524 NEW YORK STATE MUSEUM 



Nymph. (PI. 25, fig. 2) Of much the same form as that of S. 

 vie 1 n um, but a httle larger (at the time of writing this 1 have not my 

 specimens at hand for reference, and can not therefore give the exact 

 measurements; I have all the other details carefully recorded in note 

 and drawings, but the measurements have been accidentally omitted) ; 

 the eyes are laterally prominent, but well rounded ; lateral setae nine ; 

 mental setae about 12, of which the fifth (counting from the side) is 

 longest; the dorsal hooks on the fourth and fifth abdominal segments 

 are less than one third as large as those on the three following segments ; 

 the superior abdominal appendage is one fourth shorter and the laterals 

 are one half shorter than the inferiors ; the spines of the ninth segment 

 surpass the apices of the superior appendage, and are strongly incurved, 

 and spinulose serrate on their exterior margins. 



Sympetrum assimilatum Uhler 



Figure 30 

 1857 Libellula assimilata Uhler, Acad. nat. sci. Phil. Proc. p. 88 

 1893 Diplax rubicundula var. assimilata Calvert, Am. ent. soc. Trans. 



20 : 263 

 1899 Diplax rubicundula Kellicotfc, Odon. Ohio, p. 109 (description) 



This was very common at Saranac Inn in Little Clear creek. During 

 the latter part of July the nymph could be seen any clear morning 

 climbing up the Sparganium stems, and transformmg. The 

 nymphs were obtained whenever collecting was done from the beds 

 of standing vegetation along the creek. 



Sympetrum rubicundulum Say 



Figure 30 



1839 Libellula rubicundula Say, Acad. nat. sci. Phil. Jour. 8 : 26 

 1861 Diplax rubicundula Hagen, Synopsis Neur. N. Am. p. 176 

 1866 Diplax rubicundula Scudder, Bost. soc. nat. hist. Proc. 10:219 

 1893 Diplax rubicundula Calvert, Am. ent. soc. Trans. 20:262 (descrip- 

 tion) 



1899 Diplax rubicundula Kellicott, Odon. Ohio, p. 109 (description) 



1900 Diplax rubicundula Williamson, Dragon flies Ind. p. 322 (descrip- 



tion) 



Pale, teneral, yellowish specimens of this species begin fluttering up 

 out of the grasses that fill the shallow water in the upper reaches of 

 most ponds about the latter end of June. A month later, when they 

 have assumed their brillant black and red coloration, and have become 

 more numerous, we find them scattered everywhere. They seem most 

 numerous, however, about wet meadows, where they delight to go 

 foraging. 



