igii.] G. RiCAKDO : Revision of the species of Tabaiius. 245 



Forehead anteriorly with white tomentum, sometimes traversed 

 longitudinally by a brownish stripe. Antennae yellow, the last four 

 divisions of the third joint black, this joint with the usual tooth. 

 Eyes naked. Thorax with indistinct yellowish grey tomentose 

 stripes ; sides with grey tomentum and yellow hairs ; a small black 

 stripe sometimes indistinct; breast with whitish tomentum and hairs. 

 Abdomen : the testaceous sides reach more or less towards the mid- 

 dle, so.netjmes only leaving a black dorsal mark on the second and 

 third segments ; the last four segments with their posterior Ijorders 

 of a bright red testaceous ; with a posterior ^^ellow edging ; under 

 side testaceous , the three last segments black, with a testaceous po.s- 

 terior border. Legs of a dull testaceous ; anterior coxae pale, with 

 yellow hairs ; posterior tibiae brownish on the posterior side. 

 Wings almost clear, a little brownish on the outer Ijorder ; veins 

 normal, as those of 7". bovmus. 



From N. China. M. Bigot. 



A large species allied to Tabanus buvinus, L., but distinguished 

 from it hx the larger tooth of the antennae which are bright reddish 

 yellow, usually black at the apex, and b\' the wholly 3'ellow legs. 

 2 . .-16rf6»;n6'» reddish yellow with apex blackish, and a large median 

 series of grey tomentose, triangular spots on a black median stripe 

 and grey tomentose segmentations, the anterior borders of segments 

 are to a great extent reddish brown ; under side almost wdiolly yellow. 

 Legs yellow, but the tarsi reddish brown. Wings often tinged with 

 brown along the veins, or nearly clear. Forehead very slighth- 

 narrowed anteriorly, about eight times as long as it is narrow. 

 Frontal callus pear-shaped, large, hardly touching the eyes with 

 a linear extension. Palpi reddish yellow, long, almost the same 

 size throughout. lycngth 24 mm. 



This species may be considered as the Chinese form of TabaJiiis 

 hovinus. 



Tabanus confucius, cr* , Macquart, type (male), was distinguished 

 from this species by the absence of an appendix to wing, which 

 of course is not a trustworthy character, some of the specimens in 

 Brit. Mus. coll. possess one and some have none ; I belie\'e the male 

 type of confucius is the same species as Tabanus yao but so denuded 

 that the black median stripe is not covered with the triangular 

 median grey .spots, though traces of them can be seen. Tabanus 

 Irigonus, Coq., is identical, with the exception of the colouring of the 

 legs, with the Macquart species, and can only be considered as a sub- 

 form so far peculiar to Japan. Abdomen darker. The femora and 

 coxae are blackish or reddish brown with grey tomentum and 

 bright yellow pubescence on the coxae and under part of femora, 

 on the upper sides of the latter it is shorter and black, tibiae yel- 

 low, appearing blackish at apices owing to the thick black pubes- 

 cence which elsewhere is largely yellow, tarsi 1)lackish with black 

 pubescence. 



Atylotiis rufidens, Bigot, may possibly be a denuded specimen 

 of the subform trigonus, described from one female, collected north 

 of Ye.so, Ja])an. 



