[22l] THE ODONATA 



Eight males and one female, Kadiak, July 20; one female (L. J. 

 Cole, collector) , Kadiak, July 4 ; one male and two females, Kukak 

 Bay, June 2g-July 5. 



Length, $ 47 mm.-49 mm., 9 4950; abdomen with appendages, 

 $ 34-36.8, 9 35-36.4; hind wing, $ 29.4-31.6, 9 31-32.2; ptero- 

 stigma, 9 2.5-3.5; appendages, $ 3, 9 3.4. The wings in the 

 males are almost clear hyaline ; in the females they vary from a clear 

 hyaline to a distinct subfumose. Triangles on anterior wings free or 

 crossed by one nervule ; on posterior wings, free (crossed by one ner- 

 vule in one male and one female) ; sometimes crossed on right wing, 

 free on left and vice versa. The luteous lateral thoracic spots are 

 sometimes very small or entirely absent. 



This species was described from Labrador by Burmeister, while 

 Scudder's eremita was from Hermit Lake, in the White Mountains of 

 New Hampshire. Kirby, in his synonymic catalogue, gives it also 

 as occurring in Alaska. 



Subfamily LIBELLULIN-ffi. 

 LEPTETRUM QUADRIMACULATUM (Linn.) 



Libellula quadrimaculata LINN., Syst. Nat., I, p. 543, 1758. CALVERT, 

 Trans. Am. Ent. Soc., xx, p. 258, 1893. KELLICOTT, Bull. Ohio State 

 Univ. (4), No. 5, p. 100, March, 1899. WILLIAMSON, 24th Ann. Rep. 

 Dept. Geol. and Natural Resources, Ind., 1899, p. 331, 1900. 



Leptetrum quadrimaculatum KIRBY, Synonymic Cat., p. 27, 1890. 



Two males from Fox Point, July 26-28. This species is found 

 throughout the Northern Hemisphere. 



The wings in these two specimens are not clear hyaline, where 

 unmarked, but have a subfumose tinge. 



LEUCORHINIA HUDSONICA (Selys). 



Libellula hudsonica SELYS, Revue des Odonates ou Libellules d' Europe, Mem. 



Soc. Roy. Sci. Liege, vi, p. 53, 1850. 



Diplax hudsonica HAGEN, Syn. Neur. N. Am., p. 180, 1861. 

 Leucorhinia hudsonica HAGEN, Proc. Bost. Soc. Nat. Hist., XVIII, p. 78, 



1875. KIRBY, Synonymic Cat., p. 12, 1890. HAGEN, Trans. Am. Ent. 



Soc., xvn, p. 233, PL x, figs. 13 and 18 a & b, 1890. 

 Leucorhinia hageni CALVERT, Trans. Am. Ent. Soc., xvn, p. 36, PL v, figs. 



2-4, 1890. 



Kukak Bay, June 2g-July 5, two males ; Virgin Bay, Prince Wil- 

 liam Sound, June 25-26, six males and five females. 



These specimens agree very well with Calvert's description (Z. 

 hagent) . The color of thoracic dorsum and sides varies in both sexes 

 from yellow to reddish-brown, this variation being, probably, partly 



