BS 
Qo 
rN 
NEUROPTERA. 
lobe; its outer branch longer than the inner; rolled inward 
(mesad) at its extremity, touching its fellow of the opposite 
side and forming a covering below (ventral to) the shorter, 
hook-like, inner branch, extreme apices of both branches spzne- 
like and directed forward. Abdominal segment 2 14-1°8 (3 )s 
1:3-2 (2) times as wide as base of segment 4, segment 4, 
2:5-4 (g), 2°5-3°5 (9) times as long as wide. Abdomen, 
So 31-35, 2 34-37; hind wing, ¢ 36°5-38, ¢ 37-40 mm.. . 4. cultriformis *. 
[DD. Dorsum of abdominal segments 4-7 black with three narrow 
yellow lines, one on the mid-dorsal carina and one on each of the 
lateral margins respectively ; abdominal segment 2 twice as wide 
as base of 4, 4 4 (gd), 34 (9%) times as long as wide; genital 
hamule ¢ similar to that of ferruginea. Abdomen, 3 31°5—386, 
9? 81-84; hind wing, g 34-87, 9 84-86mm. . ..-+ - - attenuata t. 
The colour-patterns of the sides of the thorax described above are those of younger 
individuals and are soon altered with age, especially with the acquirement of 
pruinosity. While they justify the separation of certain species, they are, from the 
cause mentioned, often of little use in aiding identification of old examples. 
1. Orthemis ferruginea. (Tab. IX. fig. 34.) 
Libellula ferruginea, Fabr. Syst. Ent. p. 423 (1775) ’. 
Orthemis ferruginea, Kirby, Trans. Zool. Soc. Lond. xii. p. 286, t. 47. figg. 3 (venation), 3a, b,c 
(leg, apps. ¢) (1889)*; Ann. & Mag. Nat. Hist. (6) xiv. p. 264 (1894) °; (6) xix. p. 604 
(1897) ‘; (7) iii. p. 8364 (1899) °; Hart, Ann. Rep. Roy. Bot. Gard. Trinidad, 1891, p. 9 
(1892)°; Calvert, Proc. Calif. Acad. Sci. (2) iv. p. 520, t. xvi. figg. 67-69 (genit. f) (1895) °; 
(3) Zool. i. p. 889 (1899) *; Prinzessin Therese, Berl. ent. Zeitschr. xlv. p. 260 (1900) °; 
Needham, Proc. U.S. N. M. xxvi. t. 48. fig. 1 (venation) (1903); xxvil. p. 702, fig. 3 
(labium of nymph) (1904) *; Ris, Hamburg. Magalh. Sammelr., Odon. p. 42 (1904) * ; 
Williamson, Ent. News, xvi. p. 804 (1905) *. 
Libellula discolor, Burm. Handb. Ent. ii. p. 856 (1839)"*; Selys, in Sagra’s Hist. Cuba, Ins. 
p. 447 (1857) **; Hagen, Proc. Bost. Soc. Nat. Hist. xviii. pp. 78, 85 (1875) ». Calvert, 
Trans. Amer. Ent. Soc. xxv. p. 79 (1898) **. 
Orthemis discolor, Hagen, Syn. Neur. N. Amer. p. 160 (1861); Proc. Bost. Soc. Nat. Hist. xi. 
p. 292 (1867) *; Steté. ent. Zeit. xxix. p. 279 (1868) “; xxx. p. 263 (1869); Uhler, Proc. 
Bost. Soc. Nat. Hist. xi. p. 297 (1868) **; Kolbe, Archiv f. Naturg. liv. i. p. 168 (1888) *; 
Karsch, Ent. Nachr. xv. p. 236 (1889) *. | 
Libellula macrostigma, Rambur, Névr. p. 57 (1842) ™ 
* ‘See footnote f, p. 233. 
+ Libellula (Orthemis) attenuata, Erichson, Schomburgk’s Reisen in Brit. Guiana, iii. p. 583 (1848), i is 
included here mainly for comparison. It is known from Colombia, Guiana, Brazil, and Jamaica, and may 
therefore occur in Central America. 
