APPENDIX. 359 



To this species the name of ocellata would perhaps be 

 more appropriate than it is to the Linnsean species of that 

 name, inasmuch as in the latter the ocellag are epupilate. 

 It is a very pretty insect, and exhibits much singularity 

 in the arrangement of the nervures of its wings, the penul- 

 timate and ultimate nervures being connected by a trans- 

 verse nervure which arises from the tip of the latter. In 

 other respects the distribution of the nervures are similar 

 to that of the bifasciata, Fabr, Wied. 



TIPULA, Linn. Meig. 



T. maculatipennis. Cinereous ; thighs black at tip ; 

 wings dusky with white spots. 



Inhabits North-west Territory. 



%fintennsR yellowish, incisures of the joints dusky ; palpi 

 blackish ; thorax with two, brown, dorsal lines, which are 

 confluent on the anterior margin, attenuated behind, and 

 abbreviated behind the middle ; a lateral line slightly in- 

 terrupted in its middle, and hardly reaching the anterior 

 or posterior margins ; scutel dull honey-yellow, with a 

 black line ; wings dusky, with a black carpal spot margin- 

 ed with white, three or four white spots along the central 

 nervure, and about as many near the termination of the 

 ultimate nervure ; poisers white, dusky at tip ; abdomen 

 blackish ; incisures edged with whitish ; thighs with a very 

 obvious blackish tip. 



Length to tip of the wings ? seven-tenths of an inch. 



PTYCHOPTERA, Meig. 



P. ^-fasciata. Wings hyaline, with four brown bands 

 Inhabits Pennsylvania. 



