6 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
synonymizing furcatum with L. pallidum Guerin may ultimately 
prove correct, I feel that his reasons of pale color and locality make 
this synonymy too tenuous to accept at this time. 
Leptonema stigmosum Ulmer 
FIGURES 2n-q 
Leptonema stigmosum Ulmer, 1905a, p. 60; 1907b, p. 163; 1907c, pp. 57, 58; 
1913, pp. 394, 407.—Campos, 1922, p. 74.—Mosely, 1933, p. 140.—Fischer, 
1947, pp. 313, 315.—Tomaszewski, 1961, p. 3.—Fischer, 1963, p. 173.— 
Schmid, 1964, pp. 317, 318. 
Lectotype, male: ‘“Balzapamba (Ecuad.) R. Haensch S,” “Type,” 
“St. Z. 1905 p. 61. N. 41,” “Inst. Zool. P.A.N. Warszawa Syntypus Nr. 
1736,” “Leptonema stigmosum Ulmer Typus!”’ ‘Lectotype Lepto- 
nema stigmosum Ulmer By Flint.” In Warsaw. 
Mosely’s illustrations (1933) do not agree very closely with the 
lectotype. The tenth tergum of the lectotype is not as extended, 
especially the dorsal lobe, and the apical processes of the aedeagus 
are different, although of the same general plan. It is not known 
whether these differences are specific, because considerable variation 
has been found whenever specimens from different localities identified 
as stigmosum have been looked at critically. 
The figures of the genitalia were made from the lectotype. 
Centromacronema excisum (Ulmer) 
PLATE 15 
Macronema excisum Ulmer, 1905a, pp. 85, 86.—Tomaszewski, 1961, p. 4. 
Centromacronema excisum (Ulmer).—Ulmer, 1905b, p. 87; 1907b, p. 116; 1907c, 
p- 117; 1913, p. 408.—Fischer, 1968, p. 204. 
The holotype female is from Santa Inez, Ecuador, ‘‘R. Haensch 8.” 
The photograph of the wings was made from the type which is in the 
collection in Warsaw. 
Macronema argentilineatum Ulmer 
Figures 3g-7; PLATE 1p 
Macronema argentilineatum Ulmer, 1905a, pp. 77, 78; 1907b, p. 164; 1907c, pp. 68, 
69; 1913, p. 408.—Banks 1924, p. 453.—Tomaszewski, 1961, p. 4.—Fischer, 
1963, p. 177. 
The photograph of the wings and the drawings of the genitalia were 
prepared from the holotype male from Warsaw. ‘The mesal rodlike 
process of the eighth sternum has not been found in any other Neo- 
tropical species of the genus. 
Macronema bicolor Ulmer | 
Ficures 3 d-f; PLatEe Ic | 
Macronema bicolor Ulmer, 1905a, pp. 75, 76; 1907b, p. 164; 1907c, pp. 71, 72; | 
1913, pp. 395, 408.—Tomaszewski, 1961, p. 4.—Fischer, 1963, p. 178. 
Lectotype, male: “S. Catarina Liiderwaldt,” ‘Type,” “St. Z. 
