202 On Tabani//-o/?j the Paheurctic Begion. 



black, with grey tomentum. Abdomen long and narrow, 

 reddish, with a row of median grey triangular spots, which 

 on the second and last segments are snrronnded by black 

 margins ; the hind borders of the segments narrowly white, 

 the pubescence black ; the underside brighter red, with some 

 irregular black markings. Legs red ; the coxa? and femora 

 with longish white hairs ; the tibise with short black pubes- 

 cence on the sides and some whitish-yellow hairs on their 

 flat surfaces ; tarsi with black pubescence, pul villi yellow. 

 Wings longer than the abdomen, hyaline, the stigma and 

 veins yellow ; no appendix. 



Length 18, width of head 5 mm. 



Female. — Eyes not large, the facets equal, with two bands 

 (in the male I can see no trace of bands) . Frontal callus 

 reddish brown, almost square, a little wider at its base, nearly 

 touching the eyes ; frontal stripe grey, with black markings 

 (probably denuded), the middle callus being a black stripe 

 not joining the frontal callus ; the vertex blackish ; no ocelli- 

 gerous tubercle. Antennae at base red (the rest wanting). 

 Frontal triangle grey. Face grey, with white hairs ; beard 

 white ; palpi pale yellow, the second joint long and slender, 

 at the base stouter, gradually tapering to a point, nearly 

 straight, with a few black hairs. On the abdomen the grey 

 triangular spots are replaced by a broad stripe of greyish 

 tomentum, the black pubescence is longer, the abdomen not 

 so pointed as in the males. Wings with the first posterior 

 cell distinctly narrowed at the apex (this is not the case in 

 the male). 



Length 14, width of head 4 mm. 



There are several species of Tabani from Japan : a long 

 series of Tabanus trigonvs, Coq., male and female ; this is a 

 very nearly related species to the European bovinus and 

 sudeticus, the brighter yellow coloui- of the antennae and the 

 larger tooth of the third joint, with an appendix to the wings, 

 being the most striking differences. Another species (males 

 and females) from Korea is very nearly allied to Tabanus 

 bovinus, Lw., but the tooth of the antennae is larger and 

 brighter yellow and the wings possess an appendix; the eyes 

 of the males having facets all equal in size distinguish it 

 from Tabanus trigonus, Coq. 



