HOWE: NEW ENGLAND ODONATA 127 
jNIissoiiri Rivers. Species that are transcontinental always occupy 
in the Rocky Mountains relatively higher altitudes when in the 
same latitude in the Appalachians. These species are not found 
on Cape Cod beyond the morainal barrier, except for a straggling 
record for two species. The wide ranges of the remaining north- 
ern species, and the fact that the southern species followmg find 
New England the northern limit of their ranges, make it unnec- 
essary to give stations and elevations outside New England in 
the present paper. No doubt for the foregoing species not all 
published stations have been listed, but those that are given are 
typical of the species. 
63. Lestes inequalis, east-central, spring and summer. 
64. Lestes uncatus, transcontinental, spring and summer. 
65. Enallagma carunculattun, transcontinental, summer. 
66. Enallagma ebrium, transcontinental, perhaps having only just recently 
extended its range across the Rocky Mountains into Washington, spring 
and summer. 
67. Enallagma hageni, east-central, spring and early summer. The southern 
records for this species may refer to C. recurvatum Davis. 
68. Amphiagrion saucium, transcontinental, spring. There exists one isolated 
Louisiana record. 
69. Hagenius brevistylus, east-central, spring, summer, and earlj^ autumn. 
70. Boyeria vinosa, east-central, summer, and autumn. One Truro record, 
on Cape Cod. 
71. Basiaeschna janata, east-central, spring. 
72. Tetragoneuria spinigera, transcontinental, spring. 
73. Libellula quadrimaculata, transcontinental, and holarctic, spring and 
summer. 
74. Leucorrhinia frigida, transcontinental, spring and early summer. There 
is one Cajic Cod record (at Hyannis). 
The following sixteen largely transcontinental species have 
similar ranges to the last, but are found on Cape Cod commonly, 
and also in most cases on the outlying islands, — Nantucket and 
Martha's Mncyai'd. They appear for many reasons to be boreal 
species which were pushed southward by glacial invasion. 
7.5. Nehalennia Irene, east-central, spring and summer. The one Florida 
record needs confirmation. 
76. Lestes congener, transcontinental, summer and autunni. 
77. Lestes disjunctus, transcontinental, spring, siunmcr and autumn. 
78. Lestes unguiculatus, transcontinental, spring, summer and autumn. 
79. Aeshna canadensis, transcontinental, summer and autumn. 
80. Aeshna umbrosa, transcontinental, sunnner and autunm. 
