248 CONNECTICUT GEOL. AND NAT. HIST, SURVEY [Bull. 



extends to the distal end of the triangle. Two specimens from 

 Deep River, Connecticut, agree with this, but the abdomen is not 

 pollinose. 



Connecticut. — Var. julia. — New Haven, 27 May, 1903 (B. H. W.) ; 

 Colebrook, 19 June, 1920 (P. G.) ; Hamden, i June, 1921 (W. E. B.), May, 



1922 (P. G.) ; New London, 7-15 June, 1921 (R. H. H.) ; Mansfield, May, 



1923 (L. B. P.) ; Litchfield, 20 June, 1908, 8 July, 1909 (L. B. W.). 



Var. exusta. — New London, 6-16 June, 1921 (R. H. H.) ; Deep River, 

 I June, 1923 (P. G.). 



New England. — May-July. 



Libellula luctuosa Burmeister^^ 



Handbuch der Entomologie, 2 : 861 : 1839. 



Nymph. — Head : labial or lateral setae seven ; mental setae 

 eight ; teeth of the palpi very shallow. 



Thorax: wing-cases extending to abdominal segment 4, hind 

 femora to 5 in full-grown specimens. 



Abdomen : dorsal spines on segments 2 to 8 ; with few or no 

 long hairs as in pulchella. 



Measurements: total length, 21 mm.; length of abdomen, 11 

 mm. ; hind femora, 5.5 mm. 



Adult, male (PI; xxi. Fig. 3). — Color black and dark brown. 



Head : labium dark brown ; labrum, clypeus, front, vertex and 

 occiput nearly black (clypeus and front brown in tenerals) ; front 

 rugose, the vertex projecting over the median ocellus in a single 

 truncated lobe (sometimes feebly concave at tip) ; postgenae with 

 two very faint yellow spots on each side behind the lateral margins 

 of the compound eyes. 



Thorax: prothorax uniform dark brown, the caudal margin 

 entire and with a few dark hairs ; meso- and metathorax also 

 uniform brown, the dorsum somewhat darker than the sides ; and 

 an obscure dark line from the base of the hind wings to the kat- 

 episterna of the mesothorax ; thoracic venter dark brown ; legs 

 black, coxae and trochanters lighter ; femora with a single dorsal 

 carina each ; the tarsal claws with the ventral tooth placed well 

 beyond the middle, the claw widened considerably proximad of 

 the tooth ; entire base of the wings brown, the dark area fre- 

 quently extending to the nodus in the hind wing, usually three- 

 fourths the distance to nodus in the front wing ; beyond the brown 

 area of the wing there is frequently a white semitransparent area, 

 especially in older specimens ; wing-veins black. The thorax does 

 not usually become pollinose in older individuals but grows steadily 

 darker, becoming almost black. Tenerals have a light mid-dorsal 

 stripe which continues onto the meso- and metanotum. 



Abdomen: black and brown, in older individuals bluish pol- 

 linose, especially towards the tip; terga with a broad stripe on 



^ = basalis Say. 



