igii.] G. RiCARDO : Revision of the species of Tabaiius. 173 



Tahanus interims, Walker^ $ , List Dipt., i, p. 164 (1848). 



Tabanus monilifer, 9 , Bigot, Mem. Soc. Zool. France, v, p. 

 654 (1892). [Atylotus.] 



$ . Testaceous, abdomen with dorsal white spots. TyCgs tes- 

 taceous ; anterior tibiae white at base. Length 7I lines. 



Palpi of a pale yellow. Beard and face 3'ellowish white. 

 Forehead yellowish with a testaceous callus prolonged as a line. 

 Antennae : the first two joints are testaceous, the third is wanting. 

 Thorax and abdomen testaceous (denuded), with traces of a yellow- 

 ish down ; an abdominal stripe of triangular whitish spots ; under 

 side with whitish down. Anterior tibiae whitish in front, brown at 

 apex. Wings yellowish, veins normal. 



From India, Macq., Dipt, exot., vSuppl. i, p. 160. 



cf . We have since describing the female observed the male 

 which differs in the dark colour of the thorax and abdomen. Macq. , 

 /.c, Suppl. iii, p. 170. From Java. Length 6 lines. Palpi yellow- 

 ish. Beard white. Forehead and face white, a little yellowish. 

 Antennae testaceous, third joint with the usual tooth and the last 

 divisions black. Eyes: upper part brown, lower part black. 

 Thorax with a yellowish grey tomentum, a testaceous stripe with 

 greyish tomentum, passing above the insertion of the wings ; sides 

 with ashy grey tomentum. Abdomen testaceous ; segmentations 

 a little yellow (seen sidewa^^s), seventh segment brown ; under side 

 the same. Legs fawn-coloured, femora blackish, a little fawn- 

 coloured at apex; tarsi brownish. Wings clear, exterior border and 

 stigma yellow: veins normal. From Java. ^lacq.. I.e., Sui)pl. v, 



V- 47- 



Macquart's types are in Mr. Verrall's coll. 



Walker's type from Sylhet, Assam. 



Bigots type from N. Khasi, in a very dirty condition, two 

 other females with it are from Sibsagar, Assam, and India. 



In Brit. Mus. coll. specimens (females) from Sylhet ; Chargola 

 Valley, Sylhet; Dibia, Khasi Hills District (Chennell), and Khasi 

 Hills (Godwin-Austen, vSladen). In Indian ^Museum coll. females 

 from N. Khasi and Assam. 



This species is distinguished from the species in Tahanus 

 fumifer subgroup by its smaller size, liroader, almost parallel fore- 

 head and reddish yellow colour. 



A medium-sized reddish yellow species, the median triangular 

 spots on abdomen small and often indistinct, the pubescence on 

 dorsum scanty. Antennae reddish, rather wide at their base. 

 Legs reddish brown. Length 17-18 mm. 



Face covered with yellowish brown tomentum and with white 

 pubescence. Beard yellowish white. Palpi reddish yellow with 

 some grey tomentum and rather thick black pubescence, in shape- 

 long and slender, ending in a long apex. Antennae deep red, darker 

 at the apex, the first two joints with some black pubescence, 

 the tooth of third joint prominent. Ft)relieadx?\.\h.QX narrow, about 

 six times as long as it is wide, very slightly narrower anteriorly, 



