54 DIPTERA OP AUSTRALIA, 



genus Dolichopeza, Curtis (syn. A^jeilesis, Macq.), 8, and Tany- 

 premna, O.-Sack., 1 ; Ctenophorina, Ctenogyna, Macq., 1, and 

 Clytocosmus, gen.nov., 1 ; Tipulina, Sect. I. No nasus to 

 rostrum, — Ptilogyna, Westw., 1 ; Platyjyhasia, gen.nov., 1 ; 

 Plusiomyia, gen.nov., 5 ; Habromastix, gen.nov., 3 ; and Pliyma- 

 topsis, gen.nov., 1 : Sect. II. Nasus to rostrum, — Semnotes, 

 Westw., 2 ; Leptotarsihs, Guerin, 5 ; Acracantha, gen.nov., 3 ; 

 Ischnotoyna, gen.nov., 3 ; Holorusia, Loew, 2 ; (?) Tipula, Linn., 

 3; Pachyrrhina, Macq., 1 ; and Macromastix, O.-Sack., 6. 



Apeilesis is considered identical with Dolichopeza, the difference 

 to be found in the male holding-forceps not being regarded as of 

 suiJicient importance to split up the species into two genera, but 

 possibly of some subordinate value. Ctenogyna has manifestly no 

 relationship to Ptilogyna, inasmuch as it possesses a nasus and the 

 general characteristics of the Ctenophorina. Clytocosmus (g.n.), 

 also referred to this section, is a very striking form, apparently inter- 

 mediate between the the Ctenophorina and Tipulina. Among 

 those genera provisionally included in Tipulina, several interesting 

 forms are described. Ptilogyna ramicornis, Walk., has been cha- 

 racterized under live different specific names by former authors. 

 Plusiomyia (g.n.), is suggested for the reception of Walker's 

 Pedicia gracilis, afterwards described by Westwood as Ozodicera 

 longijiedalis : and four new species are added, two doubtfully, for 

 they exhibit certain peculiainties not quite in accordance with this 

 genus. Platyjihasia (g.n.) seems to be intermediate between 

 Ptilogyna and Plnsiomyia. The fresh genera Habromastix and 

 Fhymatopsis contain species which certainly seem related to those 

 embraced in the three preceding, by the simple structure of the 

 male genital organs, and in wanting a nasus to the rostrum, but 

 exhibit some inconformities ; the antennae, which are very long 

 in Habromastix, are in no case pectinate or even serrate. Among 

 the species having a distinct nasus to the rostrum, none have been 

 found to conform to the genus Tipula (sensu st7'ictoJ ; how- 

 ever, three old-described species are provisionally set down under 

 that title until more complete information about them is forth- 

 coming. Three species with serrate or sub-serrate antennae 



