1893.] MB. E. B. AUSTEN OTT XEW DIPTEROUS INSECTS. 141 



femora, not reaching to the tips, and the distal third of the posterior 

 tibiae brown ; there is sometimes an indication of an incomplete 

 brownish ring round the middle of the posterior tibiae. Wings in 

 the c? sharper at the tip, and with the terminal portion of the 

 fourth longitudinal vein, closing first posterior cell, more oblique 

 than in the 2 '■> suffused with brown, usually lighter at the base 

 on the inner side, darker in the costal and subcostal cells and in the 

 middle, and with the stigma and an elongated and not sharply- 

 defined spot at the tip, above the third vein, dark brown ; wings 

 in the 2 hyaline, the subcostal cell brown, and the stigma and an 

 elongated spot at the tip above the third vein, as in the S , dark 

 brown ; third longitudinal vein gently curved : alxilce of full size. 



Ceylon (Lieut.-C'olonel Yerhury) : twelve specimens. The types 

 are from the Hot Wells at Trincomali, the S collected on Nov. 2, 

 1890, and the ? on March 13, 1892 ; very common on the Trin- 

 comaU side. Other specimens from Kandy (whence also the 

 Museum collection contains two collected by Mr. E. E. Green), 

 Heneratagoda, and Bentota. Apparently the commonest species 

 of Baccha in Ceylon. 



This species is very closely allied to BaccJia apicalis, Lw. (Wien. 

 ent. Monatschr. Bd. 2, p. 106), from Japan, and may, indeed, be 

 identical with it. Since, however, Loew describes a 2 only, of 

 which the head was destroyed, and considering the great difference 

 in the locality of the specimens, it is impossible to be certain of 

 the identity without comparing Loew's type, and 1 have therefore 

 ventured to consider the present specimens as distinct. In the 

 markings of the third and fourth segments of the abdomen, B. 

 pulchrifrons resembles B. dispar, Walker (Journ. Linn. Soc. iii. 

 [iv.] p. 121), from Macassar, Celebes. The latter species, however, 

 is at once distinguished by its much greater size and by the brown 

 band across the centre of the wing. 



Besides the specimens mentioned above. Colonel Terbury obtained 

 two others, which he bred from an Aphis-infested leaf of the 

 " Cambuk " tree, found at Nilavelli on Nov. 16, 1890. The flies, 

 which are (S and 5 , emerged on Nov. 29 and 30, 1890. The 

 specimens are somewhat smaller than the majority of those of 

 B. pulchrifrons (the 2 measures 9| mm. in length; the head of 

 the S is unfortunately missing), but resemble them in their general 

 habitus, with the following differences : — the thorax of the c? is 

 more greenish black and less bronze ; the yellow markings of the 

 abdomen in both sexes are much more distinct, sharper, and more 

 opaque-looking ; those on the third and fourth segments of the 

 abdomen of the S are larger than in B. pulchrifrons, andi the inner 

 longitudinal stripes on the fourth segment in the 5 are broader, 

 and expanded on the hind margin of the segment ; the tvings, with 

 the exception of the subcostal cell, which is brown, are hyaline in 

 both sexes, with a very faint infuscation at the tip above the third 

 vein ; there is an indication of the metallic violet spot on each 

 side of the base of the antenniferous process in the 5 • As these 

 specimens are not in a good state of preservation, it is impossible 



