FAM. MYCETOPHILID^ 71 
face but slightly arched ; antennte 2 + 14 jointed, as long as head and thorax taken together, flagellar 
joints cylindrical, longer than broad, closely sessile. Thorax not deep, with setae posteriorly, elsewhere 
with scales and with appressed pile as has also the abdomen; scutellum with two long setae at the apex. 
Abdomen somewhat depressed, slender, in both sexes seven segmented, in the male with a forceps hidden 
under the seventh segment, in the female the seventh segment and the lamella? are very small. Coxas 
long and robust; all tibiae with several ranges of setae; spurs strong; tarsal joints, particularly the meta- 
tarsi, with numerous setulae. Wing narrow, without anal angle. Subcostal vein ends in the costa; Sc^ (sub- 
costal crossvein) present; base of the radial sector before the R-M crossvein, longitudinally placed, not 
crossvein-like, R-M crossvein transverse in position, the media forking but a short distance beyond it; 
cubitus forks at the base of the wing, the lower branch detached at the base (PI. 5, Fig. 3). 
Type species : A. cinda, de Meijere. 
Geographicai distribution of species : 
I. A cinda, de Meijere, Tijdschr. v. Ent p. 202, fig. (1907). Semarang. Dutch East Ind. 
21. Genus PROBOLETINA, Meunier 
Proboletina. Meunier, Mon. Mycetoph. etc. p. i5i (1904). 
Characters. — This fossil genus resembles Boldiiia, but differs in having the base of the fork of 
the cubitus over twice the length of R-M crossvein distad of the distal end of this crossvein and nearly 
under the fork of the media; the costa is distinctly produced beyond the tip of the radial sector (Pi. 5, 
Fig. 4). 
Type species : P. syntemniformis, Meunier. 
Geographical distribution of species : 
I. P. syntemniformis, Meunier, Mon. Mycetoph. etc. p. i5i, pi. 12, f. 6, 7 (1904). Baltic amber. 
22. Genus LEPTOMORPHUS, Curtis 
Leptomorphus. Curtis, Brit. Ent. p. 365 (i83i). 
Characters. — Head small, round, much narrower than the thorax, nearly hemispherical, 
slightly flattened, placed low upon the thorax; proboscis somewhat projecting; eyes oval, emarginate 
at the base of the antennse; ocelli three in number, the middle one smaller than the laterals, placed in a 
flattened triangle on the front. Palpi cylindrical, incurved, four jointed, the first joint very small, the 
third nearly twice as long as the second, the fourth somewhat longer than the third; antennae long, 
filiform, projecting forward, 2 -j- 14 jointed, the basal joints differentiated, the second small, with setas 
at the tip, the flagellar joints cylindrical, somewhat compressed, pubescent. Thorax short, oval, highly 
arched, mesonotum with setae only at the sides, metanotum high, strongly arched. Abdomen very long, 
slender, nearly linear, compressed, seven jointed, with short terminal joint; the male with moderate 
forceps. Legs long, slender, the tibiae with long spurs and very minute lateral sets; fore metatarsi 
longer than the tibiae. Wings elongate oval, shorter than the abdomen, setulose. Costa but very slightly 
produced beyond the tip of the radial sector; subcostal vein complete, ending near the middle of the 
wing in the costa and connected with Ri by Sc^, (subcostal crossvein); media forked far distad of the 
