396 Mr. C. G. Lamb on Exotic Chloropidse. 



specimen is in only moderate condition, but the bristles are 

 normal as far as they can be seen. 



Thorax all entirely black and shining, with barely visible 

 rows of tiny hairs, such as occur in other Oscinids ; main 

 bristles normal, where present. 



Wings as figured (fig. 27), slightly browned, with brown 

 veins; from the end of 2 to that of 4 the wing has a some- 

 what darker brownish border. Halteres yellow. 



Legs long, the hind pair quite exceptionally so, the femur 

 being about as long as the abdomen (excluding the ovipositor) ; 

 the tibia is about f of the femur in length, and the tarsus 

 equal to it ; in colour pale orange, except that the front and 

 middle pair are slightly suffused distally on the tarsi ; the 

 middle pair has a black spot on tip of femur ; the hind femur 

 is blackened for the apical third, the tibia for its distal two- 

 thirds and is so far a little swollen, the tarsus all black. 



Abdomen parallel-sided, rather narrow, somewhat flat- 

 tened, shining black, with a red tinge owing to the pale 

 orange venter showing through the thin chitin. The ovi- 

 positor is long, triangular in profile, forming a jointed tube 

 about half the length of the abdomen proper ; in colour it is 

 brown. 



Length, without ovipositor, 3 mm. ; wing about 2§ mm. ; 

 hind leg nearly 3 mm. 



Natal: Durban (F. Mutr, Camb. Coll.). 



Oscinis bistriata, sp. n. 



Head (top view) : — Mainly dull yellow with tiny black 

 hairs ; triangle slightly raised, with the boundaries extending 

 to the vertical angles behind the eyes, sides concave, point 

 about halfway from ocellus to Irons ; the fore part (including 

 the slightly raised ocellar hum})) is black, rather dull, the 

 side areas between this and the boundary orange ; this 

 colour extends over the hind head a short distance, and the 

 bristles are inserted on it just over the vertical ridge ; the 

 black of the ocellar patch also extends behind between the 

 orange patches, and merges into the lower black part of the 

 hind head. Eyes with very short but strong pubescence. 

 Face orange, with the frons overhanging the antennal bases, 

 the antenna with orange 2nd joint, the 3rd black-brown, but 

 with a narrow border of yellow round the edge inside ; arista 

 brown, with just perceptible pubescence. Side-view (fig. 28) : 

 projecting frons yellow, as is the jowl, the latter orange 

 behind the eye. 



