1878.] 271 ' [ Hagen. 
I possess the immature stages raised by Mr. K. T. Jones, of Port- 
land, Me. It is the smallest species of Cordulia known. 
AESCHNINA. 
28. Anax Junius Drury. Hae. Syn., 118, 1. 
No. 127. &, Gomphus Junius Drury, Milton. 
Massachusetts is the northern limit for this widely spread species, 
common throughout the United States, from the Atlantic to the Pa- 
cific, and in the West Indies, Mexico, Kamschatka, China, the Sand- 
wich and Society Islands. 
29. Epiaeschna Heros F. Hag. Syn., 128, 20. 
No. 13. 62°, Aeschna Heros F.; multicincta Say, Journ. Acad., 
Vol. 8, p.1. Milton, June 15-30, 1823, 6 2 ; Sept. 1822, 2; New 
York, Mr. Calverley, ?. 
Tn the collection is the pair from Massachusetts and the female 
from New York. Massachusetts is the northern limit known for this 
species. A description of Ae. Heros is given by Dr. Harris, Corresp., 
p. 326. 
30. Aeschna clepsydra Say. Hag. Syn., 122, 5. 
No. 45. $4, Ae. clepsydra Say Mss. (Say’s determ.). Milton, Aug. 
1, 1828; Cambridge, July, 1832 ; Aug. 15, 1836. 
There are two specimens in the collection; the other specimen in- 
dicated belonging to the next species. Perhaps a species with a 
northeastern habitat, common to Maine, Massachusetts, extending to 
New Jersey and Maryland, and in the west to Illinois, where they 
seem more rare. 
31, Aeschna constricta Say. Hag. Syn., 121, 4. 
No. 45..) 6: 
The specimen belongs to one of the three dates given above. 
The species is more common and more widely spread than the fore- 
going one. 
32. Aeschna janata Say. Hag. Syn., 125, 11. 
No. 2. $2, Ae. janata Say mss. (Say’s determ.). Milton, mead- 
ows, May 10, 1828; June, 1821; June, 1823. 
Say describes the species from Massachusetts, and adds, — “ sent 
tome by Dr. Harris. I have not seen the female.” Of course the 
specimen is to be considered as type. 
The species is very rare. I have never seen it in Europe, and 
even here only two pairs, one in Harris’ collection, the other in the 
