120 Memoirs of the Indian Museum. [Vol. Ill, 



with some black hairs at the base ; arista yellow ; palpi and proboscis yellow ; all the 

 bristles black, the occiput below without hairs, but with some black bristles ; two 

 lower or. 



Thorax yellow, rather shining, with short pale pubescence on the dorsum and 

 longer darker hairs on the pleura ; there are five complete equidistant longitudinal 

 black stripes, the median a little enlarged posteriorly and prolonged on to the 

 scutellum, the two lateral are outside the dc. and on the notopleural suture; all the 

 bristles strong and black as are also the four scutellar ; metanotum black, shining, 

 3^ellow on the sides. Scutellum yellow, with the median black stripe not reaching 

 the tip ; it bears on the upper side some blackish hairs. Haltères yellow ; squamulae 

 lurid with a dark border and a pale fringe. 



Abdomen shining yellow, with black pubescence and black bristles; in the 

 female the 2nd to 5th joints bear a broad black band on the fore border, the band of 

 the 5th being broader than the others and emarginate in the middle posteriorly; the 

 6th segment is black, yellow in the middle; in the male the 2nd to 4th segments 

 show an equally narrow and complete black band. The 5th is black, with a broad 

 longitudinal yellow band; genitalia black. Venter yellow, with a black band before 

 the tip. Ovipositor shining black, the apical segments yellow; it is as long as the 

 three last abdominal segments together. The tip of the first segment bears four long 

 black bristles. 



Legs wholly yellow, rather short and strong, with black hairs and bristles; 

 front femora of the male with 8-9 bristles beneath and between these with thick 

 black pilosity ; front femora of the female almost bare, with 5-6 bristles. 



Wings hyahne, the stigma black with small luteous tip. There are four com- 

 plete cross-bands, the two first separated, the other two united together on the fore 

 border. On the base from the humeral cross-vein to the base of the anal cell is a 

 small band, sometimes wanting. The first band begins at the stigma, where it is 

 broader, and ends at the tip of the anal cell. The second begins a little beyond the 

 tip of the first vein, reaches along the small cross- vein and ends on the hind border at 

 the end of the 6th vein. The 3rd and 4th bands begin together before the tip of the 

 2nd vein, and diverge extending to the hind margin, the third along the posterior 

 cross-vein and the 4th ending after the tip of the 4th vein ; these two bands are dilated 

 on the costal border and form a /\-shaped band. The tip of the wings at the end of 

 the 3rd vein is filled with brown. The hyaline space between the branches of the 

 /\-shaped band is variable, extending to the 3rd or only to the 4th vein. The apical 

 spot is sometimes united with the base of the /\-shaped band at the end of the 

 second vein. The veins are luteous in the hyaline spaces, and fuscous in the brown- 

 ish cross-bands. 



Some specimens from Assam, Sylhet and lyungleh, April and July. 



29. Taeniostola gracilis, n. sp. 2 . 

 (PI. ix, fig. 32.) 

 A smaller, slender species, distinguished from the preceding by the presence 



