AUSTRO-MALAYAN DIPTERA 475- 



mere lines and do not reach the scutellum. Scutellum blackish- 

 metallic green, opaque. Abdomen metallic green, shining, with 

 some purple reflections ; the base is more or less yellowish , 

 with yellowish hairs. Legs black ; proximal half of the front 

 and middle femora yellow. The wings have a brown margin 

 along the costa , which sends out a short branch, covering the 

 anterior crossvein ; the rest of the wing is tinged with pale 

 brownish-yellow ; the first basal cell and a small space on the 

 distal side of the anterior crossvein, are more hyaline. 



Hah. Hatam, New Guinea, September 1872 (L. M. D'Alberiis). 

 Five male specimens. 



Achias latividens Walk. 1. c. Ill, 121 (9) and VII, 229 (c^?) 

 (Aru Isl.*^' and Waigiou) ; Westwood, 1. c. fig. 6. 



One 9; Andai, New Guinea, August 1872 (L. M. D'Alberiis). 



Agrees with M.'* Westwood's figure, as well as with a male 

 specimen , communicated to me by G. H. Verrai Esq. , in the 

 direction of the brown stripes on the face and in the coloration 

 of the wings. The whole apex, as far as the posterior crossvein, 

 is slightly tinged with brown ; the crossvein itself is but a 

 little darker. The horns of the male are about half as long as 

 in longividens, to which, otherwise this species bears the closest 

 resemblance. 



Achias dacoides Walk. J. Pr. Lin. Soc. VIII, 133! {Sal- 

 'ivatti) 9 . 



Syn. achias aspiciens Walk. 1. c VII, 229! (Waigiou) o'. 



One 9, Dorei Hum, Beccaria Febr. 1875. 



I believe that both species, described by M."^ Walker, are sy- 

 nonymous , and that the specimen before me belongs to the 

 same species. The types show some reddish stripes on the tho- 

 rax, which are also mentioned in the description, but which do 

 not exist in my specimen. Although this species is much more 

 slender than the others , and although its tegulae are smaller , 

 the structure of the head and of the anal cell prove its close 



