South African Chironomidae (Dipterd). 263 



longitudinal line, distal branch a little wider, glabrous on the external 

 border where it bears strong seriate setae. 



Length : $ , 6 mm. ; 5 , 3'~)-4 mm. Cape Town. (L. Peringuey.) 



GEN. CHIEONOMUS, Meig. (TENDIPES, Meig). 



The following is a synoptic table of the characters of the six species 

 here described : 



1. Antennae 14-jointed, forceps with the terminal joints non-arcuate, but in ' an 

 elongated ellipse, and without vows of setae at the end, fore tarsus not 



hairy lamprogaster, n. sp. 



Antennae 12-jointed, forceps with the terminal joints arcuate and provided with 

 seriate setae on the median side of the apex. 2. 



2. Fore tarsus hairy, that is to say provided with long erect hairs. 3. 



3. Hairs of the fore tarsus long and thick, tergites brown with 4 white dorsal 



spots tetraleitcits, n. sp. 



Hairs of the fore tarsus long but not dense, tergites of a different colour. 4. 



4. Wings slightly smoky and iridescent, with numerous hyaline spots. . irirnlor, n. sp. 

 Wings hyaline, without spots. 5. 



~>. Bands on mesonotum brownish black, upper appendages of the forceps widest 



at the middle cafinirinx, n. sp. 



1 Sands of the mesonotum ferruginous, upper appendages of the forceps sub- 

 linear c(i]n'inti.i, n. sp. 



CHIUONOMUS (TENDIPES) TETRALEUCUS, n. sp. 



$ $ . Whitish, palpi brown black, long, scape black, fiagellum 

 fulvous, 6th joint in the female brown black, mesonotum pruinose 

 with 3 shortened fulvous bands, the lateral ones end behind in a 

 large spot situated against the hind border, 1st abdominal segment 

 yellowish, the following segments brown, all with 4 dorsal opaque 

 white patches, the 2 smaller of which are set against the anterior 

 border, the other 2 are behind, 1 on each side of the median line, 

 they reach the hind border on segments 4 and 5, but they are 

 confluent on the other segments, the whole of the 7th and 8th tergite 

 is opaque white and pruinose, forceps yellowish ; in the female the 

 spots on the abdomen are less well denned. Frontal lobes distinct. 

 Antennae 10-jointed in the male, the ultimate joint more than 

 4 times the whole of the preceding joints, 3-11 four times as thick as 

 long, plume fulvous. Antennae in the female 6-jointed, the ultimate 

 one more than twice as long as the antepenultimate, narrowed in 

 the centre, 3-5 elliptical with the neck slightly longer than thick. 

 Pronotum bilobate. Mesonotum glabrous. Scutellum with dense 

 whitish hairs. Wings hyaline, transversal black, the bifurcation of 

 the postical situated under the transversal. Pore metatarsus of the 



