MACROTHEMIS. 289 
AA. Abdomen luteous or pale brown, sutures and carinz black, not wider on seg- 
ments 7 and 8 ; pale green antehumeral stripe of the form of an inverted L 
turned toward its fellow of the opposite side; a small, pale, inferior spot 
on each of the mes- and metepimera; hind wings with two post-triangular 
rows, often preceded by a single cell reaching from short sector to first 
sector of the triangle, 3 (¢) or 4 (2) rows of cells between and parallel 
to A, and the anal “ angle,” and at least 2 (3 2) postcostal cells between 
the proximal angle of the triangle and the point of origin of A, ; apices 
of the superior appendages of the males not acute but rounded. Abdomen, 
¢ 80°5-35, 2 30-82°5; hind wing, ¢ 31°5-33, 9 32-86mm. . . . . 4. inacuta. 
1. Macrothemis musiva. (Tab. IX. figg. 43-45.) 
Macrothemis musiva, Calvert, Proc. Bost. Soc. Nat. Hist. xxviil. pp. 318, 326, t. 2. fig. 31 (pattern 
of side of thorax) (1898) '. 
g (hitherto undescribed). Differs from the description’ of the female in having the dark metallic-violet of 
the superior surface of the frons extending also on the anterior surface downward almost to the inferior 
margin; antehumeral stripe as in the type females or T-shaped (the Teapa males give all transitions, 
even asymmetrically), as indicated on page 288, anted, brown point on the metepimeron absent in two 
of the Teapa specimens; teeth of the second femora small and more than 25 in number, directed 
toward the knee, those of the third femora larger, 14-22 (Teapa examples) directed toward the 
trochanter ; abdomen 13 mm. wide at segment 2, ‘5 mm. wide at the middle of 3, thence gradually 
widening to 9 (1 mm.), longitudinal yellow stripes on 4~7 interrupted for shorter intervals, except in the 
(older ?) Colombian males, no other yellow markings above the lateral carinze on 5-9 ; superior appendages 
1-5 mm. in length, longer than segment 9, not so long as 9 and 10, curved downward in the proximal half, 
curved more strongly upward in the apical half, apex moderately acute, inferiorly at three-fifths-length 
is a tooth whose proximal slope bears about five very small denticles; viewed from above the superior 
appendages are thickest at two-thirds-length ; inferior appendage rather slender, its apex one-fourth to 
one-fifth as wide as its base, reaching to very slightly beyond the inferior tooth of the superiors. 
Genitalia of segment 2: anterior lamina hairy, very slightly bilobed at tip; hamule more prominent 
than the other parts, very slender, tapering gradually to an extremely acute apex ; genital lobe least 
prominent, hairy, about as long dorso-ventrally as wide antero-posteriorly. Wings colourless or very 
faintly yellow, some minute traces of brown at the bases of the great veins. 
©. The examples from Sapucay exhibit additional variations in wing-colouring. One has the wings 
~ ancoloured, except for deep yellow at the bases out to the third antecubital for the whole width on the 
front pair, back to slightly beyond the membranule on the hind pair. A second has the wings smoky 
throughout, deep yellow at the bases out to distal angle of the discoidal triangle (front), or one cell 
beyond (hind), for the whole width of the wings. The third has the wings smoky throughout, except 
between base and triangle for the whole width of the hind pair ; pale yellow, ill-defined, at the bases of 
both pairs reaches out to about the second antecubital, for almost the whole width on the front pair, on 
the hind pair back to the apex of the membranule. 
Some additional particulars concerning this species are given on page 288. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith: 3 ¢).—Cotomsia, Bonda [1 ¢] 
and Onaca [1 3] in Dept. Magdalena; Braziu', Canta Gallo 1, Chapada [2 ¢ ], Rio 
Janeiro [1 o] (A. Z. Smith, Carn. Mus. Pittsb.); Paracuay, Sapucay (Foster, 
U.S. N. M.: 3 2). 
- Taken in January (Teapa, Sapucay), February (Teapa), and December (Bonda, Onaca). 
M. musiva differs from pumila, Karsch, described from Bahia, Brazil, by its larger 
size, two post-triangular rows in the hind wings of the female, &c. 
