ECOLOGY OF NORTHERN MICHIGAN. 101 



3. Lycosa pratensis Em. IX. Several specimens were found in the 

 moss about the roots of the dwarf bkieberr}^ bushes on the Minong Trap 

 promontory, September 2. 



4. Xysiicus sp. IX. One specimen was taken in the same habitat as 

 the last, September 2. 



Mr. Banks remarks in a letter, concerning the collection, that these species 

 are all fairly common throughout the northeastern United States. 



3. DRAGONFLIES_ FROM THE PORCUPINE MOUNTAINS. 



1. Calopteryx aequabilis Say. IV. 2. A male was taken among the 

 alder bushes along Carp river, August 5, and a female flying up the river, 

 IV, 1, on August 12. 



2. Lestes unguiculatiis Hagen. II. 3. A male was taken in the clearing 

 on August 12. III. 2. Two females were taken on the "bald" crest of the 

 first range, resting on goldenrods, July 18. IV. 2. One male was taken 

 on a Cassandra bush in the valley of Carp river, August 5. 



3. Nehalennia irene Hagen. V. .2. A female was collected on a grass 

 stem on the delta of Carp river, August 12. 



4. EnaUagma hageni Walsh. V. 2. Twenty-one males and one female 

 were taken on the delta of Carp river, on August 12, and four males on July 

 21. This is the only station at which this form was observed. It occurs 

 here, however, abundantly, and is the characteristic species of this marsh. 



5. EnaUagma carunculatum Morse. V. 2. A single specimen of ihis 

 form, a male, was taken on the delta of Carp river, August 12. 



6. EnaUagma sp. V. 2. A male was taken on the delta of Carp river 

 on August 12. 



7. Ischnura verticalis Say. V. 2. A female was taken on the delta of 

 Carp river, July 21, resting on a grass stem, and a male and female in the 

 same locality on August 12. 



8. Hagenius hrevistylus Selys. V. 1. Only one specimen of this form 

 was collected, a female taken on "Carp Lake, on an alder branch overhanging 

 the water, August 10. 



9. Gomphus spicatus Hagen. A male was taken in the clearing, 

 II. 3, on July 16, a female, flying about among the cassandra bushes on the 

 flood-plain of Carp river, IV. 2, August 5, and five males on the delta of Carp 

 river, V. 2, July 21. The habitat of this form seems to be the marsh and 

 river. The specimen taken in the clearing was the only specimen observed 

 away from water. 



10. Aeschna clepsydra Say. I. Several individuals resembling this 

 form were observed, flying back and forth along the beach of Lake Superior 

 on July 30. II. 3, 4. Two males and two females were taken about dusk 

 on July 16, flying about the clearing and in aiid out among the surrounding 

 aspens. V. 2. A male and female were captured in coitu among the grasses 

 and sedges on the delta of Carp river, on August 8. IV. 1. Individuals 

 resembling this form were often seen in the evening, flying up and down 

 Carp river, and along Little Carp river, VII. 3, and over the lake, VII. 1, 

 on August 3. This species seemed to occur generally along the streams, 

 except in the evening, when it was also observed flying back and forth in 

 the woodland clearings. The individuals ^een flying over Little Carp Lake 

 often made sudden swerves close to the surface, and nearly every time, 

 as they flew upward again, they were followed by the snout of a hungry 

 dace, but in no instance observed was the fish successful. 



