CALVERT: MACROTHEMIS AND ITS ALLIES. 
323 
nlar rows to the level of the nodus, increasing to 3-4 (5—6 in 
Michelis’s £ ) marginal cells and the internal triangle of two cells 
(3 in left front wing of Michelis’s £). Hind wings with 8 anteno- 
dals (7-8 Michelis’s £), 6-8 postnodals, two posttriangular cells of 
which the upper reaches across the entire width of the held (three 
in one wing of one £), then one row for two to three cells, fol¬ 
lowed by two rows increasing to 8-10 marginal cells. 
Total length 40, abdomen 29.5, hind wing 28.5, its greatest width 
8, pterostigma 2, superior appendages 1.6, hind tibia 5.5. 
In addition to the four types quoted above, I have studied a male 
from Brazil, by Michelis, given me at the Museum fur Naturkunde, 
Berlin, in 1896. 
5. Macrothemis marmorata Hagen. PI. 2, hg. 33. Hagen, 
Stett. ent. zeit., vol. 29, p. 286, 1868. M. tenuis Karsch, Berl. 
ent. zeit., vol. 33, p. 364, 1890. 
Karsch’s detailed description of this as a new species was evi¬ 
dently (from- his text) made in forgetfulness of Hagen’s publi¬ 
cation. Hagen’s types of marmorata in the Museum of Comp. 
Zool., two males, one female, agree with Karsch’s text except in a 
few, mostly unimportant particulars, as follows ; $ a distinct tooth 
on the inferior surface of the superior appendages at little more 
than half their length from the base. $ and 9 internal triangle 
(subtriangular space) of two cells, 6-7 postnodals on f. w. 
Total length $ 39, 9 40. Abdomen $ '29, 9 29.5. Hind wing 
$ 28, 9 30. Width of hind wing $ 8, 9 9.5, pter. 2, sup. app. 
$ 1.6, hind tibia 5.5. App. 9 1. 
In the two male types there are on the front wings two posttri¬ 
angular rows for two to three cells, then one row for two to four 
cells followed by two rows which in one wing of one individual are 
again interrupted by a single cell; on the hind wings there are two 
posttriangular cells, the upper one reaching across the entire width 
of the field, then one row for three cells, followed by two rows 
increasing to 3 marginal cells. 
In the female type, the front wings have two posttriangular rows 
to beyond the level of the nodus with 4 marginal cells, the hind 
wings two posttriangular cells, the upper reaching across the entire 
width of the field, followed immediately (left side), or after one 
cell (right side), by two rows increasing to 9 marginal cells. 
Judging from the markings on the sides of the thorax, I am not 
certain that this type 9 may not really be tenuis 9 , especially as 
