yb MYCETOPHILID^:. 



the diagram of the wing. The only other species known i 

 0. tryoni, Skuse, from Australia. I retain the manuscript name 

 given to the species by Bigot, though the applicability of it is not 

 very clear unless the row of bristles around the back of the head 

 is referred to. 



Genus LEIA, My. 



Leia, Meigen (part.),Syst. Besch. i, p. 258 (1818). 



Lejomya, Kondani, Dipt. Ital. Prod, i, p. 195 (1856). 



'Lejosoma, Rondani, op. cit. corrig. 



Qtaphyroateru. Winnertz, Verb, zool.-bot. Ges. Wien, xiii. p. 781 



(1863). 

 Neoglaphyroptera, Osten Sacken, Cat. Dipt. N. Amer. p. 10 (1878). 



GENOTYPE, L. fascipennis, Mg. ; by designation of Curtis 

 (British Entomology, p. 645). 



Head with elevated vertex, oval, flattened in front, placed low 

 upon the thorax ; eyes elongate oval, somewhat emargiriate at the 

 base of the antennae ; ocelli three in number, placed in a curved 

 line upon the broad front ; the laterals large, rather close to the 

 eye-margin, though not contiguous ; the middle ocellus smaller. 

 Palpi large, incurved, four-jointed; the 1st joint smallest, the 4th 

 as long or longer than the preceding. Antennae projecting 

 forward, 16-jointed ; the two basal joints differentiated, setose at 

 the apex ; the flagellar joints cylindrical, somewhat compressed, 

 short pilose. Thorax oval, highly arched ; scutellum small, nearly 

 semicircular in outline ; metanotum high, steep ; halteres small. 

 Abdomen seven-segmented, slender ; in the male cylindrical, and 

 with small forceps ; in some forms the seventh segment is reduced 

 and nearly hidden by the sixth sclerite ; in the female flattened 

 and ending in a short ovipositor with two small lamellae. Leers 

 moderately strong, all tibiae with spurs and lateral setae; fore 

 tibiae with a range of delicate setae on the flexor and another on 

 the extensor surface ; there are also several scattered setae ; middle 

 tibiae with one range of delicate setae and a single prominent one 

 on the flexor surface, two ranges of rather stout setae on the 

 extensor surface, a single seta between the latter near the apex, 

 and three or four setae in an irregular row near the range on the 

 flexor surface ; hind tibiae with a range of delicate setae on the 

 flexor surface and two ranges of stout setae on the extensor 

 surface, besides several smaller scattered ones. Winas somewhat 

 longer than the abdomen, elongate oval, with rounded base. The 

 costal vein ends at the tip of the 3rd longitudinal vein, not far 

 from the wing-tip ; the auxiliary vein is short, ending at one- 

 third of the wing. The 1st longitudinal ends at a little beyond 

 the middle, with the subcostal cross-vein near the tip of the 

 auxiliary. The 3rd vein begins near the tip of the 1st at a right 

 angle, the anterior cross-vein long and oblique, placed at the 

 deflection ; the 4th vein forked a little beyond the anterior cross- 

 vein, the 5th vein widely forked before the fork of the 4th vein ; 

 6th and 7th veins incomplete, the former rather strong. In 



