Mr. F. W. Edwards on Formosan Culicidye. 631 



Megarhinus aurifluuSy sp. n. 



cJ . Head: scales mostly greenish ; a paler rim round the 

 eyes. Proboscis dark blue on the stout portion^ more coppery 

 on the slender portion. Palpi distinctly four-jointed, the 

 first joint the shortest; fourth joint scarcely half as long 

 again as the third ; scales dark blue, a narrow creamy ring 

 at the tip of the first joint and a second just before the tip 

 of the second joint. Antennse only moderately stout, the 

 joints distinctly swollen in the middle; torus clothed with 

 small white scales ; ?econd joint with a few dark green scales, 

 less than twice as long as the third. Thorax: prothoracic 

 lobes, proepimera, and sides of mesonotuui with light 

 nietallic-=2,reen scales (middle of niesonotum rubbed). Pleurae 

 with li«ht golden scales. Abdomen clothed above with 

 metallic-green scales towards the base, the colour shading 

 tlirough blue to violet at the tip; a lateral pale golden stripe 

 which broadens out somewiiat in the middle of each segment, 

 and on the fifth in one specimen forms an almost com])lete 

 but narrow transverse band. Sixth segment laterally with 

 some golden hairs on the basal half, apical half with dense 

 black hair-like scales; seventh and eighth segments laterally 

 with long, dense, golden, hair-like scales. Venter almost 

 entirely blue, the fifth and sixth sternites with lateral golden 

 patches, which are broadest on the posterior margin and do 

 not quite reach the base. Legs'\i\v]s. blue ; hind femora light 

 golden towards the base, except dorsally ; middle tibiae more 

 or less congpicuously gulden on a considerable area a little 

 beyond the middle, the same coloration being slightly indi- 

 cated in the iiind tibiae of one specimen. Front tarsi with a 

 white ring embracing the a|)ical third of. the first and the 

 whole of the second joint ; mid-tarsi with a white ring at the 

 base of the first joint, the whole of joints 2-4 white; hind 

 tarsi with one rather narrow whitish ring situated at the base 

 of the second joint. Wimjs with most of the veins dark- 

 bordered, especially those towards the costa; scales fairly 

 conspicuous on costa, subcosta, and radial veins. Longitu- 

 dinal portion of r-m quite twice as long as the vertical 

 portion ; m— cu variable in position. Wing-length 8-12 mm. 

 $ . Palpi slender, purple-scaled, reaching to base of fiftli 

 flagellar joint. First flagellar joint with a few golden scales 

 towards the base. Yellowish transverse band on fifth abdo- 

 minal tergite coni})lete. Venter much rubbed, but evidently 

 much more extensively yellow than in the male. Front legs 

 with the femora pale golden posteriorly, the white ring em- 

 bracing more than half of the first tarsal joint. Rlid-legs 



