12 
13 
14 
15 
16 
SUBFAMILY LIBELLULINAE 203 
Fore wing generally with 10 or more antenodals. .Cannacria, p. 230 
Fore wing generally with 9 or fewer antenodals............ 13. 
Last antenodal before the nodus unmatched; heel of the anal loop 
eltorter gaan the'tOG. «. . cise sie cee ens © he Sympetrum, p. 231 
Last antenodal matched; heel equal to toe. .Leucorrhinia, p. 240 
Stigma with one or more cross veins under it, preceeding which 
IpeserATIe ADAGE: cle ear er bartrty. yes, a Pachydiplax, p. 244 
Stigma subtending two cross veins with normal interspaces. . . .15. 
Radial planate subtending one cell row; tibial spines normal... 
oR eee Te 5 OFC ga, in eae ee om Mesothemis, p. 246 
Radial planate subtending 2 cell rows; tibial spines few and very 
PREGE IES told nen ts os a eae Lepthemis, p. 248 
Bisector twice as far from A; as from Ag..... Dythemis, p. 248 
Bisector three times as far from A; as from Ag.............-. £7. 
Radial planate subtending 1 cell row. ...Brechmorhoga, p. 250 
Radial planate subtending 2 cell rows........ Paltothemis, p. 250 
Meio, PEDELY. CURVED a 25 coc s)ciavachs shed a fhe: yada ema wees 19, 
ETON Us MIN GUALE scp cnr 8 Ie ee eee ion ee Eee Pantala, p. 251 
Radial planate subtending 1 cell row...... Macrodiplax, p. 252 
Radial planate subtending 2 cell rows.......... Tramea, p. 253 
Nymphs 
Abdominal appendages strongly decurved; lateral spines wanting 
oP ofa terhelte APL co Siege Saka he phe cae deel alr bh Be 8a Mesothemis, p. 246 
Abdominal appendages straight or but very little declined; lateral 
Sp SEROUSEEWCOy 6 hog 0.0 19 (Alek SOM aba bh bbl hl tee ca ee Sram heh eae Bs 2. 
Eyes at sides of head, more lateral than frontal............... 336 
Eyes capping anterolateral angles of head, more frontal than 
| COLD) 22 | A AR RP eR Gh Ws Yu NTT Re AA TEEN FR ta: 
With a dorsal hook on the ninth abdominal segment........... 
Wd Be TR OREN uh Sen tera eke a Perithemis, p. 205 
With no dorsal hook on the ninth abdominal segment.......... 4, 
Worsalshoakapresentes: 62423 ce ee ead . s Seo Ss erenaeeee 5. 
Dorsalihooks absent i... bo ecd hes os. Po et 8. 
Spines of segment 9 very long.............. Celithemis, p. 208 
Spines of segment 9 short or moderate..............+++00e0- 6. 
Dorsal hooks as long as the segments which bear them........ 7. 
Dorsal hooks shorter than the segments which bear them...... 
PHA OP DEM I Sg ooking 8s «Oe Sympetrum, p. 231 
