534 NEW YORK STATE MUSEUM 



Libellula plumbea Uhler 



1857 Libellula plumbea Uhler, Acad. nat. sci. Phil. Proc. p. 87 

 1861 Libellula plumbea Hagen, Synopsis Neur. N. Am. p. 157 

 1893 Libellula plumbea Calvert, Am. ent. soc. Trans. 20 : 256 (description) 

 1895 Libellula plumbea Calvert, N. Y. ent. soc. Jour. 3 ; 47 (listed from 

 Westchester co.) 



This is another southern species which seems not hkely to be found 

 commonly in the state excepting possibly in the lower valley of the 

 Hudson river. Its nymph is unknown. 



Libellula cyanea Fabricius 



1775 Libellula cyanea Fabricius, Syst. ent. p. 424 

 1839 Libellula quadrupla Say, Acad. nat. sci. Phil. Jour. 8 : 23 

 1857 Libellula bistigma Uhler, Acad. nat. sci. Phil. Proc. p. 87 

 1861 Libellula quadrupla Hagen, Synopsis Neur. N. Am. p. 157 

 1893 Libellula cyanea Calvert, Am. ent. soc. Trans. 20 : 556 (description) 

 1895 Libellula cyanea Calvert, N. Y, ent. soc. Jour. 3:47 (listed from the 

 vicinity of New York) 



1899 Libellula cyanea Kellicott, Odon. Ohio, p. 97 (description) 



1900 Libellula cyanea Williamson, Dragon flies lud. p. 330. 



This species ranges from Massachusetts to Indiana and South Carolina ; 

 it is likely to be found eventually in numerous unreported locahties in 

 New York state. I have not seen it at large, but I have been allowed to 

 study a bred specimen kindly lent me by Samuel Henshaw, and from 

 that specimen, the following characters of the nymph are drawn. 



Nymph. Total length 20 mm; abdomen 13.5 mm; hind femur 5 mm; 

 width of head 5 mm, of abdomen 6.5 mm. 



The head is considerably narrowed behind the eyes, and the hind 

 angles are rough hairy; lateral setae six; mental setae eight or nine, 

 the six or seven external ones forming a stronger series; the movable 

 hook is stout, short and almost straight ; dorsal hooks on abdominal seg- 

 ments 4-8, straight and sharp ; lateral spines spinulose hairy externally, 

 those of the ninth segment shorter than the loth segment, 9th segment 

 a little more than twice as long as the loth ; appendages as long as the 

 last two segments, the lateral appendages half as long as the others. 



Libellula quadrimaculata Linnaeus 



1785 Libell ula quadrimaculata Linnaeus, Syst. nat. 1 : 543 

 1861 Libel 1 ul a quadrimaculata Hagen, Synopsis Neur. N. Am. p. 150 

 1867 Libellula quadrimaculata Packard, Am. nat. 1 : 310, pi. 9, fig. 2 

 1893 Libel 1 u 1 a quadrimaculata Calvert, Am. ent. soc. Trans. 20:258 

 1893-97 Libellula quadrimaculata Calvert, N. Y. ent. soc. Jour. 3 : 47 

 and 5 : 94 (listed from New York, Ithaca, Schoharie, Earner and Buffalo) 



1899 Libellula quadrimaculata Kellicott, Odon. Ohio, p. 100 (descrip- 



tion) 



1900 Libellula quadrimaculata Williamson, Dragon flies lud. p. 331 



(description) 



