iQii.J G. RiCARDO : Revision of the species of Tabanus. 205 



the other tibiae wholly reddish yellow, the pubeseence on legs 

 black. Wi7igs dark brown, paler on posterior border and at ex- 

 treme apex, the centres of cells somewhat ])aler, veins and stigma 

 blackish brown. 



Tabanus inobservatus, $ , n. sp. 



Type 5 and another from Kajoe-Tanan, Sumatra (Dr. 

 Hagen), in Brit. Mus. coll, 



A dull blackish species. Antennae, palpi and legs black. Wings 

 brownish. Forehead very narrow, distinguished from Tabanus 

 caerulescens, Macq., by its dull black not blue-black colour and 

 its wholly black colouring, from Tabanus obscuratiis, Wlk. , from 

 Ceram by its dark wings, and the forehead is narrower anteriorly. 

 The thorax also is black, not reddish brown as in the Walker 

 species which has reddish antennae. Length 16J mm. 



Face blackish with some yellowish tomentum, its pubescence 

 and beard brownish black. Palpi blackish, on inner border 

 reddish yellow, with black pubescence, fairl}^ stout ending in a 

 point. Antennae blackish, the first two joints with black pubes- 

 cence, the third slender with some grey tomentum, the tooth 

 small. vSubcallus covered with yellowish brown tomentum. 

 Forefiead nearly ten times as long as it is broad, anteriorly about 

 half as broad as it is at the vertex, blackish with a little yellow- 

 brown tomentum and some black hairs ; frontal callus reddish 

 brown, shining, long, narrow, almost reaching the eyes with a long 

 lineal extension. Thorax, scutellum and abdomen brownish black, 

 the former with a few golden brown hairs scattered over dorsum, 

 pubescence otherwise black as it is on the abdomen and breast ; 

 abdomen conical in shape; under side similar to the dorsum. Legs 

 black with black pubescence, the tibiae with some gre3'isli tomen 

 tum. Wings deeply tinged with brown, paler at extreme apex 

 and on the posterior border, where however all the veins are 

 shaded, the discal cell paler in the centre ; rudiment of an appen- 

 dix in the type, none on the other female, veins brownish black, 

 stigma black, all posterior cells widel^^ open. 



Tabanus fulvissimus, 9 , Rondani. 



Ann. .Mus. Civ. (ienova, vii, ]). 438 (1875). 



Length 20 mm. From Borneo. 



Body fulvous-reddish, unicoloured. I'orehead Ijtowu 1u1\-ous, 

 with the linear-shaped callus reddish, shining, face ])ak'r. Antennae 

 and palpi red. 



Thorax on dorsum reddish brown, the pleurae and breast 

 fulvous haired. Abdomen on dorsum with the posterior borders 

 of segments margined with short fulvous hairs; the ventral seg- 

 ments at the base obscurely red, with the apices more or less 

 paler. Wings pale brown-yellow, base and costal border fulvous. 

 Calj'ptera brown-red. Halteres reddish with the knob paler. Legs 



