187 



INDIANA CAVES AND THEIR FAUNA. 



distinct hairs. Abdomen brown, compressed, the distal part of each seg- 

 ment with a lighter ring, which is broader underneath. Legs pale yel- 

 low with a distinct fuscous tinge. Coxse paler, the front ones with only 

 a few fine hairs at tip; tibiie wholly without spines except at tip, still 

 on the posterior ones a few scarcely perceptible setulse. Tarsi elongated, 

 uniformly infuscated, slightly darker than the tibise ; in the front leg the 

 entire tarsus is about four times the length of the tibia, in the middle leg 

 two and a half, and in the hind leg one and a half times. The tibial 

 spurs on the front leg are a fifth the length of the metatarsus ; on the 

 other legs a third. 



Wings without maculse, tinged with yellow along the costa and to a 

 less degree all over the apical half. Venation as figured. 



Length, 5.2 mm. ; of wing, 4.5 mm. 



One female, Shiloh Cave, July 15. 



The specimen was taken fi'om beneath a 

 rock about 800 feet from the entrance. A 

 member of the genus has been recorded by 

 Osten Sacken from Bradford Cave, 16 miles 

 from New Albany, Ind. The larva; live in fungi.— W. S. B 



Wing of Mhctt pliiCa umbruluus D 



Odontopoda, new genus. 



[ofh'uc tooth ; ttov^ foot. ) 



(Mycetophilidse near Glaphyroptera.) 



Ocelli three, all large, nearly in a straight line; antennae 16- 

 jointed, the two basal joints distinct, the others cylindrical, the third 

 longest; palpi four-jointed, first short, second a little longer, third longer 

 than the two preceding, fourth a trifle shorter ; coxse elongated ; abdo- 

 men (male) long, slender, clavate, composed of seven distinct segments 

 besides the hypopygium. Wings, fourth longitudinal arising near the 

 base ; third vein not branched ; costal vein not extending beyond tip of 

 third longitudinal ; fifth vein forked ; auxiliary vein ending in the costa 

 almost half way to the apex ; small crossvein nearly equal in length with 

 the first segment of the third vein ; fourth vein with a very thin anterior 

 branch arising at the origin of the crossvein, or seemingly froai the 

 crossvein itself. 



4. Odontopoda sayi, n. sp. 



Male. Front black, antennae brown, 

 except the first three joints, which are 

 yellow ; mouth parts yellow ; thorax 

 Wing of t/uo/iopoaa aayi n. sp. and coxss yellow, rather pale ; the dor- 



sum, however, more acorn-colored without distinct lines. Abdomen 

 brown, the bases of the segments and a larger part underneath of 



