286 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [BuU. 



wings with a large semiopaque spot covering the base and anal 

 angles, the spot enclosing a clear yellow area ; there is also a spot 

 between nodus and stigma and one across band just beyond 

 stigma; antenodal and postnodal cross-veins are infuscated; 

 stigma reddish ; legs mostly black, the coxae, trochanters, and 

 venter of the front femora brown ; claws with ventral tooth, less 

 than one-half the length of the claw beyond. 



Abdomen : black and yellow or more frequently red ; terga i 

 and 2 black above, red on sides ; 3 entirely red, with small, black 

 dorsal, somewhat shield-shaped spot, the caudal margin also black 

 on each side of the meson ; dorsum of 4 red, with black dorsal 

 spot on cephalic margin and two spots contiguous with the caudal 

 margin ; tergum 5 with caudo-lateral angles of dorsum black, 

 remainder red ; 6 and 7 with a dorsal triangle of red, the remainder 

 black; terga 8, 9 and 10 black; superior anal appendages brown, 

 inferior black. 



Female. — Similar to the male, but the reddish color everywhere 

 replaced by yellow ; wings with dark spot at tips considerably 

 reduced, forming a crossband in the hind wings ; abdomen with 

 yellow dorsal triangles on terga 3-7, the sides of 1-4 yellow, a 

 smaller dorsal spot on dorsum of two; venter of terga 1-8 pale, 

 becoming black ; superior anal appendages yellow above, black 

 below and at tips. 



Measurements: total length, male 31-34, female 30 mm. ; length 

 of abdomen, male 18-22, female 19-20 mm. ; length of hind wing, 

 male 27-28, female 27 mm. ; width of hind wing, male 10, female 

 10 mm. 



A daintily marked species of frequent occurrence in Connecticut. 



Connecticut. — New Haven, 27 June, 1905 (W. E. B.) ; Yalesville, 4 

 July, 1907 (B. H. W.) ; Hamden, 18 July, 1920; Easton, 6 July, 1922 

 (P. G.) ; Greenwich, 30 June, 1924 (J. L. R.) ; Putnam (Pierce). 



New England. — May 19-August 23. 



Celithemis monomelaena Williamson 



Ohio Naturalist, 10: 155: 1910. 



N)miph. — Unknown. 



Adult, male. — Color black. 



Head : labium pale ; front bluish metallic. 



Thorax : obscurely brown, the wings clear, not flavescent, and 

 marked with a black band extending to the nodus and a spot behind 

 this ; a spot between nodus and stigma usually divided, but some- 

 times fused ; and the tips of the wings also dark. 



Abdomen : black. 



Female. — Marked with yellow ; most of the face pale, a spot 

 on the vertex and a pale stripe on the thorax also pale ; small pale 

 triangular spots on abdominal segments 2 to 7 and lateral stripes 

 on segments 3 to 5 inclusive, the triangles of the dorsum, however, 

 not as long as the segments. 



