162 INSECTA SAUNDERSIANA, 
Wing-ribs tawny; veins pitchy, tawny at the base and beneath the fore bor- 
der; poisers pitchy. Length of the body 5 lines; of the wings 11 lines. 
THEREVA APICALIs, Fem. 
Fulwa, pectore cano, abdominis basi segmentorum marginibus posticis ven- 
treque ferrugineis, antennis nigris, pedibus fulvis, alis subcineneis, 
Body black, adorned with a dark tawny covering : head clothed above 
with black hairs, hoary in front and beneath where it is clothed with white 
hairs: eyes red: month pitchy ; palpi yellow: feelers black: breast hoary, 
clothed with white hairs: abdomen obeunical, much longer than the chest; 
hind borders of the segments pale ferruginous, clothed with pale hairs ; un- 
derside and one-third of the back from the tip pale ferruginous : legs tawny, 
clothéd with short pale hairs, beset with black bristles: wings pale gray ; 
wing-ribs and veins tawny ; poisers yellow with pitchy knobs. Length of 
the body 54 lines; of the wings 10 lines. 
THEREVA DEJECTA, Fem. 
Nigra, abdominis segmentorum marginibus posticis ferrugineis, antennis 
pedibusque nigris, tibiis fulvis, alis limpidis. 
Body black, thinly clothed with hoary hairs: eyes pitchy: sucker and 
feelers black: abdomen obconical, longer than the chest; hind borders of 
the segments ferruginous : legs black, beset with black hairs and bristles : 
shanks dark tawny with black tips ; foot-cushions tawny ; fore shanks tawny 
for only half the length from the base: wings colourless; wing-ribs and 
veins tawny, the latter pitchy towards the tips; poisers pitchy. Length of 
the body 3 lines; of the wings 6 lines. 
Genus CHTROMYZA, Wiedemann. 
Curromyza Prisca, Fem. 
Fulva, capite nigro, thorace vittis tribus fuscis ornato, abdomine fusco 
fasciis tribus abbreviatis fulvis ornato, antennis pedibusque fulvis, 
alis sublimpidis. 
Body tawny: head black: eyes black; all the facets very small: 
feelers tawny: chest adorned with three brown stripes, which are disposed 
like those of a Chironomus, the middle one slender and in advance of the 
