176 NEUROPTERA. 
A cosmopolitan genus of about twenty-five species. Brauer® gives a key to the 
species then known. ‘Those of the present fauna may be distinguished as follows :— 
A. Frons with no dark markings ; superior appendages of the male widest at 
one-third their length, not bifid in profile view, their terminal spine very 
minute. Abdomen (excl. apps.), ¢ 44-52, ? 47-54; hind wing, g 47-53, 
9 49-56mm. ....... - . . . « IL. longipes. 
AA. Frons with dark markings superiorly. 
B. Superior frontal marking a triangular black spot, no dark ring; superior 
appendages of the male very slender at the base, somewhat roundly 
widened at the middle of the inner margin, at the apex slender, excised, 
and produced into a long tongue-like point (from Brauer’s description). 
Abdomen (excl. apps.), ¢ 52, ? 48-52; hind wing, 6 51, 2? 52mm. . 2. amazili. 
BB. Superior frontal markings a circular black spot, surrounding which, at 
a little distance, is a dark ring. 
C. Size smaller (abdomen, excl. apps., ¢ 47-50, 9 46-50; hind wing, 
fg 46-56, ? 48-56 mm.), pterostigma longer (6-7 mm.); supple- 
mentary longitudinal carina present on segments 4-10; superior 
appendages of the male widest at three-fourths of their length, not 
bifid in profile view, their terminal spine strong, well-developed . . 3. junius. 
CC. Size larger (abdomen, excl. apps., ¢ 72-84, 9 62-68; hind wing, 
& 56-62, 2 56 mm.), pterostigma shorter (5-5°5 mm.) ; supplemen- 
tary longitudinal carina present on segments 6 (?) or 7 (d)-10; 
superior appendages of the male widest at the apex, which is bifid in 
profile view. 2. 6 6 ee ee ee ee ee ee wee A walsinghami. 
_ Most of the present material in this genus from Mexico and Central America has 
already been reported on by Hagen (‘ Psyche,’ 1890, vide infra). 
1. Anax longipes, (Tab. VIII. fig. 10.) 
Anax longipes, Hagen, Syn. Neur. N. Am. p. 118 (1861)*; Psyche, v. p. 303 (1890) * [with biblio- 
graphy to date]; Davis, Journ. N. Y. Ent. Soc. vi. p. 197 (1898) *. 
Third femur 12(Amula ¢)-15 (Fla. ¢), third tibia 10 (Amula ¢)-12 (Fla. ¢) mm. Membranule grey 
- throughout, barely paler at base, in the Florida male. 
Hab. Untrep States, Massachusetts ?, New York, New Jersey °, Maryland ?, Georgia !, 
Florida? (A. W. §.: 1 ¢)*.—Mexico, Jalapa? (fF. D. G.: 1 3), Amula in Guerrero 
6000 feet (H. H. Smith: 1 ¢).—Brazit, Matto Grosso ?, Rio Negro?; Wusr Inpigs, 
Hayti *. 
* A, longipes in life has a bright green thorax and a bright red abdomen. No other Odonate of equal size 
is similarly coloured. It is therefore unlikely that any mistake in identification has been made in the reports 
of its having been seen, although not taken, near Cincinnati, Ohio (Dury, Journ. Cincin. Soc. Nat. Hist. xix. 
p. 169, 1900), at Lucaston, New Jersey, by Mr. Daecke (Ent. News, xiv. p. 35, 1903), and near Poyntelle, 
Pa., at 2000 feet elevation, by myself (Ent. News, xv. p. 317, 1904). . 
