610 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



Head long, narrow; vertex converging to front, about a half longer 

 than broad, strongly carinate; frons about half as wide above as 

 below, with median carina distinct on apex of head, sides diverging 

 rather evenly to near apex; eyes narrow; antenna? short, slightly 

 more than half as long as frons, I scarcely half as long as II. Pro- 

 no turn long, roundly excavate behind. Legs short; hind tibiae not 

 longer than femora; calcar large, nearly as long as basal tarsus. 

 Elytra whitish, much longer than body. 



Redescribed from six brachyoptcrous females from Massachusetts, 



MEGAMELUS CONSTRICTUS, new species. 



Plate 48, figs. M, R. 



Size a little smaller than M. marginata, but proportions similar. 

 General color very light brown; frontal carinse margined with black; 

 pleurae and venter of abdomen more or less brown. 



Similar in most respects to marginatus and closely related to it, 

 differing as follows: Frons more than half as broad above as below, 

 sides roundly bulging midway instead of straight; antennae a little 

 more than half as long as frons. Legs more slender, shorter; hind 

 tibiae a little longer than femora; calcar small, scarcely more than 

 half as long as basal tarsus, very finely dentate on margin. Elytra 

 hyaline, scarcely white. Pygofers of male truncate, with a simple 

 excision ventrad, without fossae on each side of genital styles; latter 

 long, slender, sinuate, not concealed as in many species; anal tube 

 subdorsal, directed upward. 



Described from four males and three females, macropterous, from 

 Colorado (Baker). This species, though very similar to marginatus, 

 seems to be distinct, without doubt. 



Tijpe-specimen. —C&t. No. 15983, U.S.N.M. 



MEGAMELUS CONSTRICTUS MINUTUS, new variety. 



Distinctly and uniformly smaller than species, but proportions 

 similar; color as in marginatus, whitish, elytra whitish. Legs 

 smaller, more slender and delicate. Male genitalia similar. 



Described from ten macropterous males and females from Cali- 

 fornia (Baker). 



Type-specimen.— C&t. No. 15984, U.S.N.M. 



MEGAMELUS ALBOLINEOSUS Fowler. 

 Plate 48, fig. N. 

 Megamelus albolineosus Fowler ^81 : 135. — Van Duzee '07 : 47; '08 : 203. 



Length of body, 1.9 mm.; width of vertex, 0.12; width of frons, 

 0.19; antennae I, 0.08, II, 0.19. General color brown; pronotum 

 and scutellum between lateral carinae, vertex, clypeus, lateral portion 

 of pronotum, antennae, and legs light yellowish brown; the rest 



