ADSTRO-MALAYAN DIPTERA 447 



species ; but the upper occipital orbit appeared to me narrower, 

 the front Hkewise etc. 



A small female specimen from the Aru Islands (Wokan, 1873, 

 Beccavi) resembles, R. pretiosa very much, and may be a va- 

 riety. It is only II mm. long (the other is fully 16-17 mm.), 

 the coloring although brilliant, is a paler metallic green , the 

 black thoracic stripes are very distinct, but narrow, the second 

 abdominal segment has only a small black triangle in the mid- 

 dle of the hind margin, the remainder of this margin being 

 metallic green ; the pleurae show a large , white hoary spot , 

 below the humeri. 



Rulilia mirabilis Guér. Voy. de la Coq. Zool. 297, Tab. 21 , 

 f. 2 (Offak, N. Guinea). 



Syn. Kutilia pluixiicornis Macq. D. E. H, 3. 82, Tab. 9, f. 8 (Synonymy in 



Macq. 1. c. ler Suppl. 174). 



One 9 > Varbusi, N. Guinea (Beccari 1875). 



The specimens of this species in the Brit. Mus. (Aru Isl.) 

 have the green stripes on the abdomen more deeply sinuate. 

 Rut. fervens Walk. 1. c. Y, 288 (Batchian) looks very much 

 like this species ; only the abdomen has more reddish coppery 

 reflections. 



Rutilia spec. One male ; Gilolo (Coll. Bruijn, 1875). I have 

 not been able to identify it with any description, nor have I 

 seen anything like it in the Brit. Mus. 



Echinomyia sp. Four specimens; Mt. Singalang, Sumatra, July 

 1878 (Beccari). 



Prosena pectoralis "Wk. J. Pr. Lin. Soc. VII, 226 (Waigiou). 

 One specimen; Dorei Hum, New Guinea, Febr. 1875 {Beccavi). 



Description vague; but it agrees as far as it goes; I did not 

 compare the type. 



