•i48 LIST OF DIPTERA. 



6. Pterodontia Mellii. 



Nigra ,• abdomen texlaceum, basi vittaqtie dorsali integra nxgria ; 

 pedes antici teslqcei hrun nigri, posterioresuigri tarsis testaceit ; 

 ala hyaiince, casta testacea. 



Plerodonlia Mellii, Erichs. Entnmogr. i. 163, 2. 

 Liverpool Plains, New Holland. 



7. Pterodontia Macquartii. 



Atra ; scutellum abdominisque latera rufa; pedes Jiavi, femoribua 

 anticis nigris. 



Pterodontia Macquartii, Westw. Tram. Ent. Soc. Lond. v. 97. 

 Pterodoniia flavipes, Macq. Dipt. Exot. i. 2, 17o. 

 Plerodomia Mellii, Var. ? 



New Hollaiul. 



Genus 15. ACROCERA. 



Corpus minoris niajinitudinis, suhglobosum, pil)bum, breviter 

 pubesceiis, nijjricans. Oculi glal)ri, sub aniennis coutii^ui. Ocelli 

 Ires. Proboscis brevis. Aulennaj biarliculats, vertice inserts. 

 Prothoracis lobi doi-sales rcmoti. Alarum vena subapicalis furcata. 



Acrocera, Meig. Illig. Mag.; Klass. 147; Latr.; Macq.; Zett. ; 



Erichs. 

 Syi-])bus, p., Fabr. Ent. Si/st. ; Panz. 

 Heuops, p., Fabr. Sijbt. Antl. ; Meig. Klass. ; Zett. 



Costal vein ending at a little in front of the tip of the wing ; 

 subcostal ending at beyond half the length ; mediastinal ending at 

 a little beyond the subcostal ; radial ending at about four-fifths of 

 the length : first branch of the cubital ending at a little in front of 

 the tip of the wing ; second branch ending at much behind llie tip ; 

 one externo-niedial vein reaching the border; anal not united to 

 the subanal. 



