40 Mr. C. G. Lamb on Exotic ChloropidEe. 



black central stripe, sometimes getting browner behind, and 

 extending forward right on to the prothorax ; each side is a 

 grey pollinated line of ochreous tone, which is moderately 

 distinct till just before the scutellum, where it suddenly 

 becomes very marked and forms an elongate spot at each 

 side of scutellar base ; similarly in front, just at level of 

 calli, it again forms bright long spots ; beyond these grey 

 lines the dorsum is as the mid-line, but is more darkened in 

 front of the cross-suture, in one case quite black there. 

 Calli shining, rather orange. Pleura all somewhat shining 

 orange, with brownish boundaries to the sclerites ; the black 

 spot over middle coxa may or may not be present. Scu- 

 tellum darkened orange, in one case paler in centre ; terminal 

 bristles long and crossed, and a few smaller marginal ones. 



Wings clear with brown veins, 2nd ending about § down 

 costa between 1 and 3. Halteres white, with orange stalks. 



Legs orange, with front tibia and tarsus a very little 

 darkened. 



Abdomen yellowish at sides, the dorsum forming a broad 

 darkened continuous stripe. 



Size (ex. antennae) just under 2 mm. 



Cam. Coll., Chirinda Forest, S.A. (G.A.K.M.). 



The second species is represented by but a single specimen, 

 but it is vei'y distinct from all the others. 



Steleocerus flavipes, sp. n. ■ 



Head (top view) : — About 1\ times as long as broad ; 

 from vertex to the slightly prominent frons it is all bright 

 yellow ; the triangle is very shining, especially along its 

 concave side "boundaries ; these are slightly depressed, and 

 the hair-lines on them are exceptionally well marked ; the 

 sharp-pointed apex projects between the somewhat swollen 

 anteunal pits; basally it does not quite occupy the whole 

 vertical breadth; eye-margins narrowly silvery, especially in 

 front; ocellar circle black ; hind head absolutely pale except 

 for two excessively narrow dark lines from vertex. Side 

 view : — The angle between frontal and facial planes is about 

 75°; autennse all quite pale yellow, except that the 3rd joint 

 is orange just, at the insertion of the black arista, which is 

 more elegantly a^d regularly haired than in the other 

 sj)ecies. Jowls pale ycliovv ; palpi pale. In front the 

 mouth-margin is seen to be very narrowly darkened. 



Thorax reddish orange, with the following greyish polli- 

 nated stripes : — Centrally a short narrow one extending but 



