350 ACADEMY OP NATURAL SCIENCES 



fuscous, paler at base : joints rounded: thorax yellowish-brown, 

 trilineate with blackish, exterior lines dilated, middle line capil- 

 lary : metathorax with a gray reflection, yellow each side : poisers 

 elongated, reaching the tip of the second abdominal segment, 

 yellow, with a lateral dusky line : wings with a slight yellowish- 

 brown tint, cross nervures margined with dusky : tergum livid, 

 with a darker dorsal, and submarginal line, and yellowish margin : 

 pleura bilineate with fuscous ; superior line passing round the 

 pectus before the anterior feet, and the inferior line behind them : 

 feet yellowish, with an obsolete dusky band towards the tip of 

 the thighs : venter livid, with a yellowish margin and obsolete 

 middle line. 



Length more than one-fourth of an inch. 



The nervures are arranged nearly as in L. lutea Meig. 



TIPULA. 



T. ANNULICORNIS. — Pale ; antennse annulate with black. 



Inhabits Indiana. 



Body very pale honey-yellow : antennas with a black annulus 

 on each joint : palpi black at tip : wings immaculate : tergum 

 with obsolete, dusky, slightly undulated bands. 



Length under one-fourth of an inch. [152] 



PLATYURA. 



.P. SUBTERMINALI8. — Yellowish ; wings with a subterminal 

 band. 



Inhabits Indiana. 



Body entirely pale honey yellow : antennse, excepting the two 

 ba.sal joints, fuscous: ocelli with a small black areola : thorax 

 immaculate : wings with a slight yellowish tinge ; a blackish sub- 

 terminal band, occupying on the costal margin all the space 

 between the small cross nervure and the tip of the next long 

 nervure, and extending to the thinner margin : tergum a littje 

 more dusky than the thorax ; tibiae and tarsi dusky. 



Length three-twentieths of an inch. 



Nervures as in P. Baumhaueri Meig., but the small cross ner- 

 vure on the costal margin is perpendicular to the costal edge. 



[Vol. VI- 



