122 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



about 1.3 mm. long-; genital lobes broad with small marginal 

 spines and delicate setae. 



Female. — Transverse stripes on abdominal segments 4-7 inter- 

 rupted on meson ; ovipositor 6.5 mm. long. 



Measurements : total length, male 66-75 ^n^- > length of abdo- 

 men, male 51-57 mm. ; length of hind wings, male 45 mm. ; width 

 of hind wing, male 11-12 mm. 



Connecticut. — Wallingford, 8 June, 191 1 (B. H. W.). 



Cordulegaster maculatus Selys 

 Bulletin de I'Academie royale . . . de Belgique (2), 21: 105: 1854. 

 Nymph. — Color dark brown. 



Head : labium with five lateral setae, and ten to eleven mental 

 setae on each side, the latter composed of six longer setae on each 

 side and four to five smaller ones ; teeth at apex of median lobe 

 each with a well-chitinized point directed laterad and the lateral 

 margins strongly incised ; mesal margins of the labial palpi each 

 with eight to ten strong teeth ; a projecting setose ridge present 

 between the antennae ; dorsum of the head behind the eyes finely 

 tuberculate. 



Thorax : legs hairy ; femora short, the hind femora not extend- 

 ing behind segment 3 of the abdomen ; wing cases extending to 

 the caudal margins of segment 3. 



Abdomen : segments 8 and 9 with small lateral spines not over 

 one-fifth the length of the segments; ovipositor extending almost 

 to the caudal margin of segment 9 ; terminal appendages of usual 

 form, the laterals slightly less than one-fourth the length of the 

 ventrals and the superior. 



Measurements : total length, 37-40 mm. ; length of lateral wing- 

 cases, 7-8 mm. ; length of hind femora, 6 mm. ; length of median 

 lobe of labium, 5-6.2 mm. 



Described from one male and one female exuviae from reared 

 specimens ; one collected at Derby and emerging May 30, 1926, 

 the other at Branford and emerging May 16, 1926. 



Adult, male. — Color brown, marked with yellow. 



Head: labium, postclypeus and sometimes dorsum of front 

 brown ; labrum yellow with brown ventral margin ; postclypeus 

 and cephalic surface of front yellow ; vertex and dorsal margins 

 of rear of head dark brown to black ; remainder of caudal surface 

 yellow; eyes meeting on dorso-meson in a single point, not sepa- 

 rated. 



Thorax : dark brown, with 3 yellow stripes on each side. Pro- 

 thorax dark brown, the caudal margin entire ; dorsal yellow stripes 

 cuneiform, 4 mm. long, upper end widest and measuring i mm. 

 across ; mesepimeral or first lateral stripe 5.5 mm. long by 1.2 mm. 

 wide, the sides parallel, ends rounded ; metepimeral stripe 5 mm. 

 long by 1.5 mm. wide, also with rounded ends and parallel sides; 



