518 PROCEEDINGS OF THE XATlOyAL MIHEUM. vui.. 41. 



deep, pale reddish; scutum grayish bro^vn, trivittate; scutellum, 

 gray, broadly two-striped; post-notum dark. Pleurae uniformly 

 light brown without conspicuous stripes. Halteres pale, knob brown. 

 Legs: brownish yellow, a narrow dark subapical ring on (he femora. 



Wings: cells C and Sc rather dark brown, with a few small incon- 

 spicuous dots; caudal cells pale, subhyaline. The picture of the 

 wing is that of a dark costal area and the remamder of the wing pale. 

 (See fig. 24.) 



Abdomen: yellowish brown, a median tergal stripe, broadest on 

 the first segment; lateral margin of the tergites darker. 



Female. — Length, 5.7 mm; wing, 4.3 mm. Larger, the caudal 

 cells of tlie wing darker, numerously dotted and sprinkled with paler. 



Habitat. — Holotype. — Male, Aguna, Guatemala, C. Am. (G. Eisen, 

 coll.). Allotype. — Female, Cayamas, Cuba. March 18 (E. A. 

 Schwarz); (in house). 



Type. — ^In U. S. National Museum collection (Xo. 1492.^). 



ERIOPTERA (MESOCYPHONA) CALOPTERA Say; FEMORANIGRA, new subspecies. 



Like caloptera S&y in its variegated vertex, yellowish mesonotum, 

 wing pattern, etc., but much darker in coloration, especially in the 

 posterior femora. 



Prsescutal pits separated by a distance not greater than the diame- 

 ter of one; located on the proximal edge of the dorsal thoracic stripes, 

 these stripes as vnde as, or wider than, the pale dorsal median stripe; 

 hind femora largely black, the 3-cllow being confined to the extreme 

 tip, the base, and a narrow post medial ring. 



This subspecies is closely allied to the more northern caloptera in 

 its coloration and structure; the indistinct brown pleural stripes, the 

 shape and position of the praescutal stripes, the wing pattern, etc. 

 A notable and apparently constant dilTercnce, however, is in the 

 posterior femora wivich arc mostly black in the tropical form, the 

 antepenultimate (yellow) ring being narrower than the penulimate 

 (black) ruig, and other clearty defined difTcrcnccs. In some speci- 

 mens the last black rmg is contmued to the tip of the femur, obliter- 

 ating the yellow apex of the segment. This is apparently merely a 

 daik southern form of the species. 



Habitat. — //oZoij/pc— Female, Juan Vmas, Costa Rica, May 2, 1910; 

 (P. P. Calvert) (in liousc). Paratopes. —Three females, with the, 

 tj-pe. 



Tj/pe. — Li Philadelphia Academy of Xatural Sciences. 



ERIOPTERA (MESOCYPHONA) IMMACULATA. new species. 



Vertex brown anteriorly, more yellow behind; mesonotum grayish- 

 yellow, stripes broad; pleural stripes distinct; femora with a uarrow I 

 sub-apical band; wings unspotted 



