BY ARTHUR WHITE. 61 



Female. Face black; front with a median ridge, black 

 and sliining except for a uarrow salmon-coloured patch 

 directly above the antennae ; the head where it forms a 

 narrow ridL'e behind the eyes is also salmon-coloured. 

 Antennae t)lack, the first joint very short, the second a little 

 longer than the first, the third hardly as long as the first and 

 second logetlier, annulated, and provided with a long sub- 

 terminal arista, whi' h is distinctly longer than the three 

 joints of the antennae together. Eyes bare and widely 

 separated. Thorax and scutellum black, with a little 

 very short white pubf^scence ; scutellum with two black 

 spines, which rise diagonally at an angle of about 45 degrees. 

 Abdomen black with long, but scanty, pubescence along the 

 sides. Legs yellow, with all the tarsi darkened. Wings 

 with the anterior veins and stigma brown ; posterior veins 

 pale and indistinct ; of the three veinlets issuing from the 

 discal cell the middle one is the most distinct. 



This species is only known from a single specimen. It 

 occurred by a small marsh at Mangalore, on November 12, 

 1911. An allied undescribed Victorian species, represented 

 in tbe Melbourne Museum by a single specimen, may be 

 distinguished by its having the scutellar spines yellow. 



Subfamily Pachygfastrinae. 

 11. LoNCHEGASTER, Gen. nov. 



Small black flies with a sbort, ovate abdomen; scutellum 

 produced backwards in the form of a spine. 



This genus reseml)les Pachygastei, but is distinguished by 

 the curious form of the scutellum, which rises from the 

 thorax at an angle of about 45 degrees, and is produced into 

 a tliiu central spine, the spine Iteing about the same length 

 as the rest of the scutellum. 



Fig. 7. Wing of Lonchegaster armota. 

 Head flattened beneath. Eyes touching in the male, but 

 widely separated in the female. Antennae with the two first 

 joints small, the third round and enlarged, with a long 

 subterminal arista. Thorax long ; scutellnm as described 

 above. Abdomen short, broad, and ovate. Legs simple. 

 Wings with the cubital vein curving upwards, and forked 



