Tropidia. 



483 



side margins, a narrow front margin of second segment not reaehing 

 the sides and foiirth segment black, and along tiie dorsum a blacii 

 middle line, generally interrupted on the hind part of second and third 

 segments; sometimes the hind margins of second and third segments 

 obscurely darkened so that the reddish colour forms two pairs of 

 quadrate spots; the fourth segment is yellowish just at the basal 

 corners, and it has the hind margin and a small central spot reddish, 

 on its front half is a grey pruinose spot at each side and the black 

 dorsal middle stripe is produced between them; abdomen is dullish, 

 only the apical half of fourth segment shining; it is clothed with quite 

 short, depressed hairs which partly follow the ground colour but are 

 black somewhat beyond the sides of the middle stripe and also on 

 the hind parts of the segments; on the grey spots on fourth segment 

 they are pale; at the side the hairs are long only at the basal corners. 

 Venter coloured mainly as dorsum but without black middle stripe; 

 it has short, pale hairs. The genitalia are large, the fourth dorsal 

 segment is about quadrate, but it has the apical corners bent down 

 as rounded triangular lobes ; the anterior half of the segment is some- 

 what depressed; the fourth ventral segment is bent downwards and 

 has a dense brush of red hairs at the hind margin to each side of 

 the middle; the outer lamellæ of 

 the hypopygium are large, reddish. 

 Legs black, shining, the anterior 

 knees and the basal half of front 

 tibiæ yellow, middle tibiæ yellow 

 with a black ring just before the 

 apex ; anterior tarsi yellow with the 

 fourth joint black; hind legs with 

 only the extreme base of tibiæ pale ; 

 hind femora strongly thickened and 

 curved, thickest towards the end, 

 with a large, triangular tooth below 

 the apex towards the anterior side, 

 hind tibiæ somewhat compressed 

 and curved and hind tarsi some- 

 what broad and flat; the legs mainly 

 short-haired, only middle femora 

 with long hairs behind; hind femora 



quite short-haired; the hairs are mainly pale on anterior femora, but 

 front femora with a row of black, somewhat bristly hairs behind and 

 a similar below, and middle femora with a few at apex; front tibiæ 

 black-haired below and behind, middle tibiæ almost quite black-haired 



31* 



Fig. 162. Hind leg of T. scita <?, 

 from the anterior side. x 16. 



