FAM. EMPIDID/E 133 
Characters. — Rather large, brownish, entirely pollinose bristleless species with yellow legs. 
Eyes broadly separated, bare, the lower anterior facets of the male large; antennz inserted below the 
middle of the head, nearly bare, the basal joints subequal, the third joint elongate, cylindrical at the 
bases and bluntly conical at the apex, terminated by a thickened two-jointed style the outer segment 
of which is short and bristle-like; proboscis three times as long as the head, rigid, directed somewhat 
forward, the labrum three-fifths as long as the labella, the two-jointed palpi short, narrow, flattened and 
incumbent; ocelli large, not raised, ocellar and vertical hairs reduced to microscopic size. "Thorax 
modera'ely stout, entirely without bristles, no metapleural setze. Abdomen robust, cylindrical, twice 
as long as the thorax, nearly bare, no pittings, six segments visible anterior to the epipygium, the 
seventh sternite forming a flattened peduncle bearing the pygidium, which comprises a pair of upright 
pointed lateral valves, a pair of flattened dorsal decussating filaments, a pair of basal long slender 
diverging filaments and a hooked downward-pointed penis. Legs entirely devoid of bristles, simple 
except that the hind femora and tibiz of the male are bent, pulvilli small. Wings rather broad, anal 
angle broadly rounded, costa extending around the entire wing, no basal bristle, auxiliary vein distinct 
except at the tip, straight, the other veins reaching the margin, third vein forked, basal cells long, equal 
in length, discal cell rather narrow, blunt, sections of the fourth vein proportioned 0.8 : 0.2 : 1 : 1.2, of 
the fifth vein r.r : 0.3 : 1 : r, anal crossvein abruptly reflexed and fused with the underside ofthe 
anal cell, anal vein represented by a faint fold, no alula, alular fringe very weak, calypteres with a 
straight edge and with weak hairs. 
Tyne species : T. neomexicanus, by original designation. 
Geographical distribution. 
I. T. neomexicanus, Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 352 [1902] New Mexico. 
(Empis); Ent. News, Philad. Vol. 17, p. 377, fig. (1906). 
21. GENUS TENONTOMYIA, WHITE 
Tenontomyia, White, Papers, Proc. Roy. Soc. Tasmania, 1916, p. 236 (1917). 
Characters. — Head a little narrower than the thorax ; eyes separated in both sexes; proboscis 
thick, a little shorter than height of the head and bearing long hairs, palpi not distinguishable; antennz 
with basal joints extremely small, the third expanded, nearly oval in shape and drawn out at the apex 
into a narrow point, from which springs a long aristiform style which is about twice as long as the three 
antennal joints together. "Thorax considerably arched, devoid of pubescence, two rows of fairly long 
dorsocentrals, lateral bristles long, four scutellars. Abdomen with a few short lateral bristles on. hind 
margins; genitalia of male narrow but lengthened. Legs long, particularly the hind pair, and very 
slender, all joints simple and practically bare. Wings of medium size, auxiliary vein straight and 
apparently becoming coalescent with the first vein ; third vein with perpendicular fork which closes the 
first submarginal cell before the apex of the marginal cell, discal cell somewhat triangular, with three 
complete posterior veins, stigma weak. 
Genotype : T. gracilijes, White, the only known species. This is a brownish insect 5.5 mm. in 
length that has been taken a number of times in Tasmania. White described the third vein as simple, 
designating the anterior fork as a crossvein. The conformation suggests Blepharoprocta or Emfis clausa, 
where the submarginal cell is closed by what is unquestionably the anterior fork of the third vein. 
Geographical distribution. 
1. T. gracilipes, White, Papers, Proc. Roy. Soc. Tasmania, 1916, p. 237, Tasmania. 
f. 45 (1917). — PI. 8, Fig. 83. 
