PARAGUS. if 
50 (51) Third antennal joint bare, as usual, 
more or less elongate; arista well 
developed, of ordinary size; face 
without oblique furrows ........ .. Muicropoy, p. 119. 
51 (50) Third antennal joint many times as 
long as the first, with a fringe of 
long hair on its whole length ; arista 
rudimentary, vepresented only by 
a short stump; face with oblique 
furtowsy... deat, 9. S38RE gil whith PriropacrruM, p. 136, 
52 (47) Antenne with a terminal style, and 
very often placed on a long petiole; 
small cross-vein beyond middle of 
the discal cellwnanixls. .. taille ..... CERIOIDES, p. 138. 
Subfamily T. SYRPHIN A. 
Genus 1. PARAGUS, Latreille (1804). 
The species of this genus are widely distributed throughout the 
Ethiopian region, and the present collection includes representatives 
of practically all the known species, as well as two new to science. 
Paragus signatus, Walker (1860), from Natal, seems to be a 
Graptomyza, as Dr. Speiser has recently pointed out. 
The species before me may be tabulated as follows :— 
1 (4) Abdemen with the middle segments fused 
together, the sutures being sometimes 
distinguishable in the female only ; 
shape of bedy broadly ovate; wings 
without pubescence in the middle; 
eyes with very long pubescence, 
which forms distinct stripes, 
2 (5) Seutellum with the apical half yellow, 
and with the hind border deeply 
serrulate ; face in both sexes with a 
black stripe ; thorax with two distinct 
whitish dorsal stripes ..........2+. serratus, Fabr. 
3 (2) Seutellum wholly black and not serrulate 
behind; face of the male without a 
black stripe ; thorax without distinct 
SUBIDER™ oo aus ate er: bt Bice ae borbonicus, Macq, 
4 (1) Middle segments of the abdomen well 
separated, only the first and second 
fused together; shape of body narrowly 
elongate: wings with distinct pubes- 
cence towards the middle; eyes with 
very short, sometimes hardly distin- 
guishable pubescence, which js not 
arranged in stripes ; scutellum always 
black, 
5 (10) Face of the male without a black stripe ; 
wings with distinct pubescence in the 
middle: species usually of larger 
size, with less produced face and a 
narrow yertical triangle in the male. 
