92 DIPTERA OF AUSTRALIA, 



403. Plusiomyia inornate, sp.n. 



$. — Length of antennse 0.180 inch ... 4-56 millimetres. 



Expanse of wings 0-630 x 0-150 ... 16-00x3.81 



Size of body 0-760x0-090 ... 19-32x2-27 



Head dull plumbeous; rostrum, suctorial labella and palpi brown ; 

 joints of the scapus fulvous, the first long, nearly four times the 

 length of first flagellar joint : flagellar joints brown, with dusky 

 branches, first with a short tooth of a branch beneath the apex ; 

 second to seventh with a pair of branches laterally at the base, and 

 a minute tooth of a branch a little beyond the middle beneath ; 

 longest lateral branch scarcely twice the length of the joints ; six 

 short cylindrical terminal joints. Thorax brown, dull, with indistinct 

 indication of longitudinal stripes ; pronotum and lateral margin 

 ochreous or greyish, with an indistinct brown line on pleurso from 

 behind head to origin of wings ; pleura9 light ochreous-brown, 

 somewhat hoary ; scutellum and metanotum brown, the posterior 

 border of latter paler. Halteres brown. Abdomen brown, with 

 indistinct traces of dorsal and lateral dark stripes ; posterior 

 edge of segments somewhat ochreous ; ovipositor ochreous-brown. 

 (Legs wanting in the specimen before me.)* Wings sub- 

 hyaline, with a very pale brownish tint, ochreous in the 

 costal cell ; stigma distinct ; veins brown. Ultimate section of 

 the anterior branch of the second longitudinal vein appearing as a 

 continuation of the first longitudinal ; second posterior cell in 

 complete contact with the discal, the latter consequently hexagonal. 



JIab. — Sydney (Masters). A single specimen. 



Obs. — This is apparently the species referred to by Osten-Sacken 

 in his Studies on Tipulidaj, I., p. 178. 



B. Antennae simple. 



1. Antennce 11-jointed in ^, 13-jointed in $. 

 * Probably somewhat similar to those in P. lineata. 



