94 SYRPHID^. 



the brownish costal cell, though both characters are merely normal 

 ones intensified. The size is unusual, though there is an inter- 

 mediate-sized 2 about 12^ mm. long in the British Museum 

 from Coonoor, S. India. 



Wiedemann described the femora as black at the extreme base, 

 but this seems the exception rather than the rule. Walker's 

 ■cranapes is synonymous, the synonymy having been kindly con- 

 firmed for me {in litt.) by Mr. Edwards, though I have since 

 examined the type, a 2 • S- mmichis, Walk., is, judging by 

 the unique type S in the British Museum, from India, also 

 synonymous. A comparison of Bigot's type of triUmhatus ( d" ) 

 proves tliis also to be identical. 



Three c? c? in the British Museum apparently represent an 

 undescribed species with the general facies of confrater, but 

 differing in tlie important character of possessing distinctly 

 pubescent eyes. The anterior femora have the basal tliird or more 

 black, the hind pair have the major portion blackish, with paler 

 bases and tips, and the apical half of the hind tibiae are black or 

 blackish. Taken in company with the 1 6 and several 2 2 

 in the same collection recorded above fi'om the Ivhasi Hills 

 .( Chennell). 



Type: the- species was described by AViedemann from 

 Trentepohl's collection, from New Guinea, and is also recorded 

 from Sumatra and China. 



75. Syrphus assimilis, Macq. 



Syrplms assimilis, Macquart, Dipt. Exot., Suppl. 1, p. 135 (1846). 



" S • Near S. ribesii. Face yellow, with whitish tomentum, 

 central bump yellow. Front wholly black, with grey tomentum. 

 Antennae with first two joints tawny (3rd missing). Scutellum 

 vellow. Under side of thorax between fore and middle legs green. 

 Abdomen with broad yellow complete bands on hind borders of 

 segments, each slightly overlapping the following segment. 

 Venter wholly yellow. Legs yellow, fore legs brown, including 

 tarsi. Wings a little yellowish, mediastinal cell yellow ; venation 

 as in ribesii. 



" India, Bigot collection. Length 5^ lines." 



Genus XANTHOGRAMMA, Sch. 

 Xantho(/ramma, Scliiiier, Wien. Ent. Monatschr. iv, p. i^lo (18G0). 



Genotype, Syrplms oj-naiits, Meig., as Musca pedissequua, Harr. ; 

 by Williston's designation. 



Differing from Syrplius in the conspicuous yellow side lines to 

 the thorax and distinct yellow markings on the pleurce. Eyes 

 quite bare. Abdomen relatively flat, about as broad as thorax, 



