ECOLOGY OF ISLE ROY ALE. 263 



swamp-land species which usually flies slowlj' among the low vegetation. 



Geographic Range. Ontario; Maine; New Hampshire; ]\Iass. ; New 

 Jersey; Florida; New York; Penn. ; Ohio; Indiana; Illinois; Iowa; Wis- 

 -consin; South Dakota; Ann Arbor (Kavanaugh Lake, YII, 3, '03), 

 Porcupine Mts., Mich. 



Eii.allagma exsulans Hag. One male was taken flying over the water 

 near the boat landing at Lake Desor (YII, '04) on August 20. 



Geographic Range. Ontario; Maine; New York; Penn.; Maryland; 

 District of Columbia; Virginia; Ohio; Indiana; Illinois; Missouri; 

 Texas; Oorunna, Huron River, near Portage Lake, Aug. 31, '03, Wash- 

 tenaw Co., Kavanaugh Lake, July 10, '03, Chelsea, Mich. 



Enallagma hageiii Walsh. This species was quite abundant about the 

 sedge margin of Sumner Lake (III, 5) where eight males were taken 

 between July 24 and 29. Three other males were taken on August 16 

 in the cassandra and sedge zone about a pond near Siskowit Bay (V, 11). 



Geographic Range. Newfoundland; Quebec; Ontario; Maine; New 

 Hampshire; Mass.; New York; Delaware; Maryland; Ohio; Indiana; 

 Illinois; Iowa; Missouri; Wisconsin; South Dakota; (July 10, '03, Kav- 

 anaugh liake) Chelsea, Porcupine Mts., Mich. 



Gomphidae. 



Ophiogomphus coliihriniis Selys. One female was taken, August 7, 

 flying low, at the outlet of Siskowit Lake (V, 9). This stream falls rap- 

 idly providing a rapid water habitat which furnishes favorable condi- 

 tions for most Gomphids. The streams on the island are small and flow 

 through milch swamp land so that there is but a slight development of 

 the rapid water habitat. 



Geographic Range. Hudson Bay ; Quebec ; Maine ; New Hampshire. 



Aeschnidac. 



Anax Junius Drury„ Nymphs only were taken. Cf. Needham report. 



Geographic Range. Central America northward to Newfoundland and 

 Alaska; Bermudas; West Indies; Hawaiian Islands; Tahati; China: 

 Kamtschatka. This is a very extensive range, quite exceptional among 

 Dragonflies, and perhaps only surpassed by the cosmopolitan Pantala 

 flavescem. 



Aeschna sitchensis Hag. One female was taken along the road through 

 the hardwoods on the Desor trail (III, '04) on August 21. (Psyche, 

 1890, p. 353). 



Geographic Range. Sitka, Alaska; Saskatchewan; Newfoundland; 

 (Williamson, '06, p. 135) ; Pequaming, Michigan, Calvert^ Ent. News. 

 15, p. 288. 



Aeschna species? The remaining Aeschnids cannot be satisfactorily 

 determined at present. A male was taken in the sedge and cassandra 

 zone bordering a pond (V, 11) on August 16. A male, which had been 

 patrolling a small stream flowing from a tamarack swamp (V, 5), was 

 taken on August 8. A teneral female was taken July 13 on a rock ridge 

 (I, 2) and in the clearing about the camp on Siskowit Bay (V, 3) (231) ; 

 one male was taken August 15, and a female on Aiigust 12. Eight males 

 were taken at Sumner Lake (III, 5) between July 26 and 29. A female 

 was taken in a rock clearing near the light-house (I, 2) on July 13 (69). 



