WEST AFRICAN TRYPETID^. 169 



liinnle, a large black spot on each side o£ the face and a small brown spot 

 beneath each eye. Eyes purple, with dull greenish sheen. Antennae pale 

 brown, the third joint buff on internal aspect ; arista dark brown with pale 

 base. Pa]])i and proboscis buff. Thorax with the dorsum dark brown with 

 black markings, humeri canary-yellow and a yellow band on each side 

 lying along the outer portions of the transverse suture. Pleura dark brown, 

 crossed by a broad yellow band which ends in a spot on the sternopleura. 

 Hypopleura with two yellow spots, the lower spot being much the larger. 

 8cutellum yellow_, with two dark brov\n bristles. Abdomen pale brown, with 

 some darker irreouhir marks and a dorso-median black line from the third 

 segment to the apex, where it becomes somewhat broader. Venter browai, 

 pale at the apex. Le(fs : femora yellow, tibiae dark brown, first joint of tarsi 

 yellow, remaining joints brown. Wim/s hyaline, with a brown costal band 

 divided at the base of the wing so as to leave the costal and subcostal cells 

 clear, and then extending betw^een the costa and the 2nd longitudinal vein 

 until it crosses the apex of this vein, when it becomes slightly wider and 

 extends to a short distance beyond the apex of the 3rd longitudinal vein. 

 Anal cell brown to the edge of the wing, the brown colour spreading into the 

 3rd posterior cell. Halteres entirely cream-white. 

 ? . Ovipositor short, pale brown, flattened. 



Length of body 7 mm., wing 5 mm. 



Described from a female taken on a window^ at Yaba, Lagos, 3 p.m., 

 25.iii.1909. 



Type in the British Museum. 



Dacus fuscovittatus, sp. n. (PL XII, fig. 5.) 



Pale brown ; head yellow ; thorax pale brown with black and yellow 

 markings, scutellum yellow ; abdom.en dark brown laterally, with a broad 

 median longitudinal yellow band and a black dorso-median line. Legs with 

 the femora yellow with brown spaces ; tibiae brown, tarsi brow^n with the first 

 joint yellow. Wings hyaline, with a costal browai band, enlarged at the apex, 

 and a narrow anal band. 



Head. Occiput browai with yellow orbits ; front yellow, with 3 pairs of 

 brown orbital spots and a brown median spot uniting the two lower pairs 

 of orbital spots ; vertex dark browai ; face yellow, with an oval vertically 

 elongated black spot on each side. Antennae brown, third joint pale on 

 internal aspect ; arista brown with yellow base. Palpi and proboscis yellows 

 TJiorax pale brown ; in front of the transverse suture is a median broad black 

 band with a triangular black spot on either side and a broad yellow lateral 

 band on each side along the suture towards the root of the wing ; behind the 

 suture are 3 yellow stripes, the median one straight, the lateral ones curved 



