FAM. EMPIDIDZE 179 
humeral or posthumeral; metapleurz and pectus abundantly hairy. Abdomen with more or less hairs, 
stout, sometimes asymmetrical toward the end in the male, in which case the fifth ventral is large and 
posteriorly tuberculate. Legs strong but not deformed, hairy and bristly. "Wings narrow, costa stop- 
ping at the tip of the wing, basal bristle present, auxiliary vein straight, ending before the costa, third 
vein with a short fork, discal cell complete, shorter than the basals, anal cell small, anal vein attaining 
the margin, axillar excision deep, alula small, with a short close fringe of fine hairs; calypteres nearly 
bare, their fringe almost nricroscopic. 
Type species : E. comantis, Coquillett. This group was supposed by Coquillett to bear the same 
relation to Empis that Neocota did to Rhamphomyia. | In both cases the distinguishing characters are con- 
fined to the hairy face and nearly bare calypteres. Species of Emfis of the obesa group are very similar 
to Empimorpha, even to the reduction of the fringe of the calypteres. It seems more likely that JNeocota 
has developed from Empimorpha by a loss of the fork ot the third vein than that both of these genera are 
parallel outgrowths of RAamphomyia and Emfis. Such an evolution opens the interesting question as to 
whether Rhamphomyia is not a polyphyletic group, developing from several of the subgenera of Empfis 
through a simplification of the third vein. | 
Geographical distribution. 
I. E. baybata, Loew, Berl. Ent. Zeitschr. Vol. 6, p. 195 : Cent. 2, No. 19 California, Washington. 
[1862] (Empis); Coquillett, Proc. U. S. Nat. Mus. Vol. 18, p. 396 
(1895); Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 329, f. 106, 
(1902). 
2. E comantis, Coquillett, Proc. U. S. Nat. Mus. Vol. 18, p. 396 (1895); California. 
Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 33o, 353 (1902). 
. E. geneatis, Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 329, f. 105 (1902). California. 
. E. plumipes, Matsumura, Addit. Vol. 2, p. 356, pl. 21. f. 18 (1916). Japan. 
. E. rufithorax, Brunetti, Rec. Indian Mus. Vol. 9, p. 3o (1913); Fauna India. 
Brit. India, Dipt. Vol. rz, p. 359 [1920] (Hilara). 
UCn-R C 
28. GENUS NEOCOTA, CoquiLLETT 
Neocota, Coquillett, Proc. U. S. Nat. Mus. Vol. 18, p. 434 (1895); Proc. Ent. Soc. Wash. Vol. 5, 
p. 254, 260 (1903); Melander, Williston, N. Amer. Dipt. Man. p. 225 (1908); Kertész, Cat. 
Dipt. Vol. 6, p. 38 (1909); Coquillett, Proc. U. S. Nat. Mus. Vol. 37, p. 574 (1910). 
Characters. — Large stout pilose species resembling R/amfphomyia but with hairy face and bare 
calypteres. Wholly opaque black. Eyes of the male entirely contiguous above the antennz, bare, the 
facets minute and uniform, face broad and densely hairy; antenna elongate, equalling the length of 
the head, the first joint cylindrical, long and hairy, the second joint globular and not setose, the third 
joint lanceolate, tapering to near the end, then narrowly cylindrical, its style one-third as long as the 
third joint, thick, consisting of two joints, with the basal segment quadrate and the outer segment conical 
and twice as long as the basal; proboscis slender, nearly vertical, slightly shorter than the head, palpi 
narrowly spatulate, black and densely hairy.  ^Prothorax and mesothorax densely hairy, three 
notopleural bristles but no others, scutellum with a dense fringe, metapleurz with a dense cluster of 
hairs. Basal segments of the abdomen with abundant hair, fourth to the seventh tergites velvety, second 
tergite with a double transverse row of pittings; lateral valves of the pygidium large and ovoid, dorsal 
valves small, penis rather slender, only its base visible. Legs robust, including the coxz densely hairy, 
no bristles but many of the hairs long and setiform. Fringe of the calypteres vestigial, the hairs of 
