 RELINGTA: 51 
6 (3) Abdomen metallic blue, more or less yellow 
towards the base ; scutellum and thorax 
of a metallic-blue colour, 
(10) Snout reddish yellow ; second abdominal 
segment more or less yellow, third with 
a dull black or bluish hind Border. 
8 (9) Legs entirely pale yellow; species of 
c@rulescens, Loew. 
Shiv Mowtsizie! NPs Ste Pa 2 a 
9 (8) Legs strongly infuscated; species of larger 
sow teenms . anced. teat Wasiee eee var. fuscipes, var. n. 
10 (7) Snout shining blue. like the rest of the 
body ; only ‘the first abdominal segment 
yellowish towards the middle, third with- 
out dark hind border ............. ... pyenosoma, sp. 1. 
45. Rhingia lutea, sp. n 
@. Length of body 11 mm. 
A wholly luteous species, distinct from the allied mecyand, 
siches in having the frons and the snout entirely yellow, and the 
black hind border of the abdominal segments narrower. 
Head reddish yellow, the sides of the occiput blackish, with dark 
grey dust; frons shining, clothed with very short dark hairs placed 
on small dark punctures, and with an ill- defined dusted band before 
the supra-antennal tubercle, which is rounded, prominent, and 
bare; face shining, with a reddish middle keel continued on the 
snout, which is long and dull reddish, without any brown marking; 
peristoma yellowish, whitish and white-haired behind ; proboscis 
black, as long as the snout; antennze orange- coloured, with the 
basal joints very short and the third longer than broad and some- 
what pointed at the tip; arista bare, long, brown, broadly reddish 
towards the base ; occiput with some erect dark hairs at vertex, 
but without any fringe on the sides. Thorax reddish, punctate, 
with very short dark hairs on the punctures; pleure with greyish 
tomentum and almost bare; a blackish spot on the breast over the 
hind cox; seen from behind the thorax shows in the middle 
two ill- defined, broad and parallel, whitish stripes. Scutellum very 
broad, semicircular, yellow, punctate, with short black hairs, the 
punctures and the hairs being more developed along the hind margin, 
which therefore appears minutely serrulate ; below in the middle 
it is clothed with erect soft white pubescence. Squamule yel- 
lowish, with a very long fringe of dark yellowish feathered hairs. 
Halteres yellowish. inedien broad and rounded, less punctate 
and more glittering than the thorax, the first two segments pale 
vellowish, “the others reddish like the thorax ; first seament with 
a very small black line behind, broadly interrupted in the middle 
and not reaching the sides; second segment with a black hind 
border, which is narrowed but not interrupted in the mildle ; third, 
fourth, and fifth with a slightly broader black hind border. The 
hair on the abdomen is very short and dark, only on the sides at 
base longer and yellowish. Venter yellow, with black hind borders 
on the sides of third and middle of fourth segments. Legs with the 
4 
