428 Philippine Journal of Science ^i 9 



and ending a little before hind border of last segment. Last 

 two segments with a broad black patch on each side, in the shape 

 of a lunate spot, chiefly those of the fourth segment; oval patches 

 of fifth segment less indicated and nearly opacous. Venter 

 entirely reddish yellow, only the pregenital plate being blackish. 

 Hind border of third segment with black cilia on sides. Legs 

 and coxse reddish yellow, with tarsi whitish at base; short pu- 

 bescence whitish, middle spur black; four anterior tibiae more 

 or less darkened outwardly and at base; hind tibiae blackish, 

 with a broad prominent tubercle at hind side before the end. 



Wings (Plate I, fig. 8) hyaline, very iridescent and shining; 

 veins reddish; second longitudinal vein straight, short and very 

 close to costa, the marginal cell being as narrow as stigma; 

 third vein rather sinuous, curved above before its end; terminal 

 portion of fourth vein very little curved at base; small cross 

 vein very long, placed about on middle of discoidal cell, the 

 latter less regular than usual, being a little restricted above on 

 its basal half; supernumerary lobe not much developed. The 

 pattern consists of a very narrow costal border, including the 

 stigma and the very narrow marginal cell; at distal end of this 

 border and narrowly united with it, a very broad, rounded, 

 blackish spot at ends of submarginal and first posterior cells. 

 Costal cells quite hyaline, first basal darkened above the second. 

 Anal stripe well developed, and apparently broadened at end 

 of the joint of anal cell. 



Note. — The present species, because of its broad frons, the 

 restricted base of its abdomen, and its wing pattern, recalls some 

 species of the genus Mellesis with shortened first antennal joint, 

 like M. brachycera Bezzi, from India; but it seems that the 

 anterior supra-alar bristles as well as the prescutellar bristles 

 are present. 



13. Chaetodacus eucurbitae Coquillett, 1899. 



This is well distinguished from all the other species by the 

 three pairs of lower orbital bristles, the middle yellow stripe of 

 the back of mesonotum, and the peculiar wing pattern with the 

 broadly infuscated hind cross vein. 



Luzon, Laguna Province, Los Baiios and Mount Maquiling 

 (Baker) . Mindanao, Davao (Baker) . These insular specimens 

 are a little smaller than the continental ones (from India), 

 measuring usually not over 6 to 6.5 millimeters in length. 



14. Chaetodacus caudatus Pabricius, 1805. 



The Philippine specimens of the present species are very much 



