314 SYRPHID.1'. 



veins hardly perceptibly and narrowly suffused with pale brown ; 

 apical section of 4th vein considerably recurrent, nearly straight. 

 Thoracic sqiiain;e orange with dark orange margin and fringe; 

 halteres brownish-orange, clubs blackish. 



Lenyth, 13 nun. 



Described from a single $ from Ceylon, in the British Museum. 



240, Microdon carbonarius, sp. nov. 



(5 §, Head: in J, frons slightly narrowed in middle, at which 

 part it is less than one-third of the head ; face broader than frons, 

 widening a little below; both frons and face shining black, finely 

 juinctate \\\\\\ black pubescence. Eye-facets of equal size. An- 

 tennae black, 3rd joint two and a half times as long as 2nd and as 

 long as 1st. Occiput black, with a little black pubescence towards 

 margin on lower part and beliind vertex. In $ , frons and face 

 equally wide, with parallel sides ; distinctly wider than narrowest 

 part of frons in cS . Thorax shining black, finely punctate, bearing 

 short black pubescence ; seutellum similar, with two apical 

 distinct spines at tip ; sides of thorax shining black with black 

 pubescence. Abdomen in c? oblong, narrower behind, in 5 

 gradually narrowing from base of 3rd segment ; shining black, 

 finely punctate ; 5th segment turned quite sideways to the left ; 

 the large globular base of the genitalia conspicuous, brownish- 

 grey, with brow nish-orange appentlages. $ genitnlia apparently 

 normal. Venter black with black pubescence. Le(js moderately 

 shining black, pubescent ; knees brownish-orange; tarsi with some 

 yellow or browni-^h-orange pubescence ; pulvilli oi-ange. Wings pale 

 grey; veins very distinct ; halteres orange ; squamae dirty white. 



Lemjth, 10 mm. 



Described from two c? c5' and three $ § in the Indian 

 Museum from above Tura, Garo Hills, Assam, 3500-3900 ft., 

 15. vii-30. viii. 1917, including type S ', ix. 1917, type $ {Kemp). 

 This species bears a considerable resemblance to my unicohr, but 

 the scutellar spines will immediately distinguish it. Tyj^^ c7 in 

 the Indian Museum. 



241. Microdon apiformis, sp. nov. 



o . Bead : frons a little narrower in middle, at that point much 

 less than one-third of the head ; face a little wider than frons, 

 gradually widening to lowest part ; frons and face moderately 

 shining hlack with rather long bright chrome-yellow pubescence, 

 both finely punctate. Antennal prominence very small, shining 

 black, 1st and 2nd joints dark brown, 3rd black, two-and-a-half 

 times as long as 2iid and about as long as 1st, tip obtuse. Occiput 

 black, a little pale hair on lower part and behind vei'tex, middle 

 margin nearly bare. Thorax blackish, moderately shining, finely 

 punctate; side and hind margins, humeri and seutellum, rather 

 translucent pale yellowish-brow n ; whole surface with short, close 

 bright yellow pubescence. Seutellum with two distinct apical, 

 brownish-orange, short, obtuse spines. Abdomen finely punctate ; 



