126 niPTERA OP AUSTRALIA, 



425. Pachyrrhina Australasia, sp.n. (PI. v., fig. 20.) 



(J. — Length of antennae 0"210 inch ... 5'33 millimetres. 



Expanse of wings 0450 x 0-100 ... 11-43 x 2-54 



Size of body 0-480x0-060 ... 12-18x1-54 



2- — Length of antennae 0-130 inch ... 3-30 millimetres. 



Expanse of wings 0-500x0-120 ... 12-70x3-04 



Size of body 0-640x0-070 ... 16-25x1.77 



Fulvous, the head and thorax usually paler yellow. Nasus 

 brownish. Flagellar joints of antennae brown or black. Thorax 

 with three prominent .shining black stripes ; intermediate broader 

 at the pronotum, extending to the suture ; lateral ones from 

 humeri to scutellutn, interrupted at suture. Halteres yellow. 

 Abdomen : first five segments banded posteriorly with black ; 

 sixth and seventh entirely black ; genitalia brownish-fulvous. 

 Coxae and femora fulvous, the tips of the latter deepening into 

 dark brown or black. Tibiae brownish or dusky-fulvous, the tips 

 dark brown or black. Tarsi dark brown or black. Wings pellucid, 

 with a greyish tint ; beautifully iridescent ; veins deep brown or 

 black ; stigma fuscous, distinct. Venation as in the preceding 

 enumeration of structural characters. 



Hab. — Barron and Mulgrave Rivers, N. Queensland <^Froggatt) ; 

 'Nerang, Queensland (C. J. Wild), one specimen in Coll. Queens- 

 lancl Museum ; Lord Howe Island, N.S.W. (Saunders). April to 

 July. Fifteen specimens. 



b. Genitalia inconspicuous in both sexes. 



Genus 17. Macromastix, Osten-Sacken. 



Tipula, Swederus, Act. Holm. 1787, p. 286 ; Megistocera, 

 Westw., Zool. Journ. V. p. 451, 1830 ; JIacrothorax (prmoc), 

 Jajnnicke, Al)h. Senck. Natur. Ges. Frank. VI. p. 319, 1867 ; 

 Macromastix, Osten-Sacken, Studies on Tipulidte, I. p. 185, 1886. 



First longitudinal vein joining anterior branch of second longi- 

 tudinal vein near the base ; prtefurca usually longer than great 



