OF PHILADELPHIA. 43 



TANYPUS Meig. 



1. T. ANNULATUS. — Tergum annulate with dusky; wings 

 clouded with dusky and with three or four blackish points. 



Inhabits Pennsylvania. 



Head and stethidiuni red-brown ; thorax, the anterior dilated 

 line with a brown line along its middle ; feet white, thighs 

 having an annulus near the tip, and tibia with one at base and 

 two near the tip fuscous ; wings with large obsolete dusky spots 

 or clouds, and three or four black-brown points, of which two 

 are towards the middle of the wing, and the remainder on the 

 costal margin near the tip; tergum, segments with a dusky an- 

 nulus at their bases. 



Length about three-twentieths of an inch. $ . 



2. T. TIBIALIS. — Thorax reddish-brown; tibia white [16] at 

 base ; abdomen white, a double band on the middle and tip black. 



Inhabits Pennsylvania. 



Wings immaculate ; poisers white ; feet fuscous, basal half of 

 the tibia white; tergum, second joint with a spot each side, two 

 middle segments with each a band, of which the anterior one is 

 much broader, and terminal segments deep fuscous ; pleura yel- 

 lowish. 



Length % more than one-twentieth of an inch. 



CORETHRA Meig. 



C. PUNCTlPENNis. — Whitish ; wings and feet punctured with 

 fuscous. 



Inhabits Pennsylvania. 



Hair of the antennae yellowish-white, the centres of the whorls 

 being fuscous, the shaft of the antennae has a decidedly annulated 

 appearance ; eyes black ; thorax with three pale yellowish-brown 

 abbreviated broad lines, the middle one originating before and 

 terminating at the centre of the disk, the lateral ones originating 

 rather before the middle ; feet with numerous small brown punc- 

 tures ; wmgs with many very obvious brown spots. 



Size of C. culiciformis Degeer, Meig. 



MYCETOPHILA Meig. 



M. ICHNEUMONEA. — Pale yellowish-brown ; wings with a fus- 

 cous spot ; tergum dusky above. [17] 



Inhabits Pennsylvania. 

 1S23.] 



