﻿Boinhi/liù/nc {Di^jtern) from Centra], Africa. Goî] 



6 (3). Propleurae and nietaplcurae with golden-reddish hairs ; a 



pelhicid sj^ot on the small cross-vein. 



7 (8). Third joint of the antennae elongated, as long as or longer 



than the style ..... tollini, Loew. 



8 (7). Third joint short, much shorter than the style 



ferplexus, sp. n. 



45. Litorrhynchus rcpldiis, sp. nov. (Plate L, fig. 12.) 



9. Length of the body 6 mm., of the wing 8 mm. A small 

 species, very distinct from all the others of this second group, owing 

 to the black end of the marginal cell . 



Head, dark yellowish, blackened on the frons and on the occiput, 

 clothed with black hairs and with sparse pale pubescence, antennae 

 short, the two basal joints reddish, the third blackened, of a short 

 conical shape, much shorter than the style. Proboscis 4 mm. long ; 

 palpi darkened . Thorax black, with pale pubescence ; the hairs 

 are long, those on the collar yellow, on the pleurae partly black 

 and partly golden ; the bristles are black and very long. Haltères 

 black, with greyish knob. Scutellum dark red, with very long 

 marginal black bristles. Squamulae blackish. Abdomen black, red 

 on the sides of second, third and fourth segments ; first segment with 

 white hairs on the sides ; the silvery spots on the third segment are 

 well developed ; the hairs are black, those on the sides are disposed 

 in the shape of a fringe, and are all black. Spines of the female 

 genitalia yellow ; underside of the abdomen dark blackish, yellowish 

 towards the middle. Legs dark reddish, the tibiae paler ; bristles 

 black ; tooth of the hind claws very small, indistinct. Pattern of the 

 wing black, as in the following species ; but the black colour fills the 

 marginal cell and extends over half of the apical submarginal cell ; 

 small cross-vein without pellucid spot ; hyaline spot of the second 

 basal cell large ; the upper internal angle of the first subraarginal 

 cell is also blackened, while in the other species it is always hyaline. 

 Middle cross-band broad at the end, filling the half of the second, 

 and the whole of the third posterior cells ; basal cross-band distant 

 from the apex of the discal cell. 



The left wing of the single specimen examined shows only two 

 submarginal cells, the dividing veinlet being reduced to a stump. 



Type $ from West Nyasa, Chôma, 4000 ft., May 1909 

 {Dr. H. S. Stanmis). 



46. Litorrhynchus rostratics, Loew (1860). 



Distinguished by the conspicuous tufts of black hairs 

 on the sides of the thorax. The black basal band extends 

 to the apex of the anal cell, or ends only a little before it. 



