144 DIPTERA OF AUSTRALIA. 



Genus 4. Lestremia, Macquart. 



Lestremia, Macquart, Dipt, du Nord de la France I., 1826, 

 p. 173; Meigen, S.B. VI., 1830, p. 308 ; Rondani, ll''^ Mem. 

 Parma, 1840 ; {Lestremia, Jlimosciara, and Yposataea) Prodroiuus 

 I., 1856, p. 198 ; Zetterstedt, D.Sc. X., 1851, p. 3767 ; Walker, 

 LB., III., 1856, p. 57 ; O.-Sacken, Mon. Dipt. N. America, 1862, 

 p. 178; Schiner, F.A. II., 1864, p. 413; Winnertz, V. z.-b. G. 

 Wien, 1870, p. 30. 



Antennae moniliform, verticillate ; in the ^ 2- +14-, in the 9 

 2- + 9- to 2- + 10-jointed ; tlie joints in the ^ almost ovate, pedi- 

 celled, in the 5 more cylindrical, with short pedicels. Wings 

 large, moderately broad, with rounded apex, and prominent 

 posterior angle. First longitudinal vein very short ; second 

 longitudinal vein .short, running rather close to the costa, joining 

 the border much before the apex of the wing ; third longitudinal 

 vein with a very long fork ; cross-vein small, beyond the middle 

 of the first longitudinal vein (PI. iii., figs. 23 and 24). 



Obs. — A few European and American species only are known. 



II. Ocelli Wanting. 



Genus 5. Cecidogona, Loew. 



Ceddogona, H. Loew, Stett. E.Z. 1844, p. 324; Walker, LB. 

 III., 1856, p. 58; O.-Sacken, Mon. Dipt. N. America, I., 1862, 

 p. 178; Schiner, F.A. II., 1864, p. 413 {Lestremia); Winnertz, 

 V. z.-b. G. Wien, 1870, p. 35 {Lestremia). 



Antennae in the 9 2--1- 9-jointed; joints verticillate, with very 

 short pedicels. Wings tolerably broad, with rounded apex and 

 posterior angle. First longitudinal vein very short ; second 

 longitudinal vein reaching the margin close to the apex of the 

 wing ; branches of the third longitudinal vein long, almost 

 parallel to one another ; cross-vein very oblique. 



Ohs. — As far as I am aware, Loew's type of the genus, Cecido- 

 gona carnea, described from Europe, is the only known species. 



