iQii.] G. "RiCARDO : Revision of the species of Tabanus. 151 



This species has a wide distribution, being found from India 

 to Sumatra. 



In the Brit. Mus. coll. are cf 9 specimens from N. India 

 Pusa Bengal, Bassein Bombay, Calcutta; Trincomalee. Tamble- 

 gam, Kandy and other places in Ceylon; Upper Burma ; Kuala 

 Lumpur, Federated Malay vStates; Cavite, Philippines; and from 

 Kajoe-Tanan, Sumatra (Hagen). 



In Indian Mus. coll. from Bunkutwa, Gonda District, U. P. ; 

 Calcutta; Murshidabad, Purneah District; Port Canning; Bengal; 

 Madras Coast ; and Balighai, near Port Orissa E. India. 



In Hovvlett coll. from Belgatchia and Pusa, Bengal; others 

 identified from Sylhet, Assam; and Manipur, Burma. 



The onh' species likeh' to be confused with this species are 

 Tabanus albini edius ,\\' a\ker , and Tabanus rubidiis, Wied., from both 

 of which it may be distinguished by the spindle-shaped continuation 

 of the frontal caUiis, by the almost straight median stripe, narrow 

 almost continuous lateral stripes and by the slender more or less 

 pointed abdomen. Length from 12 — 20 mm. A female specimen in 

 the Paris Museum placed under this species and supposed to be the 

 original type is a specimen of Tabanus albiniedius , W^alker, from 

 Java, but as the original description very clearly states there are 

 three stripes, the type has probably been lost or confused ; there is 

 a specimen side by side wdth this supposed type, determined by 

 Macquart as Tabanus striatus, with the usual striped narrow^ 

 abdomen. 



Some small specimens, females, from Mohmand Pass, N. W. 

 Frontier, in the Howlett coll., which I took at first to be a new 

 species, only measure 11 mm. but I can find no other specific 

 character to divide them from Tabanus striatus. 



9. Frtc^ greyish, with white pubescence. Beard white. Palpi 

 very pale yellow with white pubescence and some black hairs, 

 curved on upper side, with a rather long apex. Antennae reddish 

 yellow, darker at apex. Forehead rather narrow, slighth* narrower 

 anteriorly, about six times as long as it is wide, covered with 

 yellowish grey tomentum, some short white pubescence is visible, 

 on the vertex are some black hairs. Frontal callus shining red- 

 dish brown, oblong, hardly reaching the eyes anteriorly, posteriorly 

 receding from them and continued in a fine line for a very short 

 distance, then becoming broad, at least half as wide as the callus 

 itself, often starting direct from the callus as a broad stripe. 

 Pubescence on hind part of head short and white. Thorax reddish 

 brown, or brown with four fairly distinct greyish white tomentose 

 stripes with white pubescence, elsewhere on the dorsum the pubes- 

 cence is black, sides of thorax with black hairs, breast grey with 

 white pubescence. Scutcllum same colour as thorax, with black 

 pubescence and white hairs round the posterior border. 



Abdomen usually' long and slender, ranging from reddish brown 

 to blackish brown, the median stripe continuous, reaching the sixth 

 segment, composed of oblong grey tomentose spots slightly narrower 

 at their apices on the second and third segment, the side stripes 



