CALOPTERYX. 51 



cilia; wings narrow, liyaline, or with the apex narrowly fuscous. 

 (Male.) Twenty antccubitals. Pterostigma absent. 



Length of body 42 millira. Alar expanse 62 millim. 



Ilab. Philadelphia; Massachusetts (Scudder). 



3. C. dimidiata! 



Calopteryx d{tnidiata'BxiTVQ..\ Handb. II, 826, 16. Selys ! Sjnops. Calopt. 

 10, 4. Monog. Calopt. 25, 4. Walk. Catal. 591, 4. — Calopteryx cog- 

 nata Ramb.! Neuropt. 222, 6. — C. syriaca Ramb.! Neuropt. 223, 9. 

 (In part. Male.) 



Brassy-green or blue, shining; labium, antenna?, thoracic sutures, 

 pectus, venter, and feet black; wings narrow, somewhat flavescent, 

 the apex fuscous ; pterostigma of the female snow-white, Male 

 30 antccubitals; female 20 antccubitals. 



Length of body 40 — 45 millim. Alar expanse 54 — 56 millim. 

 Pterostigma li millira. 



JIab. Kentucky ; Georgia ; Pilatka, St. John's River, Florida 

 (Osten Sacken). 



4. C. maculata! 



Agrion maculata Beauv. 85 ; tab. vii, fig. 3. — Calopteryx maculata Biirm.! 

 Handb. II, 829,17. Selys ! Synopt. Calopt. 10,5 Selys ! Monog. 

 Calopt. 27, 5. Walk. Catal. 592, 5. — Calopteryx holosericeus Burm.! 

 Handb. II, 828,13. Ramb. Neuropt. 226,14. — Calopteryx papilio- 

 nacea Ramb.! Neuropt. 222, 6. — Calopt. opaca Say, Jour. Acad. 

 Pbilad. VIII, 32, 2. 



Brassy-green or blue, shining; labium, antenna?, thoracic sutures, 

 pectus, venter and feet black; abdomen with a dorsal yellow stripe 

 upon the 8th to the 10th segment (?); wings very broad, densely 

 reticulated, black, sometimes with hyaline spots (<^), or clouded 

 with fuscous and fuscous at the apex, with a snow-white pterostig- 

 ma (female) 19 — 28 antccubitals. 



Length 38 — 48 millim. Alar expanse 63 — 65 millim. Ptero- 

 stigma 2 — 2^ millira, 



Ifab. Chicago (Osten Sacken) ; Maryland (Uhler) ; Washing- 

 ton; Trenton Falls (Osten Sacken); Philadelphia; Massachusetts; 

 Dalton, Georgia (Osten Sacken); Carolina; Ohio; Pilatka, Flo- 

 rida (Osten Sacken). 



A species common all over the Union. 



