10 
it 
12 
13 
14 
15 
16 
Li 
GOMPHUS 87 
Thoracic stripes of the first pair widened forward, together forming 
EO TUE ATIC <<.) os. Saco eis PRD aie okt Gd ne EE 4, 
Thoracic stripes of the first pair parallel sided............... 5. 
SEPP PeH La uaTOL |) MATTOW.. <s50.ub.s Aas cipithes sy ulelecas parvidens, p. 89 
SBIRCRL SAG ) DEORG 6 hd chart uk ch a ua 2 wea niaelh easter alleni, p. 89 
Labrum with a median longitudinal black line...... brevis, p. 88 
Labrum with no median longitudinal black line. . viridifrons, p. 89 
Pacecerass lined -with Dinckvy: isis, ee chs te Bhs ns Ae os eae ae 
Face not cross lined. with, black)... o20..4) s scce soeleions doko aches 12. 
Expanse more than 80)mini.. «sis si4 ) 2 S 2 en 8. 
iBepancse less ‘than (/ Sammi. witha A i chin ania: (lee orl 9. 
Stripe 4 continuous; sides of stripe 1 diverging; frontal stripe a 
pec: amd)a 2 acre ee Se see te Ai eet dilatatus, p. 97 
Stripe 4 interrupted; sides of stripe 1 parallel sided; frontal stripe 
@ narrow lines 5.440 Me SES AL Ain, eee fae, 2h a lineatrifrons, p. 98 
Stripes 1 and 2 confluent at lower end; no median stripe present on 
VES a Cees cecgee ae a kes Ma oe oe a LS IRE ee Dan GR a 10. 
Stripes 1 and 2 not confluent at lower end; median stripe present on 
FREI 75 Pcie Cs re eee aes, ee ink ace et ae opie eee 11. 
Clypeus black; stripe 2 and 3 conjoined; stripe 5 present 
Se Se er oe es nya Seo eee scudderi, p. 95 
Clypeus yellow; stripe 2 and 3 free; stripe 5 wanting 
a oi ER ee OT eee es amnicola, p. 95 
Stripes 2 and 3 separate below................... vastus, p. 95 
Stripes 2 and 3 conjoined below................ adelphus, p. 94 
Dilatation at end of abdomen wider than thorax; stripe 5 wanting 
SOS VSR ie Oe are MERE See ey tale ventricosus, p. 97 
Dilatation not wider than thorax; stripe 5 more or less present 13 
Sipe 4wanting: club narrow. - 2) eee G ee ee eee 14. 
Stripe 4 more or less present; club broad................... 15. 
Stripes 2 and 3 separate; abdominal segment 9 partly yellow 
Spit |) ec 5 Oe Ea Dee PS EDP od confraternus, p. 92 
Stripes 2 and 3 fused; 9 above wholly black. ......donneri, p. 94 
Mibiae yellomy excernally’. oo. stoke lca Be ad te oe externus, p. 90 
ibiae DIACka Fe oh esse si.) c otto | oy vn se ee ee 16. 
Femora of male partly yellow... ...:.........0.8 crassus, p. 92 
Bemortaot maleipiackas 32... . : 2. ba eae 17. 
BCP GSe CORON ote reeset) sk Saddwk on ee ee fraternus, p. 90 
Beapanse: G0: MM acorn nce. avers oo ee hybridus, p. 90 
