322 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
to the level of the submedian cross-vein and backwards (caudad) to 
the apex of the membranule, a still smaller yellow tinge at base of 
front wings. Reticulation dark brown. Membranule grayish. 
Pterostigma dark brown, surmounting one or two cells and parts of 
two others. Arculus at or beyond the second antenodal, its sectors 
stalked, nodal sector not waved, supplementary sector next below 
the subnodal separated from it by one row of cells, no hypertrig- 
onals, all triangles free; one submedian cross-vein, nearer the base 
than the first antenodal. 
F. W. 11-13 antenodals, the last not continuous (continuous in 
both wings of one 9 ), 6-8 postnodals, internal triangle of one cell, 
two posttriangular rows to beyond the level of the nodus, then 
three rows, with four marginal cells. First sector of the triangle 
correspondingly almost straight. 
H. W. 8-9 antenodals, 7-8 postnodals, no internal triangle, one 
row of posttriangular cells (between short sector and first sector of 
the triangle) to the level of the origin of the subnodal sector, 
sectors of the triangle united at their origins in 1J, separated at their 
origins in 1J individuals, inner side of triangle very slightly nearer 
base than the prolongation of the arculus would be. 
Total length 35. Abd. 25. F. W. 32. H. W. 31. Pter. 2.5. 
Hind tibia 5. 
Three females (Mus. Comp. Zool.)— (1) “-” “ Heyer,” 
(2) “ Brasil Heyer,” (3) “Brazil Mrs. Munroe,”— so identified by 
Dr. Hagen, although not labeled by him. 
4. Macrothemis tenuis Hagen. PI. 1, fig. 14. Hagen, Stet. 
ent. zeit., vol. 29, p. 286, 1868. (nec Karscli.) 
The Mus. Comp. Zool. contains four males by Beschke from New 
Freiburg near Rio, Brazil, types of Hagen. The color pattern of 
the sides of the thorax is rather diffuse and not easily described, but 
on the metepimeron interiorly is a black spot extending from the 
lower end of the second lateral suture halfway towards the thoraco¬ 
abdominal articulation. In marmorata males the same spot is 
represented by a stripe which reaches back to the hind margin of 
the metepimeron. The female type of marmorata has this color 
pattern of tenuis , hence I suspect it may be really the female of 
tenuis ; Dr. Hagen probably considered it as marmorata on account 
of the “ scliwarzblaue metallisehe Farbung nur oben auf der Stirn ” 
lacking in the males of tenuis , present in the males of marmorata. 
These four tenuis males have on the front wings two posttriang- 
