84 DRAGONFLIES OF NORTH AMERICA 
32 Stripes 4 and 5 entirely wanting; expanse 72...olivaceous, p. 100 
Stripes 4 and 5 present, at least in part; expanse less than 70. .33. 
33 . Stripe. 5 better developedithani4 sues n me Si eo 34. 
Stripe 5 not better developed than 4... 22. ..22.02..6... 0.060. 38. 
34 -Expanse 52644 o/s) ewe iia, Babee eee abbreviatus, p. 89 
Expansesmore than: 60). (05.260 eye renee he nae a 35. 
35: Stripe 4. wanting 02 eel pe ay ee a 2 36. 
Stipe 4 partially present. <5: . ssidheed ge eta eee 37. 
36 Stripes 2 and 3 separate; abdominal segment 9 partly yellow 
go etapa ¥ Ie Yl laa ds ace et a Wee ta oS al a iN re re confraternus, p. 92 
Stripes 2 and 3 fused;9 above wholly black....... donneri, p. 94 
av: Femora of malepartly yellow...) 4<ui4ous aon Gee crassus, p. 92 
Femora,of madle. bide!) 05s ive Se a eee fraternus, p. 90 
38 Stripes 4 and 5 about equally developed................... 39. 
Stripe 4 better developed than 5.0 2. .).-2..%°.c8. see eee 41. 
oo. expanse more than’ GOb:. . 2.0" aac ales Ss ee rr 40. 
i Us 175 0) oT Sig 2 aaa ae gr ALA A Ce pe PT ES quadricolor, p. 111 
40 Legs all black; black points on occiput........ descriptus, p. 109 
Base of femora yellow; occiput yellow........... borealis, p. 110 
41,5, Stripe Avwell developed... 5 0.00. 3S ics. bids «ian eo ae 42. 
Siripe 4 mcomplete:... ..) 4.0 u's 2 <= auth soickuers coated eee 44, 
42 Stripes 1 and 2 fused above collar.............. spicatus, p. 108 
Stripes 1 and 2 not fused above collar. (03... ap eee 43. 
AS MEPEIAISE Ay eo lie toe os pe Suk So cmes yk: Sene Re cavillaris, p. 105 
IRPANSE GO 2s. 8 os ase = > ong Aver RG eae australis, p. 109 
44°) Baseigt femora black. 3): \. 4... saad bus ator hybridus, p. 90 
Base of femora yellow. o14 sis. aces aaeraee ventricosus, p. 97 
Adults 
Name H. fem. Hamules? Abd. 83 Club of abdomen 
Gomphurus alike variable variable mostly wide 
Gomphus alike erect square cut moderate 
Stylurus alike aslant forward square cut narrow 
Arigomphus unlike aslant backward oblique moderate 
1 Hind femora of male and female. 
? Slant of posterior hamules of male. 
3 Apical margin of eighth abdominal segment. 
