No. 39] ODONATA OF CONNECTICUT: AGRIONIDAE III 



Abdomen : metallic green and black, the apical portion dull and 

 paler below ; tergum of segment lo with a mesal ridge produced 

 in a spine at the apex of the segment; ovipositor reaching the 

 middle of segment lo. 



Measurements : total length, male 51, female 46-49 mm. ; length 

 of abdomen, male 38-39, female 36-38 mm. ; length of hind wings, 

 male 32 mm. ; female 32-35 mm. ; width of hind wings, male 9, 

 female 9.5 mm. 



Variations According to Different Authors 



Length Abdomen Hind Wings 



Male 49-51 mm- 34-40 mm. 27-32 mm. 



Female 44-49 mm. 30-41.5 mm. 29-35 i^^^^- 



Connecticut. — Mount Carmel, 2 June, 1906, 6 June, 1908 (B. H. W.) ; 

 New London, 8 June, 1921 (R. H. H.) ; Litchfield, 5 July, 1909, 2, 4 July, 

 1916 (L. B. W.). 



New England. — May 10- July 21. 



Agrion amatum Hagen 



Psyche, 5: 244-245: 1889. 



Nymph. — Unknown. 



Adult, male. — Color metallic green and bronze. 



Head : dark green or metallic bronze ; labium pale at sides, 

 labrum pale with dark spots above and below on margins at 

 lueson ; first antennal segment pale ; rear of head angulate but 

 not as decidedly tuberculate as in apicale. 



Thorax : green, pale below, bluish pollinose in some specimens ; 

 legs black; wings with about the apical fourth brown in hind 

 wings only. 



Abdomen : metallic green, darker below ; anal appendages 

 black, the inferiors about three-fourths the length of the superiors, 

 the superiors in dorsal view with a blunt tooth just beyond the 

 middle on the mesal margin and with large spines on the exterior 

 surfaces. 



Female. — With a prominent spine and ridge on the dorsum of 

 segment 10. 



Measurements : total length, male 56, female 52 mm. ; abdo- 

 men, male 42, female 40 mm. ; length of hind wings, male 37, 

 female 38-39 mm. ; width of hind wings, male 8, female 8-9 mm. 



Description based on specimens in the Cambridge Museum of 

 Comparative Zoology. 



Connecticut. — Litchfield, June 30, July 4, 1913; 3 June, 1925 (L. B. W.). 



Agrion dimidiatum apicale (Burmeister) 

 Handbuch der EntomoLogie, 2: 827: 1839. 



Adult, male. — Color bright metallic green, wings tipped with 

 brown. 



