36 



houses before storms, and is commonest in May and early sum- 

 mer, being found along roads, in open woods, or over fields or 

 water — wherever it may capture flying insects. 



We have not seen the nymph, but Mr. Needham has com- 

 piled from Cabot's description and figure ('81, p. 30, PI. I., Fig. 3) 

 the following characters. 



The nymph is 40 mm. long. 



The head is deeply concave behind l)etween the rounded 

 hind angles Of the acute and approximated supracoxal proc- 

 esses, the anterior process is the longer. Median lobe of labi- 

 um slightly notched at middle, the borders of the notch varia- 

 ble. Lateral lobes truncate on the end, denticulate within. 

 Lateral spines on abdominal segments 5 to 9. Appendages 

 equaling segments 9 + 10; laterals .slightly more than half as 

 long as the inferiors, which are a little longer than the supe- 

 rior. The tip of the latter is blunt. 



III. BoYERiA McLachl. 



In appearance, structure, and habits this is much like the 

 preceding genus. The imagos of the single North American 

 species are not very large. They have a small brown spot 

 at the base of each wing, reddish veins, and a yellow ptero- 

 stigma. 



Boijeria vinosa Say. 



Fonscolombta vinosa, Calvert, '93, p. 247. 



Neurceschfta furcillata, Cabot, '81, p. 2g, PI. II., Fig. 3 (male nymph). 



Gomphcrschna furcillata, Cabot, '81, p. 28, PI. II., Fig. 4 (female nymph). 



A single exuvia was found by Mr. Needham attached to 

 the under side of a plank, several feet above the water, at 

 McHarry's mill-dam on Quiver Creek, in June. He has col- 

 lected nymphs since in the rapid streams about Ithaca, N Y- 

 Another nymph was taken by Mr. Hart in April, clinging to 

 floating driftwood in Quiver Creek below the mill-dam. Like 

 i\^. pe7itacantha, it is dark colored and sluggish, and appears to have 

 similar habits. Kellicott ('96, p. Ill) found the imagos quite 



