PHORIDÆ FROM THE INDO- AUSTRALIAN REGION. 
551 
The characters of this species are such, that I was at first inclined 
to believe it simply a dimorphic form of crassimana, but as it is sepa¬ 
rable on good anatomical characters — form of palpi and appearance of 
front — I have thought it best to include it as a distinct species. 
Aphiochæta flava Fall. 
1823. Fallen, Dipt. Scancl., Phytomyzides, p. 7, 8. 
1901. Becker, Abh. Zool.-bot. Ges. Wien, I, p. 54. (European distribution.) 
1903. Brues, Trans. Am. Ent. Soc., XXIX, p. 362. (Occurrence and distribu¬ 
tion in America). 
There are specimens of this species from Friedrich-Wilhelmshafen, 
and Sattelberg, Huon Gulf, New Guinea. It has likely been introduced 
from Europe or America. 
Aphiochæta pulicaria Fall. 
1823. Fallen, Dipt. Suec., Phytomyzides , p. 7, 6. 
1901. Becker, Abh. Zool.-bot. Ges. Wien, I, p. 62. (European distribution.) 
1903. Brues, Trans. Am. Ent. Soc., XXIX, p. 371. (Occurrence and distribu¬ 
tion in America.) 
There are ten specimens, males end females from Botany Bay, Sydney, 
New South Wales, Australia (Biró, 2 November 1900). These are so similar 
to American specimens that I believe them identical. Since the species 
occurs in England, it is quite probable that it has been introduced into 
Australia on shipboard. 
Aphiochæta pusilla Meig. 
1830. Meigen, Syst. Beschr., VI, p. 218, 19. 
1901. Becker, Abh. Zool.-bot. Ges. Wien, I, p. 63. (European distribution.) 
There is a single female in the collection wdiich probably belongs 
to this species. It is from Sydney, New South Wales, Australia (Biró, 
20. October 1900). 
Plastophora nov. gen. 
Third vein of wings simple ; four anterior frontal setæ proclinate ; 
tibiæ without external macrochætæ ; spurs of four posterior tibiæ well 
developed ; antennæ oval, with dorsal arista ; ovipositor of female greatly 
lengthened. 
Body stout and robust, with the habitus of Phora; abdomen very 
large and legs stout, especially the posterior pair. Wings of moderate 
