^5 Memoirs of the Indian Museum. [Vol. Ill, 



thinks that it is probably a Rioxa, as already suspected by Osten-Sacken. But the 

 shape of the head is very different from that of Rioxa, and I think it better to make the 

 species the type of a new genus, called Diarvhegma. Type at Copenhagen. 



174. muUisfriga {Trypeta), Walker, 1859 (Proc. Linn. Soc, iii, 119, 142) from Aru Islands. 



Seems to be a form with plumose arista, allied to Rioxa. Type in London. 



175. **musae {Trypeta), Froggatt, 1899 (Agric. Gazette N. S. Wales, 501, pi. ii, f. 1-2, and Report 



1909, p. 123, p. vii, f. 1-3) from Australia. Is a Rioxa. Type in Sydney, Dept. of Agri- 

 culture. 



176. mutilloides (Dacus), Walker, 1859 (Proc. Linn. Soc, iii, 115, 132) from Aru Islands. Osten- 



Sacken, who has seen the type in London, says (1881, p. 461) that the present species is 

 not a Dacus and not a Trypaneid at all ; according to Hendel it belongs to Pseudepicaiista. 

 lyj. *mufyca {Trypeta), Walker, 1849 (List Dipt. Brit. Mus., iv, 1036) from East India. Placed 

 in Euleja by Walker ; it appears to be a Rioxa allied to vaga, Wied. Type in London. 



178. nebulosa {Urellia), Becker, 1907 (Mem. Acad. Sei. vSt. Petersburg, xii. 286, 51, pi. i, f. 2) 



from E. Tibet. A true Trypanea ; type at St. Petersburg. 



179. nebulosa {Dasyneura), Walker, 1849 (I^'st Dipt. Brit. Mus., iv, 1076) from unknown locality. 



Seems to be a true Oriental Badrocera ; type in London. 



180. nigra {Rioxa), Meijere, 1906 (Dipt. N. Guinea Exped., 95, 3, pi. i, f. 18) from N. Guinea. 



Seems to be congeneric with debeaufortii and helomyzoidss. Type at Amsterdam ? 



181. nigricans {Trypeta), Wiedemann, 1830 (Auss Zweifl., ii, 509, 53) from unknown locality. 



Seems to be an Acidia or an Aciura. Type at Vienna. 



182. nigrifascia {Trypeta), Walker, i860 (Proc. Linn. Soc, iv, 158. 196) from Macassar. A 



Ceratitinine with plumose arista and peculiar pattern of the thorax. Type in London. 



183. nigrilinea {Dacus), Walker, 1861 (Proc. Linn. Soc, v, 251, 71) from N. Guinea. Nota 



Dacus, and probably not a Trypaneid at all. Type in London. 



184. **nigripes {Urophora), Macquart, 1851 (Mem. Soc. Sei. Lille, 260 (131), 11, pi. 26, f. 13) 



from Tasmania. An Ortalid, congeneric with festacea. Type at Paris. 



185. mgropunctidata {Themara), Doleschall, 1858-59 (Nat. Tijdschr. N. Indie, xvii, 124, 83) 



from Amboina. Is a Sapromyzine, perhaps synonymous with Sapromyza frypetoptera , 

 picta or punctipennis. Type at Vienna. 



186. nivistriga (Helomyza), Walker, 1861 (Proc. Linn. Soc, v, 246, 57) from N. Guinea. Czerny 



in 1904, after examination of the type in the British Museum, has stated that this is not 

 a Helomyzid, but a Trypaneid, and I think that it is probably a Rioxa. 



187. notabilis {Ptilona), Van der Wulp, 1880 (Tijdschr. v. Entom. xxiii, 187, 46, pi. xi, f. 9-11) 



from Padang. Perhaps a Rioxa, according to Enderlein. Type at Amsterdam. 



188. nox {Rioxa), Rondani, 1875 (Ann. Mus. Civ. Genova, vii, 437) from Borneo. A true Rioxa. 



Type in Genova. 



189. obliqua {Xiria), Osten-Sacken, 1881 (Ann. Mus. Civ. Genova, xvi, 463, fig.) from Sumatra. 



This species has no lower fronto-orbital bristles, and therefore is perhaps allied to the new 

 genus Chaetellipsis, but the shape of the face and pattern of the wings are very different. 

 Westwood's figure of the type species shows lower fronto-orbital bristles. Type at 

 Genova. 



190. obsoleta {Trypeta), Wiedemann, 1824 (Anal. Entom, 53, 118, and Auss. Zweifl., ii, 499, 36) 



from Java. Seems a Tr3'paneid, with a peculiar wing-pattern, which however seems to be 

 like that of the Lauxanid genus Amphicyphns. Type at Vienna. 



191. obtrudens {Dacus), Walker, 1859 (Proc, Linn. Soc, iii, 116, 135) from Aroe. Osten-Sacken, 



who has seen the type in London, places it among the Ortalids of the Stenopterina group, 

 and Prof. Hendel says that it belongs to Pseudepicaiista chalybea, Del. 



192. optaiura {Helomyza), Walker, 1863 (Proc. Linn Soc, viii, 116, 40) from N. Guinea. 



Osten-Sacken in 1881 says that it is a Trypaneid allied to qnadrifera, Walk., and Czerny 



