84: DIPTERA OF AUSTRALIA, 



vein ; second submarginal cell one-third longer than the first 

 posterior cell, in contact with the discal ; discal cell septangular in 

 consequence of the sessile character of the second posterior cell. 



Hob. — Sydney and other localities in N.S.W, (Masters); 

 Waterloo Swamps, near Sydney, eleven specimens in March 

 (Helms and Skuse) ; Glass Mountains, Queensland (C. J. Wild). 



Obs. — Macquart taking his specimens to have come from N. 

 America, erroneously identified and described them as Ftilogyna 

 fuliginosa, Say, originally characterized by Say as a native of that 

 country, under the generic title Cteno2)ho7-a, but considered a Tipula 

 by modern authors. Loew discovered the error and suggested that 

 Macquart's species should be called P. Macquai'ti ; it had however, 

 been twice characterized and named as an Australian insect by 

 "Walker and Westwood three years previously to Macquart's 

 puVjlication. I cannot understand how Schiner could conceive 

 his P. picta to be distinct from this species, his description agreeing 

 almost word for word with that drawn up by Walker in 1835. 



^^ Second siibmarginal and discal cells not in contact. 

 Genus 6. Platyphasia, gen.nov.' 



First longitudinal vein joining near the base of the anterior 

 branch of second longitudinal ; the ultimate section of the branch 

 appearing as a continuation of the first longitudinal ; second 

 submarginal cell se{)arated from discal by the small cross-vein ; 

 second posterior cell petiolate. Front moderately broad, convex, 

 without a tubercle above the antennae. Rostrum as long as the 

 head; nasus wanting. Antennae 13-jointed in ^, the second to 

 eighth flagellar joints with a single, very long, branch on the 

 outer side. ^ genitalia of simple structure. 



The elegant insect for which the generic name is proposed is 

 certainly more closely allied to Ptilogyna than to any other known 

 genus, but may easily be distinguished by the peculiar character 

 of the antenna} (PL vi., fig. 30), the absence of a tubercle on the 

 front, the length of the first posterior cell and presence of small 



