DIPTERA OF AUSTRALIA. 



By Frederick A. A. Skuse. 



Part VIII.— THE TIPULID^ LONGIPALPL 



(Plates iv-vi.) 



The T1PULID.E LONGIPALPI are distinguished from the brevi- 

 PALPi by several more or less prevailing characters. The 

 insects themselves are usually lai-ge, and commonly keep the 

 wings divaricate in repose. The terminal joint of the palpi is 

 as a rule long and tlagelliform. The antennse are normally 13- 

 jointed. The rostrum is generally prolonged and usually provided 

 with a more or less distinct pointed nasus at the upper extremity. 

 The ^ genital organs ai-e often very complicated. The wings are 

 usually traversed by a distinct fold transversely across the apical 

 portion ; the venation, which is not subject to very much varia- 

 tion, is characterized by the auxiliary vein terminating in the iirst 

 longitudinal vein ; the absence of the sub-costal cross- vein ; 

 the first longitudinal vein ending in the second longitudinal, 

 and connected, near its tip, to the costa by a cross-vein : this 

 cross-vein together with the anterior branch of the second longi- 

 tudinal form a small rhomboid cell (which seems characteristic of 

 all the genera except some included in Dolichopezina) ; and 

 lastly, the posterior intercalary vein originates so far back as to 

 usually bring the discal cell in not more than punctiforra contact 

 with the fifth posterior cell. 



About fifty species belonging to this division of the Tipulidae 

 are herein described, nearly two-thirds of the number being now 

 characterized for the first time. The following is the summary 

 and arrangement of the genera and species : — Dolichopezina, 



