igoy-] Records of the Indian Museum. 129 



0. diffusa Wlk., 1854. 



List. Dip. Brit. Mus., v, 53. 



9 Java, Sumatra. I am in much doubt as to the limits of this 

 species. 



0. claripennis Thoms., 1868. 



Eugenie Reise, 456. 



h Manila. Said to be near Macquart's albipennis. 



0. lutatius Wlk., 1849. 

 Ivist. Dip. Brit. Mus., iii, 532. 



$ Malacca. 



A 5 from SiHguri, N. Bengal, in the Indian Museum dated 

 30th June 1906 is undoubtedly this species. The legs are all 

 yellow, whereas Walker says " hips " black. 



0. consobrina Macq., 1847. 



Dip. Exot. Supp. 3, 16 ; pi. i, 8. 



^ Java, Sumatra. Macquart's diagram of the antenna shews 

 it rather thicker than is usual in this genus. 



0. ochracea mihi, sp. no v. 



'b Calcutta. Vertex and front, shining black ; lower part 

 of head, yellowish white ; mouth black ; eyes practically, but 

 not absolutely contiguous just above frontal triangle, diverging 

 thence to vertex. Antennae brown, 3rd joint black, the ist joint 

 a little longer than the 2nd. Thorax shining, dark aenus black, 

 with sparse verj^ short gold hair. Scutellum pale, base black, 

 spines small, pale yellow. Abdomen in life — peach colour, after 

 death — pale ochreous tawny, with a dorsal row of 4 black spots, 

 of which the basal one is largest and triangular, the 2nd very 

 small and round, the 3rd large and transversely oral, the 4th 

 much smaller and of the same shape. Belly unicolorous, the last 

 two dorsal spots being visible from below. Legs pale yellow tawny, 

 all the femora with a broad brown ring in the middle ; posterior 

 tibiae and upper side of posterior tarsi dark brown. Wings quite 

 limpid, veins invisible, except along the fore border. Long. 4 mm. 



Described from 2 'b 'b in the Indian Museum Collection (in- 

 cluding the t3^e specimen) and 2 'b 'b in my own Collection — all 

 taken in Calcutta. 



0. solennis Wlk., 185 1. 

 'b East India. Ins. Saunds. Dip., 79. 



