TRAMEA. 301 
II. Hind wings with dark basal colouring extending outward into the 
triangle at least, and, on the posterior side of Ay, to beyond the level 
of the triangle, its outer margin very much broken or indented; 2 or 
more rows of cells between A, and A; in at least part of their course. 
c. Basal colouring of hind wings bluish-brown ; superior appendages of 
3 5°5 mm. long, as long as segm. 8+49, inferior appendage ? as 
long as the superiors, genital hamule not projecting ventrad beyond 
genital lobe, vulvar lamina ? reaching to % or less of the length 
of the lateral margin of segm. 9. Abdomen, 3 35-37°5, 2 36-38 ; 
hind wing, ¢ 43-46, ¢ 46-48 mm. . . . «© 2. . 1 1. OSL lacerata. 
ec. Basal colouring of hind wings reddish-brown; superior appendages 
& 3°5 mm. long, shorter than segm. 8+9, inferior appendage half 
as long as superiors, genital hamule projecting ventrad at least as 
far beyond genital lobe as half the vertical height of the latter; 
vulvar lamina ¢ reaching to the posterior end of the lateral margin 
of segm. 9. Abdomen, ¢ 28°5-32, 9 32-34; hind wing, 3 38-42, 
9 89-43 mm. . . 1 6 ee ee ee ee ee we ee CG. onus, 
I had thought it likely that the greater or less projection of the genital hamule ¢ 
might be due entirely to greater or less protrusion of the penis, instead of being a 
specific character as Hagen !? employed it, but such observations as I have been able 
to make do not seem to support this idea. Thus, a male insularis from Hayti with 
penis protruded has the hamule no more or less projecting than in other insularis 
with penis not protruded. In males of 7. carolina with the penis protruding con- 
siderably, the hamules do not project so much as in individuals of onusta having the 
penis retracted. In the New World, as in the Old!°, the “species” of Tramea are 
separated by relatively slight differences. 
_ 1. Tramea cophysa? 
Tramea cophysa, Hagen, Stett. ent. Zeit. xxvii. p. 226 (1867) °. 
Libellula basalis, Burmeister, Handb. Ent. ii. p. 852 (1839)*; Calvert, Trans. Amer. Ent. Soc. xxv. 
pp- 70, 94 (1898) *. 
Tramea basalis et cophysa, Kirby, Cat. Odon. p. 3 (1890) *. 
Tramea basalis, Kirby, Ann. & Mag. Nat. Hist. (6) xix. p. 599 (1897) °; Carpenter, Journ. Inst. 
Jamaica, ii. p. 260 (1896) °. 
?? Libellula incerta, Rambur, Névr. p. 34 (1842) *. 
Tramea darwini, Kirby, Trans. Zool. Soc. Lond. xii. p. 315, t. 51. fig. 1 (entire 9) (1889) °; 
Currie, Proc. Wash. Acad. Sci. iii. p. 386 (1901) °. 
Hagen’s original description * of cophysa is headed “ Tramea cophysa Kollar,” and he further states “ 7’. cophysa 
stammt aus Brasilien und ist ein Manuscriptname des Wiener Museums.” The type of basalis, Burm.’, 
is in the same museum’, and Dr. Anton Handlirsch has kindly sent me the following information 
concerning both in a letter of 19. ix. 1904: “Die Type von Tramea basahs Burm. hat einige kleine 
gelbe Flecken auf den Pleuren. Die obere Seite der Stirn und der Scheitel haben schwach violetten 
Metallglanz. Der proximale Rand der Hinterfliigel ist etwas lichter braun als der grosse Fleck eher 
BIOL. CENTR.-AMER., Neuropt., December 1906. Ir 
