NO. 
II 
NAIADS OF DRAGONFLY GENUS PLATHEMIS—LEVINE 
25 
News, vol. 18, p. 232, 1907——Muttkowski, Bull. Publ. Mus. Milwaukee, 
vol. 1, p. 142, 1910—Needham and Heywood, Handb. Dragonflies North 
America, p. 230, 1929—Needham and Westfall, Man. Dragonflies North 
America, p. 502, 1955. 
Libellula subornata Brauer, Verh. Zool.-Bot. Ver. Wien, vol. 18, p. 730, 
1868.—Ris, Coll. Selys Libell., p. 263, 1910. 
DISTRIBUTION AND DATES 
Plathemis lydia: A very common and widely distributed species, inhabiting 
British Columbia, New Brunswick, Nova Scotia, 
Ontario, Quebec. Unirep States: 39 States, with the exception of Arizona, 
Delaware, Maryland, Montana, Nevada, North Dakota, Oregon, South Dakota, 
Wyoming. April 18 (Miss.) to October 16 (Tenn.). 
Plathemis subornata: A western species, inhabiting swales and seepage pools 
in desert and semidesert areas. CANADA: British Columbia. Unirep States: 
Arizona, California, Colorado, Kansas, Nebraska, Nevada, New Mexico, Oregon, 
Texas, Utah. Mexico: Chihuahua, Sonora. April (Calif.) to October 16 (Tex.). 
mucky ponds. 
io. Go 
—_ Oo w 
CANADA: 
—coxal articulation 
—coxal cavity 
ABBREVIATIONS 
—anal trachea cxp —pleural coxal process 
—abductor tendon de —disticardo 
—anteclypeus dh —dorsal hook 
—adductor tendon dps —distal palpal setae 
—anepisternum dpt —distal palpal tooth 
—articular rod of labium dsc —dorsal cervical sclerite 
—anus dta —dorsal tentorial arm 
—antenna dts —distitarsus 
—antennal suture em —epimeron 
—antennal sclerite emp —empodium 
—anterior tentorial pit ep —epiproct 
—anterior tentorial arm es —epistomal suture 
—acrotergite et —episternum 
—axillary cord eye —compound eye 
—basicardo f{ —flagellum 
~ —hbasicostal suture fe —femur 
—basicoxite : fp | —furcal pit 
—basisternum fr —frons 
—cercus fs —furcasternum 
—clypeus ge —gena 
—clypeolabral suture gn —accessory genitalia 
—condyle gp —genital pore 
—coronal suture hap —hypopharyngeal apodeme 
—clypeal suture hy —hypopharynx 
—corporotentorium igm —insertions of gnathal muscles 
—cubital trachea il —inner lobe 
—coxa in —<incisor lobe 
kem —katepimeron 
ket 
—katepisternum 
