NOTES ON THE ETHIOPIAN FRUIT-FLIES — II. 43 



3. Trypanea hexapoda, sp. nov. (PL i, fig. 12). 



A small species with 4 scutellar bristles, distinct from all the allied species in 

 having the discoidal cell crossed in the middle by a dark ray, which does not reach 

 the hind border of the wing ; but it has 6 complete rays, whence the name. 



$. Length of the body, 2 '5-2 '7 mm. ; of the ovipositor, 0'4 mm. ; of the wing, 

 2"5-2"7 mm. Occiput black, grey-dusted, but yellowish on the sides and below ; 

 frons flattened, elongate, as broad as the eye, twice as long as broad, only slightly 

 prominent above the root of the antennae ; the middle frontal stripe is yellow, 

 opaque, with broad whitish orbits and greyish ocellar dot. Face short and yellowish, 

 like the narrow and immaculate jowls ; mouth-border distinctly prominent. An- 

 tennae short ; second joint projecting and reddish ; third joint as long as second, 

 distinctly attenuated but not acute at end, and more or less darkened ; arista 

 brownish, bare. All the bristles around the occipital and vertical borders are 

 whitish and thick ; the oc. and the or. are dark brownish ; only 2 lower or. ; oc. 

 rather stout. Palpi and proboscis dark yellowish ; the latter is rather long and 

 bicubitate, its last portion being as long as the basal one. Thorax black, densely 

 grey-dusted ; in well preserved specimens it seems to be cinereous on the back, 

 with a dark, longitudinal, middle stripe ; the pubescence is yellowish ; the bristles 

 are dark brownish or even blackish, but those of the pleurae are whitish ; chaetotaxy 

 normal. Scutellum and mesophragma coloured like the thorax ; the former has 

 4 bristles, those of the apical pair being much shorter and crossed. Halteres pale 

 yellowish. Abdomen black, dark grey-dusted, with yellowish pubescence and with 

 yellowish or brownish bristles ; ovipositor short, flattened, broad, obtuse, shining 

 black, with short whitish pubescence at base. Legs entirely yellowish, rather 

 short and stout, chiefly those of the front pair ; front femora with 3^ yellowish 

 bristles beneath. Wings rather elongate, with a distinct costal bristle ; 2nd, 3rd 

 and 4th longitudinal veins straight and gradually diverging towards the end ; 

 second vein ending in the middle between the ends of the third and first ; third 

 bare ; hind cross- vein much longer than its distance from the small cross- vein ; 

 lower angle of the anal cell a right angle and not produced ; 6th vein very short, 

 not produced into a spurious continuation. The pattern is like that of augur, but 

 it is more blackish and agrees more with that of confluens ; the deep black spot 

 at end of the 3rd vein is very distinct. Characteristic of the species are : a denti- 

 form projection of the black of the first basal cell along the 3rd longitudinal vein 

 towards the base of the wing ; and a dark ray, which, crossing the middle of the dis- 

 coidal cell, ends towards the middle of the 3rd posterior cell. The 3 hyaline spots 

 of the black apical patch are disposed as in confluens. 



The present species seems to be allied to cosmia, Schin., which is recorded from 

 Aden by Becker. 



Type $, and an additional specimen of the same sex from Gold Coast, Aburi, 

 March- April, 1911, on leaf of Tabernaeniontana (L. Armstrong). 



4. Trypanea confluens, Wiedemann (1830). 



Allied to the preceding species, but distinct from it and from all the others on 

 account of the short 2nd longitudinal vein. From the preceding it differs in having 



