igii.] G. RiCARDO : The Oriental Tahanidae. 363 



darker and narrower at apex, some black short pubescence on 

 dorsum, with some yellow hairs at the segmentations. Wings with 

 the brown colouring fainter. 



The specimen named by Walker Chrysops parallel ks, and 

 referred by me doubtfully to Diachloriis [see Ann. ^lag. Nat. 

 Hist. (7), ix, p. 372 (1902)], from Batjan Island (Batchian) (Wal- 

 lace coll.), maj* possibly belong to this genus; but the antennae 

 are wanting, the formation of the forehead, of the antennal tubercle 

 and face, besides the shape of the abdomen and legs, agrees with 

 that of the species described above. 



NEOTABANUS, gen. nov. 



This genus is formed for a species from Ceylon not unlike a 

 Tahamis species in appearance, but distinguished from any species 

 of Tahamis known to me b}^ the prominent tubercle below the 

 forehead where the subcallus is usually situated, bearing the 

 antennae, and by the narrow forehead with no frontal callus or 

 other spots visible, the narrowest part of the forehead is at the 

 vertex. No ocelli present. Hind tibiae with no spurs. Antennae 

 are T abanus-Vike , the first two joints short, the third slender with 

 a very slight angle at base, and composed of five divisions. The 

 genus therefore belongs to the division Tabaninae, and is allied to 

 Udenocera, Ricardo, m the possession of the antennal tubercle, 

 but differs in the shape of antennae. 



Neotabanus ceylonicus, $ , n. sp. 



Two co-types 9 from Pundaluoya, Ceylon. 



A species not unlike a Tabanus species, with a blackish thorax 

 and a brownish abdomen, covered with yellowish grey tomentum 

 and some scattered pale yellow pubescence. Antennae and legs 

 yellowish red. Wings hyaline, tinged yellow on the fore border. 

 Length 12 — 13 mm. 



Face greyish yellow with some greyish tomentum, the cheeks 

 with long blackish hairs, below and on face some pale j^ellow hairs 

 are discernible, face with small foveae on each side below antennae. 

 Beard pale yellow. Palpi red or yellow with long pubescence, 

 chiefly black, but whitish on outer sides and at base, the first joint 

 very small, the second swollen, curved, ending in an obtuse point, 

 nearly as long as the short proboscis. Antennae reddish, the third 

 joint black, the first two joints with black pubescence, the first 

 joint short, stout, nearly as broad as it is long, the second small, 

 roundish, barely half as long as the first joint, the third slen- 

 der, slightly wider at base, the last four divisions narrower, the 

 last division longer than the preceding ones, some black hairs 

 present at each segmentation. Forehead brownish with black 

 pubescence, the tubercle projecting alwve the plane of forehead, 

 shining reddish brown with traces of grey tomentum, placed below 

 the eyes, and rounded off below, divided in the middle, so that 



