6 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Female. — Face bearing two small setae, antennal segment 3 (fig. 

 16) blunt; femora without distinct setae along ventral surfaces. 



Type-data. — Holotype cf and allotype 9 from Dominica: Clarke 

 Hall, Feb. 11-20, 1965, W. W. Wirth (USNM 69430). Paratypes: 

 Clarke Hall (including specimens from Manets Guter, coconut grove, 

 cocoa trail, and specimens from light and malaise traps) Jan. 8-Mar. 

 20, 18 cf, 23 9; Macoucheri River, Jan. 14, 12 d" ; Macoucheri River, 

 seashore and river mouth, Mar. 15, 5 a"; Cabrits Swamp, Feb. 2-3, 

 Mar. 22-25, 29; Fond Figues, Feb. 9, Mar. 9-12, 4 d", 1 9; Hodges 

 River mouth, Feb. 27, 1 cf , 2 9; Woodford Hill, Feb. 27, swamp forest, 

 1 cf; all from Dominica, 1965, W. W. Wirth. Additional paratypes: 

 Clarke Hall, Jan. 22-29, 21 d", 42 9; same locality, Feb. 28, 2 J 1 ; 

 Deux Branches, Pagua River, Feb. 3, 3 cf , 3 9; near Belfast, Jan. 31, 

 1 o" ; all from Dominica, 1964, H. Robinson. 



Note. — H. simplex is the only species of Harmstonia in which I 

 have observed distinct sexual dimorphism of the third antennal 

 segment. 



Harmstonia obscura, new species 



Figure 4 



Male. — Length 1.00 mm; wing 1.17 mm by 0.42 mm. Front 

 brown; antennal segment 3 short, rounded. Legs brown; middle 

 femur with a weak preapical ; fore- and hind tibiae without prominent 

 dorsals or apicals, middle tibia with a weak anterodorsal and a weak 

 posterodorsal near basal third; lengths of segments of foretarsus from 

 base as .11-.05-.04-.04-.05 mm; middle tarsus as .15-.06-.05-.04-.05 

 mm; hind tarsus as .13-.13-.08-.05-.06 mm. Tips of wing veins 2 and 

 3 are 1% times as far apart as tips of veins 3 and 4, veins 3 and 4 

 essentially straight and not becoming nearly parallel; crossvein 

 1 to 1 ){ times as long as last of vein 5 ; knob of halter yellow. Hypo- 

 pygium (fig. 4) ca. .25 mm long; hypopygial lamella blackish, broad 

 with two prominent distal projections, with a small hyaline area in 

 middle of base. 



Female. — Face bearing four, rarely three, small setae. 



Type-data. — Holotype cf and allotype 9 from Mexico: Chiapas, 

 near junction of Rts. 190 and 200, May 21, 1963, H. Robinson (USNM 

 69431). Paratypes: same data as holotype, 7 d" and 3 9; Guerrero, 

 Rio Papagayo near Tierra Colorado, May 29, 1963, H. Robinson, 1 9. 



Harmstonia pallida, new species 



Figure 5 



Male. — Length 1.00 mm; wing 1.25 mm by 0.49 mm. Front 

 yellowish gray; antennal segment 3 short, rounded. Tarsi from 



