128 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY 
81. Libellula exusta, transcontinental, spring and early summer. The Florida 
and Cicorgia records probably refer to the species rather than to the 
variety (the latter seeming to be more nor t hern j thougli they need con- 
firmation. 
82. Libellula exusta julia, transcontinental, spring and early summer. This 
variety's range, because of its very recent definite recognition, is little 
understood. 
83. Sympetrum obtrusum, transcontinental, summer and autumn. 
84. Sympetrum rubicundulum, east-central. Possibly confused with the more 
northern dccisum for it is recorded in the White Mountains from 4,000 feet. 
The examination of a very large series of New England specimens fails, 
however, to establish this fact. In no New England specimen examined 
does the yellow at the base of the wings reach the first antecubital, a 
characteristic supposedly typical of rubicundulum, and the bifurcation of 
the hamule always occupies one-third its length, and not one-fourth only 
as attributed to decisum, and as found in obtrusum. 
85. Sympetrum scoticum, transcontinental, but one New England record. 
86. Sympetrum semicinctum, transcontinental, summer and autumn. 
87. Sympetrum vicinum, transcontinental, summer and autumn. 
88. Leucorrhinia Intacta, transcontinental, spring and early summer. 
89. Sympetrum costiferum, transcontinental, summer and autumn. 
90. Sympetrimi atripes. Here also may belong this little-known species re- 
corded only from Wyoming, Wisconsin, and New Hampshire (see Ent. 
News, 32 : 80-82, 1921). 
The following two species inhabit mountain elevations 1000 to 
3000 feet with occasionally lower interior Maine stations (200 
ft.), and again occur after a wide hiatus, on Nantucket, and along 
the coast from Provincetown to Rhode Island. The second is 
also known from West Point (10 ft.), N. Y., and Ramsey (347 ft.), 
N. J. These now isolated stations are perhaps a relic of the early 
land connection with Newfoundland. 
91. Enallagma calverti, transcontinental, spring. 
92. Enallagma cyathigerum, transcontinental, and holarctic, spring. 
Southern or Austral Species 
The austral species common to New England, of which thirteen 
are transcontinental, number seventy-three. If the flight period 
does not occupy two seasons it is generally confined to the sum- 
mer, — a natural austral correlation. 
The following nine east-central or transcontinental species are 
found throughout New England save in elevations above 1000 to 
