LEPTIS. 127 



yellow, as are the rather distinct elongate palpi, bearing black 

 bristly hair. Thorax uniformly light brownish yello\v ; in certain 

 lights small quadrate grey reflections on the shoulders, and a 

 distinct broad whitish-grey horizontal stripe across the pleurae. 

 Abdomen concolorous ; both thorax and abdomen with very sparse 

 short pale hairs; venter similar. Legs with coxae and femora 

 concolorous ; knees narrowly brown ; tibiae a little darker brownish 

 yellow, becoming nearly or quite brown at the tips ; tarsi dark 

 brown ; legs minutely pubescent. Wings uniformly pale yellowish 

 grey. The 2nd posterior cell narrow, the sides almost parallel ; 

 anterior cross- vein before one-fourth of the discal cell ; branches 

 of 4th longitudinal vein issuing from discal cell well separated, 

 and cell widely open ; halteres light brownish yellow. 



Length, 5 mm. 



Described from a single perfect 3 in the Indian Museum from 

 Darjiling. 



88. Leptis triangulata, sp. nov. 



rf . Head with vertical triangle small, black, shining, bare, 

 extreme vertex with a few short, black, bristly hairs ; ocelli dull 

 reddish brown ; eyes black ; frons, epistoma, and cheeks whitish 

 grey, slightly shimmering, the last with pale yellow hairs ; antennae 

 orange, 1st and 2nd joints slightly bristly, 3rd approximately 

 conical, with long black arista ; proboscis brownish yellow ; palpi 

 blackish with numerous bristles ; back of head greyish, with short 

 pubescence above and longer yellow hairs below. Thorax brownish 

 yellow ; dorsum with three shining black stripes, the median 

 one broad, beginning on anterior margin, the outer ones nar- 

 rower, beginning later, their posterior ends gradually diminish- 

 ing, all three stripes dying away before reaching the scutellum ; 

 sternopleuraand pteropleura with a slight silvery-white shimmer in 

 certain lights ; whole thorax bare, except for a few black bristly 

 hairs on shoulders, along the margins, and on the wholly brownish- 

 yellow' scutellum. Abdomen brownish yellow ; a small rounded or 

 pear-shaped black spot in middle of 2nd segment; 3rd, 4th, and 

 oth segments with a large triangular black spot at base, the angles 

 not quite attaining side and hind margins ; hind margin of 5th 

 and all the 6th and 7th segments black or blackish, more or less 

 shining ; venter brownish yellow, hind margins of segments 

 narrowly blackish brown ; upper and lower surfaces of abdomen 

 with short black pubescence, which is longer towards the sides ; 

 genitalia small, yellowish, mainly concealed. Leys brownish yellow ; 

 tips of coxae, femora, and tibiae more or less towards tips, and all 

 tarsi, brownish or dark brown ; legs minutely black pubescent, 

 coxae with mainly yellow hairs on basal half and longer black 

 bristly hairs towards tip. Wings yellowish, slightly darker 

 anteriorly ; stigma indistinctly a little deeper yellow ; halteres 

 brownish yellow. 



Length, 7-8 mm. 



