APPENDIX I 357 



(6) Sarcophaga, sp. No. II. 



Both are common species, frequenting the dead bodies of 

 rats. 



(7) Ehinia test acea, Rob.-Desv. 



Few examples seen, mostly upon the herbage of the sea- 

 ward side of the islands. 



(8) Pycnosoma flaviceps, Macq. 

 The commonest fly in the atoll. 



(9) Ophyra chalcogaster, Wied. 



Micropezid^. 



(10) Nerius lineolatus, Wied. 



HlPPOBOSCID^, 



(11) PSEUDOLFERSIA SPINIFERA, Leach. 



Usually swarming over the plumage of the Frigate-birds. 

 On Keeling atoUon, where these birds breed in thousands, the 

 fly is often seen crawling about the nesting bushes. 



CULICID^. 



(12) The Mosquito of the islands is a species of Stcgomyia 

 and it exists in great numbers. 



COLEOPTERA. 



Species determined by C. 0. Waterhouse, P.E.S. ; 

 C. J. Gahan, M.A., F.E.S.; and G. J. Arrow, F.E.S. 



Brachelytra. 



(1) Aleochara, sp. This genus is not represented on 

 Christmas Island. 



