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



Megarhinus auriflaus, sp. n. 



$ . Head: scales mostly greenish; a ])aler rim round tlie 

 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 ; second joint with a few dark green scales, 

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

 lobes, proepimera, and sides of mesonolum with light 

 metallic-;j,reen scales (middle of inesonotum rubbed). Pleura 

 with light golden scales. Abdomen clothed above with 

 metallic-green scales towards the base, the colour shading 

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

 which broadens out somewhat in the middle of each segment, 

 and on the fifth in one specimen forms an almost complete 

 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. Z^^s dark blue ; hind femora light 

 golden towards the base, except dorsally ; middle tibiae more 

 or less conspicuously golden on a considerable area a little 

 beyond the middle, the same coloration being slightly indi- 

 cated in the hind tibia3 of one specimen. Front tarsi with a 

 white ring embracing the apical 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. Wnu/s 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 complete. 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. Mid-legs 



