ME. WALKER ON DTPTEEA COLLECTED AT MAKESSAR, 149 



with black shining testaceous-bordered spots ; scutellum black, shining, 

 with a cinereous stripe ; abdomen cinereous-black, oval, tawny on 

 each side at the base, a little shorter and narrower than the thorax ; 

 hind borders of the segments whitish ; legs black ; tibiae and fore 

 femora with a whitish band on each ; wings slightly greyish, with 

 several irregular transverse blackish marks near the base, with a broad 

 exterior blackish band, which is dilated and contains a whitish streak 

 towards the costa, and with an irregular subapical blackish band; 

 veins black ; discal transverse vein nearly straight and upright, parted 

 by more than half its length from the border, and by nearly twice its 

 length from the prsebrachial transverse ; halteres white. Length of 

 the body 2^ lines; of the wings 4| lines. 



Gen. Dacus, Fair. 



176. Dacus divergens, n. s. Mas. Purpureus, longus, angustus; 

 fronte tumida, facie carinata fulvo maculata, palpis fulvis, antennis 

 piceis, arista alba subpubescente, thorace vittis tribus cinereis, ab- 

 domine fusiformi apicem versus cylindrico et cyaneo, pedibus piceo- 

 nigris, femoribus fulvis, tarsis posticis rufescentibus, alis cinereis apices 

 versus et apud venas transversas fuscis, halteribus albido-flavis. 



Male. Bluish purple, long, slender ; head whitish about the eyes ; front 

 tumid, convex ; face keeled, with a large elongated tawny spot ; palpi 

 tawny; antennee piceous, reaching the epistoma, tawny at the base ; 

 3rd joint linear, conical at the tip, six times the length of the 2nd ; 

 arista white, minutely pubescent, very much longer than the 3rd joint ; 

 thorax slightly compressed, with three cinereous stripes ; pectus cine- 

 reous; abdomen fusiform, cylindrical, and mostly blue towards the 

 tip, very much longer than the thorax ; legs piceous black ; femora 

 tawny ; hind tarsi reddish except at the tips ; wings cinereous, brown 

 on the fore part towards the tips and about the transverse veins, the 

 brown part including a curved cinereous streak between the cubital 

 and prsebrachial veins ; veins black ; pra;brachial vein very slightly 

 undulating ; discal transverse vein curved outward, parted by one- 

 fourth of its length from the border, and by much more than its length 

 from the oblique prsebrachial transverse ; halteres whitish yellow. 

 Length of the body 7 lines ; of the wings 12 lines. 

 The genus Dacus includes many distinct forms, and will probably be 

 soon divided into numerous subgenera ; the characters of the preceding 

 species dififer much from those of the type, D. Olece. Some of the 

 following species may belong to Senopterina, Macq. 



177. Dacus addens, n. s. Faun. Cyaneus, longus, angustus, capite 

 nigro, facie plana perobliqua, arista cinerea nuda, thorace vittis tribus 

 cinereis, abdomine seneo-viridi, tibiis tarsis halteribusque nigris, alis 

 cinereis apud costam et apud venam transversam discalem nigrican- 

 tibus. 



