3IO FAUNA HAWAIIENSIS 



the coxae and femora metallic or aeneous, the tibiae usually dark brown or fuscous, the 

 knees and the tarsi, except the last joint, honey-yellow or brownish-yellow ; sometimes 

 the anterior and the middle tibiae are brownish-yellow ; the abdomen varies from a 

 blue-black to an aeneous black ; wings hyaline, always with a more or less well defined 

 discoidal cloud beneath the stigm.al vein, the veins being light brown or brownish- 

 yellow. 



The antennae are 13-jointed, with 2 minute ring-joints, the joints of the flagellum 

 fluted, none of the funicle joints being longer than thick, the 4th, 5th and 6th being 

 wider than long. The postmarginal vein is about two-thirds the length of the long 

 marginal vein, the stigmal vein being more than half the length of the post-marginal. 

 The abdomen is elongate, conically pointed and longer than the head and the thorax 

 united, beneath convex, the second dorsal segment occupying hardly one-third the 

 entire length. 



<J. Length r5 to rSmm. Head and thorax aeneous-black, the scutellum bronzed 

 green, the flagellum subclavate, pubescent, the funicle joints subquadrate, the abdomen 

 oblong-oval, depressed, not longer than the thorax, the second segment bluish. 



Hab. Hawaii ; Kilauea, in August. 



(5) Toxeuina nubilipennis, sp. nov. 



%. Length 2*5 mm. Head and thorax bright bronzed green, shagreened, the 

 antennae black, the legs aeneous-black, a dot on the knees, the extreme tips of tibiae, 

 and all tarsi, except the last joint, light brown or brownish-yellow ; wings hyaline, with 

 a large discoidal cloud extending to the hind margin and the tips smoky, the discoidal 

 cloud parted by a longitudinal hyaline streak. 



The antennae are somewhat similar to those in T. tarsata, but are slightly slenderer, 

 the funicle joints being longer than thick, the first being about i^ times as long as 

 thick, the following very gradually shortening and widening. The marginal and post- 

 marginal veins are nearly equal in length, the latter extending to the apex of the 

 wing where it tapers off to a fine point ; the stigmal vein is about half the length of 

 the marginal. The abdomen is conic-ovate, produced into a point at apex, and fully 

 as long as the head and the thorax united, the second dorsal segment occupying 

 scarcely one-third its entire length ; the fifth segment basally and the sixth and seventh, 

 in certain lights, show a distinct brassy tinge. 



The species is allied to T. tarsata, but may be easily separated by the antennal 

 differences and the colour of the wings. 



Hab. Lanai (3000 feet), in January. — Maui : Haleakala (5000 feet), in October. 

 — Kauai (high plateau), in August. 



