6 University of Michigan 



quently found crawling up the low sandy river banks during 

 the early morning hours. 



Aeschna verticalis Hagen. — This species occurred only in 

 open woods not far from the river. In the afternoon, individ- 

 uals were often noted resting on the sunny side of tree trunks, 

 but became more active toward sundown. 



Aeschna CQnadcnsis Walker. — The species was much asso- 

 ciated with the preceding, and had very similar habits. 



Aeschna constricta Say. — This species was rather rarer 

 than the two preceding, and of very similar habits. 



Aeschna crcinita Walker. — A single specimen taken on July 

 29 in open, sunny woods was the only record for the species. 



Aeschna intcrntpta Walker. — This species was found under 

 \ery similar conditions to the others of the genus. 



Tetragoneuria spinigcra Selys. — The few specimens ob- 

 tained of this locally rare species were all secured about a 

 meadow near the river. They were very active and wary, and 

 when alighting usually took a very inaccessible position. 



Somatochlora zvilliamsoni Walker. — This species was rath- 

 ei rare, and was usually seen in the woods and along small 

 streams. A female was observed ovipositing in a little brook 

 cm July 24. 



Somatochlora walshii Scudder. — The two specimens of this 

 species that were collected were both taken on an old logging 

 road in dense woods on July 24. 



Somatochlora minor Calvert. — This species was usually 

 found in the dense woods, especially along old roadways, but 

 was occasionally noted in the open. It was observed at inter- 

 vals thruout the month. 



Somatochlora forcipata Scudder. — This species was found 

 only on July 26, when several specimens were taken in the 

 deep woods. 



