114 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY 
The twenty-eight species whose ranges are abruptly terminated at 
this line, of which sixteen are northern, are indicated in the dia- 
gram below, and in the following lists (boreal species in italics). 
'a 
24 
o 
o 
25 
^ 
c3 
-1^ 
26 
02 
27 
^ 
^ 
fe 
-4^ 
CO 
1 
(U 
(-] 
2 
3 
3 
o 
tc 
4 
? 
5 
6 
g 
3 
7 
02 
bC 
8 
g 
9 
> 
10 
o 
11 
12 
13 
_o 
"m 
14 
■eS 
15 
C 
S 
16 
tH 
O 
17 
s . 
18 
19 
OJ 
;_ 
CO 
20 
21 
"3 
O 
22 
Inteulobate Moraine 
Manomet Hill, 400 feet 
Lestes inequalis 
Enallagnia vesperum 
Sjjmpetrum semicincium 
23. 
28. 
One Truro record 
Agrion aequabile 
Agrion maculatiim 
Lestes eurimis 
inequalis 
Enallagma pictum 
Amphiagrion saucium 
Anomalagrion hastatum 
Cordulegaster diastatops Pine Hill, 280 feet 
Hagenius hrevistylus 
Boyeria vinosa 
Basiaeschna Janata 
Didymops transversa 
Dorocordulia libera 
lepida 
Somatochlora tenebrosa 
Libelhda quadrimaculata 
Plathemis lydia 
Sympetrum semicinctum 
Leucorrhinia frigida 
Pantala fiavescens 
Celithemis eponina 
Lestes ewinus 
Ischnura ramburi 
Anomalagrion hastatum 
Chromagrion conditum 
Epiaeschna heros 
Dorocordulia lepida 
Libellula luctuosa 
Libelhda exusta 
quadrimaculata 
Plathemis Ij^dia 
Libellula vibrans 
Cehthemis eponina 
Woods Hole 
Wareham One wind-carry (?) Chatham 
record 
Sagamore 
One Chatham record 
One Hyannis record 
Probably occurs commonly, but 
not as yet recorded 
One Chatham record 
i 
o 
