FRUIT FLIES OF THE GENUS DACUS. 115 



3 (2). Frons narrower than an eye, with three pairs of lower fronto-orbitals ; 

 antennae not much longer than the face, with the two basal joints short ; wings 

 hyaline, with a broad apical grey and brown spot . . . . brachycera, sp. nov. 



4(1). Anterior siipra-alar bristle well developed ; abdomen properly stalked ; 

 face without black stripes in the antennal grooves ; second basal cell long. 



5 (6). Face entirely black ; thorax with a single hypopleural spot and with a 

 distinct yellow sutural stripe ; anterior supra-alar bristle weak ; wings with a dark 

 lore border ; smaller species cmhroniformis, Bezzi. 



6 (5). Face yellow, with or without more or less developed black spots or bands ; 

 anterior supra-alar bristles strong, 



7 (10). No distinct lower fronto-orbital bristles ; a single hypopleural spot ; 

 face almost immaculate ; frons with a brown middle cross-band ; femora reddish ; 

 wings narrow, with the second basal cell much longer than broad and with an even 

 brownish-yellow fore border extending to the third vein but not dilated at the end ; 

 size larger. 



8 (9). Apical spot of the marginal cell entirely brown ; yellow markings on thorax 

 and scutellum well developed ; ovipositor conical . . . . destillatoria, sp. nov. 



9 (8). Apical spot of the marginal cell hyaline towards the middle; yellow 

 markings less distinct ; ovipositor flattened . . . . . . eumenoides, sp. nov. 



10 (7). Two pairs of well developed lower fronto-orbitals ; hypopleural spot 

 double ; face with black spots or black band ; frons not banded, only with a middle 

 brown spot ; femora in part black ; second basal cell less elongate ; size smaller. 



11 (12). Face with a black transverse band ; thorax on dorsum and pleura 

 mainly black ; all the femora in greater part black ; wings with the black fore border 

 narrow, almost undilated at end pedunculata, sp. nov. 



12 (11). Face with two broad, ovate black spots ; thorax in great part reddish ; 

 the four posterior femora entirely yellowish ; wings with the dark fore border dilated 

 into a broad rounded spot at end nummularia, sp. nov. 



The last two species are from the Philippines {Prof. C. F. Baker), and will be 

 described at another opportunity ; all the remainder are from India or Burma. 



21. Mellesis sphaeroidalis, sp. nov. 



A very distinct species on accomit of the shape of its abdomen, the want of the 

 anterior supra-alar bristle, and the wing coloration. The present and the next 

 following species are not typical for the genus Mellesis, owing to their reduced chaeto- 

 taxy and not properly stalked abdomen, which is only constricted and depressed at 

 the base, not at all in shape of a cylindrical thin stalk. 



c^. Length of body, 10 mm. ; length of antenna, 2 mm. 



Head entirely reddish yellow ; occiput rather shining, with a pale yellowish border 

 near the eyes ; ocellar dot small, black ; frons very broad, distinctly broader than 

 an eye, more dark towards the middle, and rather opaque ; the orbital bristles are 

 placed on small brown dots, one upper and only two lower pairs ; lunula pale yellow, 

 glistennig ; face pale yellow, shining, with a black stripe along each antennal groove, 

 which below reaches the mouth-border, and above is prolonged in a thin point to the 

 root of the antennae ; cheeks narrow, yellow, rather opaque, like the jowls, which 



(C288) 3 



