26 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
la —lamina sub-analis pm —pleurostoma 
lbp —labial palpus pms —pleurostomal suture 
Iced —laciniadentes poc —postocciput 
Igs —ligular seta pocs —postoccipital suture 
Ihs —lateral suspensorial arm Pp  —paraproct 
lig —ligula pr —precoxale 
Ik M—lateral keel prm —prementum 
Im —labrum prs —premental seta 
Ips —lateral palpal seta ps —poststernum 
Is | —laterosternite psc —prescutum 
Isc —lateral cervical sclerite psm —postmentum 
Isp —lateral spine pt —plantella 
M -—nmedian trachea pta —posterior tentorial arm 
md —mandible R  —radial trachea 
mh —movable hook Rs —radial sector trachea 
mo —tmolar surface s  —scape 
mps —median palpal seta sa —lamina supra-analis 
ms —median sternite Sc —subcostal trachea 
mth —mouth scl —scutellum 
mx —maxilla scs —sternacostal suture 
n —notum sct —scutum 
nd —nodal region sp —spiracle 
ohs —oral suspensorial arm st —stipes 
ol —outer lobe stn —sternum 
os —ocular suture ta —tergal apophysis 
osc —ocular sclerite tb —tibia 
p  —pedicel ths —transverse suspensorial bar 
par —parietal lobe tr —trochanter 
pe —postclypeus ts —tarsus 
pf —palpifer un —ungue 
pfs —postfrontal suture ut —wunguitractor plate 
pge —postgena va —valvulae 
pls —pleural suture w —wing 
REFERENCES 
Amans, P. 
1881. 
Recherches anatomiques et physiologiques sur la larve de l’Aeschna 
grandis. Rev. Sci. Nat. Montpellier, ser. 3, vol. 1, pp. 63-74, I pl. 
ASAHINA, S. 
1954. A morphological study of a relic dragonfly Epiophlebia superstes, 
Japan Soc. Pres. Sci. Tokyo, 153 pp., 71 pls. 
CALVERT! PsP. 
1893. Catalogue of the Odonata of the vicinity of Philadelphia, with an in- 
troduction to the study of this group of insects. Trans. Amer. Ent. 
Soc., vol. 20, pp. 152-272, 2 pls. 
CuHao, H. F. 
1953. The external morphology of the dragonfly Onychogomphus ardens 
Needham. Smithsonian Misc. Coll., vol. 122, No. 6, 56 pp., 50 figs. 
