332 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
margin. Abdomen narrower at 3 (.6 mm.), considerably widened in 
7 (2 mm.) and 8, narrowed again to the tip, 8 and 9 with a small 
pale green spot at base; spot on 7 larger than in the 9 . 
Sup. app. as long as 9 A. 10, blackish, curved downwards in the 
basal half, nearly straight in the apical half where they are but little 
thicker, apex moderately acute, the second fourth with an inferior 
row of 4-5 denticles of which the last is largest. Infer, appendage 
^ shorter, nearly twice as long as width at base, apex almost as wide 
as the base, bifid for about i the length of the appendage. 
Genitalia of 2 : anterior lamina with margin entire, hamule more 
prominent, apical half slender, hooked, genital lobe very small, barely 
as long as width at base. 
Wings clear, faintly yellow to beyond the nodus, front wings 
with the internal triangle of one cell on both wings of one male, of 
three cells on one wing of the other, two posttriangular rows to the 
level of the nodus ; hind wings with 7-8 postnodals, two posttriang¬ 
ular cells the upper of which reaches across the entire width of the 
field, then one row for two-three cells, followed by two increasing. 
Total length £ 85-34. 9 38-27. Abdomen £ 24.5-23.5. 9 
23-27. Hind wing £ 28. 9 27-31, its greatest width $ 9-8.5. 9 
8.5-9.5. Pterostigma 2. Sup. app. g 1.8. Apps. 9 A. Hind tibia 4.5. 
Distribution. The two type females from Bahia from Winthem’s 
collection: the other females from Colombia and Venezuela by 
Appun, Porto Cabello in the latter, Chiriqui (Staudinger) ; the two 
males from Porto Cabello. (M. C. Z.) A female from Rio Janeiro, 
George Peabody (Coll. P. P. C.). 
15. Macrothemis cydippe (Hagen MS.) sp. nov. ? PI. 2, fig. 28. 
Dytliemis c. Hagen, Syn. Neur. N. Amer., p. 317, 1861 (no 
description). 
Very similar to the above-described males of liemichlora is one 
at Cambridge labeled “ Rio, Olfers,” placed after the label “D. 
cydippe Hag.” It has the face and lips luteous, a pale spot on each 
side of 9 at base, and most of the dorsum of 10 greenish yellow. 
The only difference of any significance appears to be in the inferior 
appendage which is J shorter than the superiors, apex about ^ as 
wide as at base with a shallow median excision. The internal tri¬ 
angle on the right front wing is^of a single cell. The dimensions 
are the same as those of hemichlora $ . The constancy of the dif¬ 
ference in the inferior appendage in other specimens will determine 
the distinctness of cydippe. 
Printed , July , ISOS. 
