BY E. W. FERGUSON AND MARGUERITE HENRY. 841 



described it, as it is such a distinct species. The single speci- 

 men was brought in by a schoolboy on February 19th. 



Group vii. 

 Tabanus parvicallosus Ricardo. 



Ann. Mag. Nat. Hist., (8), xiv., p. 394 (1914) . 



Specimens of this species were compared with Miss Ricardo's 

 type in London, and found to be identical. This was one of the 

 commonest species in the district, specimens being taken from 

 November 19th to March 29th; most plentiful in January and 

 February. These flies were very abundant round the dairies 

 feeding on the cows and were also taken in the bush. 



Tabanus trilinealis, sp . n . ( Plate xlvi., fig. 3 . ) 



A dark brownish species, thorax with three conspicuous black 

 stripes, and with a median abdominal stripe composed of elon- 

 gated creamy spots. 



Female. Length, 11 mm.; widtb across head, 4.5 mm.; wing, 

 10 mm. 



Head densely clothed with creamy yellow pubescence and with 

 a beard of the same colour. Proboscis very short and thick. 

 Palpi moderately stout, rather strongly curved, yellowish, clothed 

 with greyish tomentum and short black hairs. Antennae light yel- 

 lowish brown, 1st and 2nd joints with scattered short black hairs, 

 3rd joint with basal portion rather long, moderately expanded, 

 obtusely angulate at base and above, but without definite tooth, 

 annuli darker. Forehead parallel, moderately wide, densely 

 clothed with creamy yellow tomentum, and with somewhat scat- 

 tered brown hairs; callus rather large sub-quadrate, not quite 

 reaching eyes and with a lineal extension somewhat longer than 

 the callus. 



Thorax with three, prominent, broad, dark stripes of a dark 

 reddish brown colour approximating to blackish, separated by 

 equally broad, creamy-coloured stripes. Pleurae light brownish 

 rather scantily clothed with hairs. Scutellum light reddish 

 brown, clothed at sides with creamy pubescence, traces of dark 

 brown pubescence in centre continuing the median vitta of 

 thorax . 



Abdomen dark brown approximating to warm sepia, with a 

 median row of elongate triangular shaped creamy spots on the 

 segments, becoming shorter posteriorly and forming an almost 



