No. 39] ODONATA OF CONNECTICUT: COENAGRIONIDAE 79 



Three male specimens received from Mr. Wm. T. Davis, and 

 collected at Wyandanch, Long Island, New York. No females 

 of this species have been seen ; all supposed females thus far 

 examined have proved to belong to other species. 



Group 4 ExsuLANS-TRAViATUM Group 



Enallagma divagans Selys 



Bulletin de I'Academie royale . . . de Belgique, 41 : 521 : 1876. 



Nymph. — Unknown. 



Adult, male. — Color blue and black. 



Head : face blue to the level of the antennae, except the post- 

 clypeus and spot on labrum, which are black; postocular spots 

 large, blue, very narrowly separated from the postocellar stripe; 

 rear of head mostly pale, black on each side of the occipital 

 foramen. 



Thorax: pronotum mostly black, the cephalic lobe, a spot on 

 each side of the median lobes, and a spot on middle and one on 

 each side of the caudal lobe, blue; meso- and metathorax blue, 

 the black stripe of the mesopleural suture a trifle wider than the 

 pale stripe of the episternum, the pale stripe widened a little at 

 both ends, narrowed at middle ; legs pale, the femora each with a 

 black dorsal stripe, the tibiae pale with a faint streak on the front 

 and middle tibiae, the hind tibiae with only a faint row of dashes ; 

 tarsal segments and claws pale, darker at tips ; wings with M^ 

 usually arising between the third and fourth postnodal cross-vein 

 in the hind wings. 



Abdomen: mostly black, blue on sides; 1-7 inclusive, black 

 above ; dorsal black stripe of 2 widened subapically ; terga 8 and 

 9 entirely blue except sometimes a small spot at base of 8 on the 

 dorso-meson ; 10 black above, blue on sides ; anal appendages 

 dark brown or black, the superiors in lateral profile not distinctly 

 bifurcate, but with a lobe extending ventrad (Fig. 10, No. 27). 



Female. — Color similar to the male. 



Thorax : mesostigmal plates similar to those of exsulans except 

 that the caudal margins are more nearly at right angles to the 

 meson. 



Abdomen: eighth tergum black with two pale blue spots on 

 the caudal margin ; sides sometimes pale also ; 9 with two short 

 dorso-lateral black stripes or triangular spots which fuse at the 

 base on the meson ; 10 blue. 



Measurements : total length, male 29-33, female 32 mm. ; length 

 of abdomen, male 24-28, female 26 mm. ; length of hind wings, 

 male 17-18, female 18 mm.; width of hind wings, male 3-3.5, 

 female 3.5 mm. 



Connecticut. — Hamden, 11 June, 1927 (P. G.). 



