South African Higher Myodarii (Diptera Calyptratae) . 473 



with the tibiae partly testaceous ; anterior claws of the $ elongate : 

 anterior tarsi moderately dilated in the $. Wings somewhat greyish, 

 the third uervure is ciliated moderately far, to some distance of the 

 small transverse uervure, the posterior transverse nervure is slightly 

 sinuose, set very near the cubitus of the fourth nervure and lying in 

 the prolongation of the apical uervure. Squamae whitish, halteres 

 dark testaceous towards the base. The abdomeu bears a pair of discal 

 setae on segments 2 and 3 ; venter with long, moderately robust black 

 setae on the steruites. Thorax with 3 dorso-central setae, 2 + 1, 

 steruopleural setae strong and long, especially the hind one ; ptero- 

 pleural seta like the latter. 



The head is the characteristic part of this species. The vertex is 

 wider than the eye in both sexes, the frous is bulging, the genae are 

 developed, the peristome is twice the length of the geuae and has a few 

 long black setae bending forward planted on its surface. Proboscis 

 black, very long, thinned as in TracMnomimaJZ. B. ; palps rudimentary 

 and looking like small spindles shorter than the terminal hair. 

 Antennae moderately long and blackish, the second joint of the chaetae 

 more elongate than in T. longiiostris Macq. Superior part of occiput 

 without small black setae. In the two females at my disposal (the 

 setae are broken in the $ ), there are 2 vertical setae, the inner of 

 which is directed backwards, and a prevertical seta turning outwards. 

 The frontal setae extend down the genae to close to the eye ; they number 

 3 or 4 and are scattered, outwardly with them are small black setae 

 situated in front of the orbital setae and scattered on the genae instead 

 of assuming there the fasciculate arrangement obtaining in Trachino- 

 mima (due, doubtless, to the greater width of the frons, which would 

 account for the scattering of the setae). 



Length 13 mm. 



Hab. Cape Town. S. Afric. Museum ; Cape of G-ood Hope (Vienna 

 Museum) ; Natal. Entom. Res. Com. 



PLAGIOCOMA, n. gen. 

 Fig. 1. 



This genus is in fact a Micropalpus the genae of which bear several 

 rows of long ciliae continuing those that cover the orbital region. I 

 have seen one female only captured at Port Elizabeth (Cape) by Mr. 

 J. Bequaert. The anterior tarsi are somewhat strongly dilated, and 

 the abdomen does not exhibit the characters assigned by Brauer and 

 Bergenstamm to their genus Chaetophthalmvs. 



