130 NEUROPTERA OP NORTH AMERICA. 



cavated, the superior margin bounded by rufous; the front blue 

 above, margined with yellow, the base rufo-fuscous ; thorax villose, 

 rufo-fuscous, dorsum each side with an arcuated stripe, sides each 

 with two, green ones; feet black, femora partly rufous ; abdomen 

 long, sensibly narrowing posteriorly, rufo-fuscous, spotted with 

 green (the markings obsolete); appendages black, superior ones 

 short, narrow, before the apex dilated beneath, obliquely trunca- 

 ted; the inferior one a little shorter, narrow, triangular, obtuse; 

 those of the female very small; wings hyaline, the apex subfumose, 

 pterostigma narrow, yellow; membranule whitish ; nineteen ante- 

 cubitals ; nineteen postcubitals. 



Length 13 millim. Alar expanse 102 millim. Pterostigma 3| 

 millim. 



Hah. New Orleans (Schaum). 



23. 2B. basalis. 



JEschna basalis Selys' Collection. 



Sab. Canada. Unknown to me. 



24. Si. quadriguttata ! 



yEschna quadrifjutlata Burm. ! Handb. II, 837, 22. — Selys, Revue Odonat. 

 Eur. 398. yEschna vinosa Say, Jour. Acad. Philad. VIII, 13, 5. 



Fulvous; head fulvous, above with a fuscous stripe; thorax ful- 

 vous, the sides, each with two bright yellow spots, which are en- 

 circled with fuscous ; feet luteous; abdomen long, equal, much nar- 

 rowed behind the inflated base, fulvous, spotted with yellow 

 (markings obsolete), segments with a yellow medial fascia, which 

 is triangularly dilated ; the apex yellow, with a trifid fuscous spot ; 

 appendages fulvous, the superior ones long, foliaceous, obtuse, the 

 base narrower, and beneath with a small tooth ; the inferior ap- 

 pendage very short, triangular, broader, obtuse; wings hyaline, 

 with fulvous veins and a basal fulvous spot, the basal space reticu- 

 lated, pterostigma small, yellow; membranule small, white; 19 — 20 

 antecubitals ; nineteen postcubitals. 



Length GO — 65 millim. Alar expanse 85 millim, Pterostigma 

 3^ millim. 



Hab. Pennsylvania; Carolina; Massachusetts; Washington 

 (Osten Sacken) ; Maryland (Uhler). 



