242 SYEPHIDiE. 



^videned in the middle ; 4th with a little \\ hitish pubescence. 

 A^enter dull black. Legs mainly blat-k ; hind trochanters in cf 

 with a slender spur ; tips of" anterior femora narrowly, base and 

 tips of anterior tibise, also the anterior tarsi, bro«nish-yellow ; 

 hind femora black, distinctly and uniformly incrassate, with a 

 double row of about 9 or 10 small black spines below ; hind tibiaB 

 and tarsi brown ; base of tibise yellowish. Pubescence of legs 

 short, whitisli. In $ , hind femoral spines fev^■er and placed only 

 towards tip. Wings yellowish ; stigma brown ; halteres orange. 



Length, 10 mm. 



Described from 1 S 'lud 2 5 $ in fairly good condition in 

 the Indian Museum, and identitied as this species by Bigot. 

 Margherita, Assam. Originally described from " Indes." 



188. Xylota penicillata, sp. nov. 



(5 . Head : eyes practically but not absolutely contiguous for 

 nearly one-third ot the distance from upper angle of frontal 

 triangle to vertical margin ; vertical triangle shining blue-black, 

 with short brownish-yellow inconspicuous pubescence ; ocelli 

 dark red. Frons and face without obvious pubescence, both 

 covered with white dust except above autennte, whez-e the surface 

 is shining black with a little dark blue tinge. Antennal 1st and 

 2nd joints blackish, 3rd dull brown. Occiput grey-dusted, with 

 whitish pubescence on lower part and with a very short marginal 

 fringe. Thorax shining deep blue-black, finely punctate and 

 with very short inconspicuous yellow pubescence ; pleurse all 

 white-dusted, with longer whitish pubescence on mesopleura and 

 sternopleura ; scutellum shining blue-black, finely punctate, 

 with whitish pubescence. Abdomen shining dark brown, with 

 hind margins of 2nd and 8rd segments broadly, and 4th segment 

 wholly, of an indistinct deep blue tinge. Pubescence short but 

 obvious, whitish, longer towards sides, black on hinder parts of 

 2nd and 3rd segments and over whole of 4th. Yenter pale 

 brownish-yellow, nearly bare. Legs : fore p;iir dark shining 

 brown, with slight white pubescence, longest on outer side of 

 femoia and tibia; ; knees narrowly, tips of tibise, and tarsi except 

 tips, pale orange. Middle legs relatively rather longer, coloured 

 as fore pair, middle femora with a distinct blunt tooth below 

 near base, pubescence longer than on fore pair, dense, whitish, 

 but very short on upper side of femora and outer side of tibise, 

 long on outer and under sides of metatarsi. Hind legs abnormally 

 shaped ; trochanters with a long, black, slender spur directed 

 backwards, parallel with under side of body ; femora considerably 

 thickened in basal half, compressed towards tip, inner side rather 

 flattened, under side rather enlarged downwards in middle, 

 beai'ing there about six black spines and a bunch of long, rather 

 coarse, yellowish hair ; two rows of fairly strong bl«ck spines on 

 under side near tip, six in outer, four in inner, row ; a number of 



