the face, while he states that the abdomen of 

 his species has three transverse black bands. 



Baccha stjlica, sp. n. (Plate IV. fig. 3, ? .) 



$ . Length 9 mm. 



Face and cheeks pale 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. Antennce j'ellow ; 

 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 the 

 exception of a few outstanding pale yellow hairs on each side of 

 the first abdominal segment, the body of this species is nearly bare. 

 Legs pale yellow, the posterior tibise 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 sub- 

 costal cell, from the junction of the auxiliary vein with the costa, 

 pale brown ; the Agings are blunt at the tips : alulce. rudimentary. 



Sula Is., Malay Archipelago ( Wallace) : one specimen ; g. 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 weU as by its greater 

 size. 



I 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, $ .) 



5 . Length 8| mm. 



Purplish hlacTc, nearly hare, plevrce and abdominal marHngs 

 yellow ; those on the fourth abdominal segment sagittate. Abdomen 

 spatidate posteriorly., cylindrical, but stout, to end of third segment. 

 Wings suffused with brown at the tips ; cdidcp apparently ivanting. 



Face and cJieels 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 



