ENTOMOLOGICAL NEWS. 429 
omiinae (— Synthemiinae*) but only the faunal 
Ta a, two in number, are considered and the contents of the 
~far m ly are not indicated. The genera segregated by his 
i aracter, the triangle of the hind wing placed consider- 
ly beyo the erculus, are not identical with the genera segre- 
ated by his second character, theanal loop well developed and 
ly longer than broad. The third character, with more 
2 cubito-anal cross-veins, like the characters on which 
the t > groups of de Selys were founded, is not a character 
ubich major groups can be based. In A Genealogic 
Se of Dragonfly Wing Venation, 1903, Needham indicates 
themis as belonging to the Macromiinac. 
orm for the present the three Corduline genera with 
i triangles in the front wings, on venational characters 
r eg oups of Cordulinae of approximately co-ordinate rank, 
may be defined. The contents of these groups are as 
a 
a L  Hemicordulia, Procordulia, Somatochlora, Paracordulia, Doro- 
, ia, Cordulia, Helocordulia, Tetragoneuria, Epicordulia and 
heca; represented in the Oriental, Australian, Ethiopian, Palae- 
" Nearctic and Neotropical regions, 
. Neurocordulia, Aeschnosoma and Libellulosoma; represented in 
e Nearctic, Neotropical and Ethiopian regions. 
' , Syncordulia, Neocordulia and probably Gomphoma- 
q fepresented in the Australian, Palacarctic and Neotropical 
— Iv. Nesocordulia, Idomacromia, Idionyx and probably Macromidia; 
* Ss repre d in the Ethiopian and Oriental regions. 
: - Epephthalmio, Macromia, Azuma, Didymops, Phyllomacromia 
id Synthemis ; represented in the Oriental, Australian, Ethiopian, 
retic and Nearctic regions. 
alac 
i 7 Some of - characters upon which this grouping is based 
7 iq M and Cu, j in front wing convergent. Group L 
M and Cu, in front wing parallel. Group III excepting Gom- 
= ? wy 
phomacromia. 
~My and Cu, in front wing slightly divergent. Groups II and IV 
and Gom phomacromia. ae ae 
Proc. U. S. Nat. Mus., vol. xxvii, i, page 608, foot-note a. 
ag at vtbg orderly arrangement of the genera within each 
4 owe 
F Fr 
