444 MAJOR E. E. AUSTEN. 



narrowly light buff or cream-buff, entire ventral surface with a thin, pale drab- 

 grey, pollinose covering, which, however, when venter is viewed from behind at a 

 low angle, allows a large, quadrate, not sharply defined, dark median blotch to be 

 seen on each segment from second to sixth inclusive ; venter clothed mainly with 

 fine, minute black or blackish hair, seventh sternite clothed as usual with coarse, 

 erect black hairs, lateral thirds of second sternite, lateral fourths of two following 

 sternites except anteriorly, and posterior angles of fifth sternite clothed with 

 glistening, appressed silvery white or yellowish hair, which is longer at lateral 

 extremities of hind margins than elsewhere ; entire hind margins of second to fourth 

 (or perhaps, second to fifth) sternites inclusive, sometimes clothed with similar 

 hair. Wings sepia-coloured (in life probably considerably darker), an ill-defined, 

 slightly paler area in second submarginal cell ; veins lighter or darker mummy- 

 brown, anterior branch of third longitudinal vein forming a right angle with main 

 stem, then bent at an obtuse angle, appendix (at least in case of type and paratype) 

 between 0-4 and 0-5 mm. in length; stigma sepia-coloured or dark tawny-olive, 

 narrow, elongate and tapering. Squamae sepia-coloured, borders nmmmy-brown, 

 fringed with short pale hair ; antisquamae fringed with longer whitish hair. Halteres 

 cinnamon-brown, stalks, except distal extremities, and tips of knobs paler (light 

 ochraceous-buff ) . Legs: coxae drab-grey polhnose, front coxae and outer surfaces 

 of middle and hind pairs clothed with fine whitish or yellowish- white hair, lower 

 surfaces of middle and hind coxae, and also part of lower portion of outer surface 

 of middle coxae, clothed with black or blackish hair ; femora russet-coloured, darker 

 (more or less blackish-brown) above (at least in case of front legs), upper surfaces of 

 femora clothed mainly with short, appressed black hair, mixed, at least in case of 

 hind pair, with glistening ochreous or yellowish hairs, hind femora also with a tuft 

 of whitish hair at base above ; posterior surfaces of front and middle femora clothed 

 with longer whitish hair (mixed above with black or blackish hair in case of front 

 femora), hind femora, with longer whitish or yellowish-white hair below, and with 

 whitish or ochreous hair on lower portion of anterior surface ; front tibiae chocolate- 

 brown or clove-brown, and clothed with minute, appressed black hairs, base on outer 

 side paler (indistinctly russet), clothed with minute, glistening, appressed Naples 

 yellow hairs ; middle and hind tibiae russet-brown or russet, paler at base, clothed 

 mainly with minute, appressed black hairs, proximal portion of inner surface in 

 case of middle tibiae, and of outer surface in that of hind pair clothed with glistening, 

 appressed, ochreous or yellowish hair, outer edges of extensor surfaces of hind tibiae 

 fringed with longer black hair, flexor surfaces of hind tibiae sometimes largeh- clothed 

 with appressed, glistening ochreous hairs ; front tarsi black, third and following 

 segments strongly expanded in $ ; middle tarsi blackish-brown, likewise with last 

 three segments somewhat expanded ; hind tarsi with first segment and proximal 

 two-thirds of second segment russet, otherwise dark brown ; all tarsi clothed above 

 with minute black hairs. 



S. SiAM : Chantabun (— Moiihot : — ex coll. the late W. W. Saunders). 



In general appearance, as also in the markings on the dorsal surface of the 

 abdomen, and in the narrowness of the front in the $, Tabanns ruhicundulus resembles 

 T. indianus, Ric. (Rec. Ind. Mus., Calcutta, iv., p. 175 (1911) ), which, originally 

 taken in India (North Kanara, Bombay Presidency), is also found in Hong Kong 

 and Formosa. The new species described above may, however, at any rate in the 

 $ sex, be distinguished from the one in question by its differently coloured legs (the 

 femora being paler, and the proximal halves or three-fifths of the front tibiae not 

 being cream-coloured), and by the presence of a well-developed appendix to the 

 anterior branch of the third longitudinal vein. 



7. Tabanus brunnipennis, Ric. 



Tabanns brunnipennis, Ricardo, Rec. Ind. Mus., Calcutta, iv, p. 160 (1911). 



