595 



DIPTERA OF AUSTRALIA. 

 By Frederick A. A, Skuse. 



NEMATOCERA.— SUPPLEMENT IL 



(Plate XIX.) 



The present contribution includes descriptions of additional 

 species belonging to the families Mycetophilidae, Simulidae and 

 Bibionidse. Mycetophilidse : — (Lygistorrhma, gen. nov., I; Heter- 

 opterna, Sk., 1 ; Platyura, Meig., 3 ; Sciophila, Meig., 5 ; Neoem- 

 pheria, O.-Sack., 1 ; iStenophragma, gen. nov. (syn. Homaspis, Sk., 

 prceoc), 3 ; AcrocUcrania, Sk., 1 ; Clastobasis, gen. nov., 1 ; 

 Sceptonia, Winn., 1 ; Mycetophila, Meig., 1 ; Delopsis, gen. nov. 1 ; 

 Dynatosoma, Winn., 1 ; Brachydicrania, Sk., 1 ; and Syn2)lasta, 

 gen. nov., 1). Simulidae : — ( Simidium, Lat., 1). Bibionidae : — 

 (Plecia, Wied., 1 ; Dilojihus, Meig., 3 ; and Scatopse, Geoff., 1). 

 Neoempheria, Sceptonia and Dynatosoma are recorded for the first 

 time from Australia. Among the Bibionidae it will be noticed 

 that Plecia melanaspis, Wied., Plecia fulvicollis, Fabr., both 

 originally described from Java, and Scatopse notata, Linn., a well- 

 known European species, are found to inhabit Australia. Alto- 

 gether, five genera and twenty-six species are proposed as new. 



It is here necessary to direct special attention to the rectification 

 of an erroneous interpretation of the alar-venation in the Myceto- 

 philidfe, as exemplified in my former paper on this family (P. L.S, 

 KS.W., (2), III., pp. 1124-1222, pis. 31-32, 1888) j more particu- 

 larly as 1 have there promulgated the error not only in my 

 descriptions but in an attempt to translate Winnertz's system of 

 classification of groups and genera (V. z.-b. G. Wien, XIIL, pp. 

 656-665, 1865), with the substitution of Loew's terminology 

 (Mon. Dipt. N. Amer., I., pp. xv-xxiv., 162). The same mistake 



