414 APPENDIX. 



Baccha sappMrina, Wied. {ante, p. 122). Add : rare in Ceylon ; 



occurs round Trincomalee. 

 Baccha triangulifera, Aust. {ante, p. ]24). Add: Huldamulla, 



Ceylon, 10. vi. 1892. 

 Baccha amphithoe. Walk, (ante, p. 126). Add : uncommon in 



Ceylon. 

 Rhingia binotata, Brun. {ante, p. 131). Sack describes a $ from 



Formosa (Arch. Xaturg., Abt. a, 1921, p. 266). 



Graptomyza brevirostris, Wied. {ante, p. 138). Add : Henerat- 

 goda, 7. ii. J 892 ; Kaudy, 28. vi. 1892 (both Ceylon). 



Eristalis niger, Wied. {ante, p. 163). Add : Peradenij^a, Ceylon, 

 17. V. 1892. 



Eristalis simiilatus, sp. n. {ante, p. 177). This species may 



possibly be synonymous with cerealis, Fabr. 

 Eristalis obsciiritarsis, de Meij. {ante, p. 190). Add : Ceylon, 



various localities ; iii, ix, x, xii. Sack records this species 



from Formosa. 

 Eristalis multifarius, ]F«?/i,-. (aw^i?, p. 194). Add: not uncommon 



in Ceylon; Peradeniya, 28. iv. 1891, 22 and 29. v. 1892 ; 



Andankullam, 30. xii. 1890 ; Anuradhapura, 30. xii. 1890. 



Megaspis crassus, Fahr. {ante, p. 197). Add : rare in Ceylon ; 

 Buddegama, 2. v. 1892. 



Megaspis errans, Fahr. {ante, p. 199). To the list of synonyms 

 add: Eristalis plistoanax, Walker, List Dipt. Brit. Mus. iii, 

 p. 628 ( 18-19), teste Major Austen, in MS. note. E. plistoanax 

 was described from the Philippines. To the localities add : 

 very common in various places in Ceylon. 



Megaspis zonatus, Fahr. {ante, p. 203). Add : only one example 

 was seen in Ceylon by Colonel Terbury. 



Helophilus curvigaster, Macq., 1842 {ante, p. 206). This species 

 proves to be synonymous with Merodon interveniens, Walk., 

 1860 {ante, p. 212). Macquart's name has priority. 



Helophilus bengalensis", Wied. {ante, p. 209). Add : Ceylon, very 

 common; Trincomalee, Kanthalai, and other places, i and 

 viii-x. 



Helophilus quadrivittatus, Wied. {ante, p. 210). Add : Kan- 

 thalia, 12. viii. 1891 ; Peradeniya, 30. iv. 1891 (both Ceylon). 



Merodon interveniens. Wall-, {ante, p. 212). This proves to be 

 synonymous with Helophilus curvigaster, Macq., and the ]iame 

 curvigaster is older than interveniens, as stated a few lines 

 above. A further synonym is : Teuchomerus orientalis (Bru- 

 netti). Sack, Arch. Natarg. 1921, Abt. a, p. 266. Sack makes 

 orientalis, Brun., the type of his genus Tevcliomerus. Possibly 

 the African Eristalis vilis, Wied., and Eristalis crassi^^es, 



