No. 39] ODONATA OF CONNECTICUT: LIBELLULIDAE 27 1 



Female. — Similar in most points to the male except that the 

 color of the abdomen does not become reddish and most of the 

 other colors are retained longer ; caudal margin of eighth sternum 

 slightly excavated. 



Measurements : total length, male 38-45, female 38 mm. ; abdo- 

 men, male 25-27, female 24-26 mm. ; hind wing, male 27-30, 

 female 29-30 mm.; width hind wings, male 9, female lo-ii mm. 



This species is so different from all other members of this genus 

 that it would seem to belong elsewhere. 



A single female collected by Mr. Waldeti at Lighthouse Point, June 10, 

 1906. 



New England. — June lO-September 10. 



Sympetruxn costiferum (Hagen) 



Synopsis of the Neuroptera of North America, 174: 1861. 



Adult, male. — Brown or red. 



Head : front with two smoky spots ; occiput pale with black 

 spots behind the eyes. 



Thorax: brown, wings flavescent along the costal margin; 

 stigma yellow to brown, supported by one cross-vein; shoulders 

 of mes- and metepimera sometimes black. 



Abdomen: pale (brown or red) without dark triangles on the 

 sides of terga, sometimes with a black line above lateral carinae 

 and a trace on dorsal carina; inferior anal appendage with two 

 upturned teeth at apex ; superiors with four small teeth on ventral 

 margins. 



Female. — Venter of segment 8 does not project ventrad as in 

 vicinum to which the species is most closely related. 



Measurements : total length, male 32-36, female 35 inm. ; length 

 of abdomen, male 21-25, female 23-26 mm. ; length of hind wings, 

 male 25-26, female 25-28 mm. ; width of hind wings, male 8-10, 

 female 9-9.5 mm. 



Specimens in the collection of Dr. P. P. Calvert, from South 

 Dakota and Washington, are larger than Eastern examples. 



New England. — July 12-October 7. 



Sympetrum danae (Sulzer)^' 



Abgekurzte Geschichte, etc., 169 tab. 24, fig. 3: 1776. 



Adult, male. — Color black and yellow. 



Head : labium with a black spot on middle, pale on sides ; 

 labrum dark brown, clypeus yellow but showing a tendency to 

 become brown ; front yellow below and on sides, dark brown 

 above ; sometimes the entire face is brown ; rear of head black 

 with two yellow spots on each side behind the compound eyes. 



Thorax : dark brown to black with yellow ; mesepisterna with 



=. scoticum (Donovan). British Insects is: 523: 181 1. 



