134 



THOMAS SAY FOUNDATION 



angles acute, hind angles 

 somewhat rounded ; surface 

 quite rugose. Legs brown- 

 ish ; first and second tarsal 

 segments very short, sub- 

 equal ; third segment much 

 longer than one and two com- 

 bined. Wings lightly to heav- 

 ily infuscated; a number of 

 costal crossveins before the 

 end of the cord and from one 

 to four beyond ; subcosta 

 does not reach to the cord; 

 anal area of hind wings 

 large ; second anal vein of 

 hind wing bent towards the 

 third vein and usually con- 

 nected to the third vein by a 

 crossvein. Tails long and 

 slender. 



Male. Hind margin of 

 seventh abdominal tergite 

 with a raised rearward point- 

 ing process ; tenth tergite 

 with two incurved, bluntly 

 pointed processes which orig- 

 inate at the base of the cerci and almost meet at the tips 

 and just before the tips these processes bear a slender, 

 finger-like process which is directed forward obliquely 

 over the abdomen ; subanal lobes and supra-anal process 

 unmodified. 



Female. Eighth abdominal sternite unmodified or 

 slightly produced into a subgenital plate. 



Distribution. — North America, Asia and Africa. 



Neoperla clymene Newman. 



(Plate 24, figs. 1-5, and text fig. 5.) 



1839. Chloroperla clymene Newman, Am. .Mag. Nat. Hist., 3:87. 



1842. Perla clymene Pictet, Ins. Neurop., p. 283. 



1852. Perla clymene Walker, Cat. Neurop., p. 167. 



1861. Perla clymene Hagen, Svn. Neurop., N. A., p. 29. 



1863. Perla clymene Hagen, Stett. Ent. Zeit., 28:217. 



1892. Perla clymene Banks, Cat., p. 342. 



1907. Neoperla clymene Banks, Cat., p. 12. 



1909. Neoperla clymene Klapalek, Wien. Ent. Zeit., 28:217. 



1909. Neoperla clymene Enderlein, Zool. Anz., 34:390. 



1842. Perla occipitalis Pictet, Ins. Neur., p. 254. 



Fig. 18. Neoperla clymene Newm. 



