214 NEUROPTERA. 
Mus. p. 532 (nymph) (1901) *; Howard, Insect Book, t. 43. figg. 2 (3), 6 (2) * (1901) *; 
Brimley, Ent. News, xiv. p. 155 (1903) ”. 
Libellula odiosa, Hagen, Syn. Neur. N. Amer. p. 152 (1861) “; Proc. Bost. Soc. Nat. Hist. xvii. 
p. 70 (1875) **; Needham and Cockerell, Psyche, x. p. 139 (1903) *. 
Several other brief notices of this species exist, but they do not add to the geographical distribution. 
The couple from Durango have the brown on the wings reaching from base to nodus ; the male has two, the 
female but one, submedian cross-vein on the hind wings; abdomen, ¢ 32, Q 27:5; hind wing, ¢ 43, 
© 42 mm. 
These features just mentioned vary much even in the same locality in the United States, so that with 
considerable material before me I cannot distinguish geographical forms nor separate odiosa from 
luctuosa. 
Dimensions.—Abdomen, ¢ 27-32, 9 26-29; hind wing, ¢ 37-48, 9 37-42; costal edge of pterostigma, 
front wing, 4°5-5°5 mm. 
Hab. Cawapa, Ontario’?; Unirep Srarss, Saranac Inn in New York and Volga in 
South Dakota’ to !-!7 Greenville in South Carolina (Z. 0. Patterson, coll. P. P. C.: 
1 3), Tennessee 14, Texas 1619, and New Mexico 20 —-Mrxico, Las Bocas in Durango 
(Batty, A. M. N. H.: 1 ¢,1 2). 
The couple from Las Bocas were taken August 11, 1903; they were received after 
the key on pages 206-7 had been printed. 
This striking species has the basal third to half of the wings dark brown, paler 
proximally, the discoidal triangle of the hind wing cross-veined ; the abdomen stout, its 
fifth segment being nearly as wide as long, its eighth segment not perfoliate in the 
female ; pterostigma brown to black, membranule grey to black. 
Dury 22 has observed an individual of this species feeding on the supposedly 
distasteful Hippodamia. 
PSEUDOLEON. 
Pseudoleon, Kirby, Trans. Zool. Soc. Lond. xii. pp. 261, 262, 274 (1889) ; Cat. Odon. p. 10 (1890). 
There is but one known species, confined to the present region and Lower California. 
1. Pseudoleon superbus, 
Celithemis superba, Hagen, Syn. Neur. N. Amer. p. 148 (1861) °. 
Erythrodiplax superba, Hagen, Proc. Bost. Soc. Nat. Hist. xviii. p. 67 (1875) *. 
Pseudoleon superbus, Kirby, Trans. Zool. Soc. Lond. xii. p. 274, t. 53. fig. 7 (g in colours) (1889) ° ; 
Calvert, Proc. Calif. Acad. Sci. (2) iv. p. 518, t. 16. figg. 62-66 (details ¢ 9) (1895) *; 
(3) Zool. i. p. 889 (1899) *. 
g. The series from Gualan shows a graduated variation in the colouring of the apical half of the wings, the 
two extremes of which are: (a) clear area at the apex not reaching as far proximad as the stigma on the 
front margin nor the nodal sector on the hind margin; the margins of the wing at this clear area have 
small dark spots here and there; (6) clear area at the apex reaching to the stigma on the front margin, 
and on the hind margin to about the level of the proximal end of the stigma, 7. ¢. well proximad to the 
* Fig. 6 is incorrectly given on the explanation of this plate as Libellula axillena 2. 
