250 Mons. J. M. F. Bigot — Catalogue of Oriental Diptera. [No. 3, 



c. Brown variety. 



This resembles the last, but there is little or no trace of the blue 

 mottling on the ventrals which are almost uniform brown. Two ex- 

 amples from the Andamans in the Indian Museum. 



d. Uniform or banded variety. 



Colour uniform light reddish or dusky or with regular white 

 transverse bands ; scales in 21 rows. 



This is the variety described by Stoliczka under the name of T. 

 mntalilis, and is found on both the Andamans and Nicobars. 



e. Green above, lighter below, resembling the typical variety found 

 in Assam and Bui-ma, scales in 21-25 I'ows. 



This variety occurs on the Andamans, Cocos and Nicobars. 

 All the above varieties with the exception of the first seem to be 

 referable to T. gramineus vsXhev than to T. ptirpureomaculatus. 



EXPLANATION OF PLATE VI. 

 Fig. 1. Ahlabes stoliczJcae, sp. nov. x 2. 



2. Simotes woodmasoni, sp. nov. 



3. Zaoccys tenasserimensis, sp. nov. 



4. Tropidonotus pealii, sp. nov. 



5. Tropidonotus nicoharicus, sp. nov. x 2. 



XL — Catalogue of the Diptera of the Oriental region hy MoNS. J. M. F. 

 Bigot. Part I. Communicated hy the Superintendent of the 

 Indian Museum.* 



[Received Feb. 26tli, 1891. Eead Marcli 3rd, 1891.] 



Order DIPTERA. 

 Suborder HOMALOCERATI. 

 J. Bigot, adhuc ined. 



Division Nematocerat^. 

 J. Bigot, adhuc ined. : Nematocera, Meigen, St/st. Beschr., i, 1818. 



Family QULICID^. 



J. Bigot, adhuc ined. : Culiciforraes, Meigen Syst. Beschr. i, 1818 : CulicidEe, 

 Latr. Fam. Natur. 1825 : Macquart, S. a Buff. Dipt, i, 1834 : Culicin^, 

 Zetterst., Iws. Laponica: C ulioinae Rondani, ProcJr. i, 1856: Cnlicina, 

 Scbiner, Faun. Austr. Fliegen 1864, 



* This Catalogue was drawn up by M. Bigot at the suggestion of the late Mr. 

 Atkinson and was to have formed part of the series of Catalogu.es of the Insecta 

 of the Oriental Region, which have been discontinued since Mr, Atkinson's death. 



