NOTES ON THE ETHIOPIAN FRUIT FLIES — II. 37 



4. Euribia caffra, Loew, Berl. Ent. Zeits., v, 1861, p. 290, pi. ii, fig. 21. 

 Characterised by the middle dark cross band, which is not distinguishable in 



the two following species. 



Described from Caffraria, and not found since. 



5. Euribia dissoluta, Loew, Berl. Ent. Zeits., v, 1861, p. 291, pi. ii, fig. 22. 



The diffuse and paler reticulation of the wings is the principal feature of the 

 species. 



6. Euribia tristrigata, sp. nov. (PL i, fig. 9). 



Nearly allied to the preceding species, but distinguished by the more marked 

 thoracic pattern and by the more definite and closer dark pattern at the apex of 

 the wings. 



<^$. Length of the body, 3-3 "2 mm. ; of the ovipositor, 1 mm. (if exserted, 2 mm.) ; 

 of the wings, 3-3 "2 mm. Head reddish, but with the occiput broadly black, grey- 

 dusted ; frons flattened, not prominent, orange-yellow on the front half, the middle 

 band being divided by a longitudinal median whitish stripe, and with whitish 

 eye-borders ; the narrow ocellar dot is black ; lunula whitish ; face yellow in the 

 middle, whitish on the sides, slightly prominent at the upper mouth-border ; the 

 narrow cheeks and jowls are white. Antennae reddish yellow, shorter than the face ; 

 third joint rounded at tip ; arista bare ; palpi whitish ; proboscis yellowish, with 

 short recurrent flaps, but not properly geniculate. All the bristles of the hind border 

 are whitish, and also the first of the superior or. ; the longer vt. is black, like the oc. 

 and the other or. ; 2 lower or. ; oc. long and stout. Thorax black, but clothed with 

 a dense grey dust, which is darker on the back and lighter on the pleurae ; on the 

 back there are 3 well-marked, longitudinal, blackish stripes, those on the dorso- 

 central fines being a little broader than the middle, and being all evanescent behind ; 

 pubescence pale yellowish. All the bristles are black and inserted in small black dots. 

 Scutellum flat, triangular, yellowish, grey-dusted, with blackish base and a more 

 or less broad dark spot on each side ; apical bristles not weaker than the basal ones, 

 and crossed at the tip. Mesophragma black, with dense grey dust. Halteres 

 whitish. Abdomen black, with dense grey dust ; the narrow hind borders of the 

 segments, but the entire end half of the last segment in the male, are yellowish red ; 

 there are 4 parallel longitudinal rows of rounded black spots, those of the middle 

 broader, and more elongate in the male ; pubescence yellow, bristles black ; male 

 genitalia yellow, white behind ; ovipositor long, flattened, shining red, narrowly 

 black at end. Legs rather short and stout, entirely reddish ; front femora with 

 2-3 black bristles beneath ; hind tibiae with no distinct row. Wings elongate, with 

 short but distinct costal bristle ; 3rd longitudinal vein bare, perfectly straight and 

 parallel with the likewise straight last portion of the 4th. Wing pattern very like 

 that of dissoluta, but with a dark praeapical band, which is not interrupted by 

 hyaline streaks, and therefore the rounded spot below the end of the 2nd longitudinal 

 vein, the apical one and that below the end of the 4th vein are more sharply defined. 

 Lower angle of the anal cell acute, and rather produced ; small cross- vein placed 

 on the last third of the discoidal cell. 



