Mr. C. G. Lamb on Exotic Chloropidse. 343 



papillre, which are inserted mainly on the lower edge. Pleura 

 shining- yellow, nietanotuin shining orange. 



Wings (fig. 1(1) absolutely clear, with palest yellow veins. 

 Halteres pale yellow. 



Legs all yellow except the claws. 



Abdomen somewhat oval, orange, with the Hollowing black 

 spots on each side: — a small one at lower angle of 3rd seg- 

 ment, a large triangular one based on distal edge of 4th and 

 occupying one-third the breadth and the whole of the side of 

 that segment, a smalhr similar one on 5th which does not 

 extend so far up side of segment. 



Size about 2 mm. 



S. Kiiodesia: Salisbury (G. A. K, Marshall, Camb. 

 Coll.). 



Siphon ella, Alcq. 



Siphonella robusta, sp. n. 



There is a fair series of a large strongly built insect of this 

 genus, which (like S. palposa) has strong palpi and a shortish 

 fleshy tongue. 



Head (top view) : — Eyes bare, frons shining chestnut- 

 brown, orange in front, the triangle shining black, with the 

 usual haii -borders, the base about half the cross vertical 

 breadth, the point about centre of frons. Face yellow ; an- 

 tenna yellow, with orbicular 3rd joint and an almost bare 

 arista; a very narrow but well-developed ridge separates the 

 lovese ; palpi protuberant, rod-like, bright orange. Side- 

 view : jowl deep, about ljr times 3rd joint, all orange ; it is 

 divided into two areas by a ridge from the back of the eye to 

 the front mouth-margin, the lower area being somewhat bent 

 in sideways to the side mouth-margin ; face somewhat hollow, 

 the frons and mouth being equally prominent, tongue dark 

 orange, moderately long, fleshy; small vibrissa. Hind head 

 all black. 



Thorax all very shining, with tiny well-defined punclures ; 

 in a good light some of these form two just perceptibly more 

 regular double rows along the d.-c. lines, the other punctuies 

 being profusely scattered over the rest of the dorsum in quite 

 irregular lines; hairs black, as are the calli and all the 

 bristles. Scutellum subtriangular, with slightly convex sides 

 and rather sharp point, the disc somewhat flattened, sha- 

 greened with larger shallow punctures, biistled like ti. ruji- 

 cornis, with two closely set, nearly parallel, strong terminal 



