CANNACRIA. 325 
cubitals, pterostigma luteous; males with the anterior lamina not more 
prominent than the hamule, its apical fifth bilobed, tips of the superior 
appendages gradually tapering. Abdomen, ¢ 24-29, ? 245-32; hind wing, 
Go 28-35°5, 9 830-389 mm. ... . woe ee ew ew ww ee OL fureata. 
Black on abdominal dorsum forming a median band from the apex of segment 3 to 9, 
ground-colour of abdomen in younger individuals reddish- or yellowish-brown ; 
face and labrum luteous, the latter sometimes edged with black; wings, with 
one or two (more often one) rows of cells between the subnodal sector and the 
supplementary sector next below, when coloured elsewhere than at the base 
having the colour (yellow or brownish-yellow) deepest between base and nodus, 
front wings with 10-12 (11 in 633 °¢/,), hind wings with 6-7 (7 in 723 °/o) 
antecubitals, pterostigma luteous; males with the anterior lamina more 
prominent than hamule or genital lobe, its apical half bilobed, tips of superior 
appendages less tapering than in furcata, less convex than in gravida. 
Abdomen, ¢ 32-88, ¢ 82-34; hind wing, ¢ 35-36, 9 845-387 mm. . . . 2. batesit. 
[Front wings with three rows of post-triangular cells increasing to four rows proximal 
to the level of the nodus, two rows of cells between short sector and supple- 
mentary sector next below; all wings with two rows between subnodal sector 
and supplementary sector next below; coloration of abdomen and anterior 
lamina of male as above stated for batesii, face with at least some black markings, 
labrum black; wings, when coloured elsewhere than at base, with the colour 
(yellow to reddish-brown) forming a cloud distal to the nodus and extending 
toward, but not to, the golden-yellow stigma; front wings with 10-13 (11 in 
381°/,), hind wings with 7-8 (7 in 724°/,) antecubitals; tips of the superior 
appendages of the male more convex than in furcata or in batesii. Old individuals 
of both sexes have thorax and base of abdomen pruinose ; remainder of abdomen 
obscure, blackish. Abdomen, ¢ 32-37, ¢ 33-40; hind wing, gf 35°5-39°5, 
9 35-42 mm. 2. we ee ee ee ee gravida] 
1. Cannacria furcata. 
Erythemis furcata, Hagen, Syn. Neur. N. Am. p. 169 (1861)"; Karsch, Berl. ent. Zeitschr. xxxiil. 
pp. 348, 361 (1890) *. 
_ Cannacria furcata, Calvert, Proc. Calif. Acad. Sci. (2) iv. pp. 547, 548, t. 17. figg. 110-113 
(details ¢ ¢) (1895) °; (3) Zool. i. p. 409 (1899) *. 
Cannacria smithii, Kirby, Ann. & Mag. Nat. Hist. (6) xiv. p. 266 (1894)°; Carpenter, Journ. 
Inst. Jam. ii. p. 260 (1896) °. 
The “more or less distinct dark band above ”* on the abdomen of some specimens of smithii is, I believe, 
an appearance caused by the contents of the intestine shining through ; I have observed this deceptive 
condition in some of the material before me. 
I have not been able to detect any geographical variations. Ranges of size are shown by the following figures 
in millimetres :— 
Altamira. Venezuela. Rio Janeiro. 
Abdomen, 5 ....2....-+44-. 28-29 25-26 265-29 
” Deve e wees 27-32 245-26 26°5-—29 
Hind wing, cd .... 6... ee eee 34-35°5 28-83°5 33°5-34 
nn 33°5-87°5 30-34 33-36°5 
BIOL. CENTR.-AMER., Neuropt., Mebruary 1907. wa 
