624 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 46. 



MEGAMELUS LAMINALIS Van Duzee. 



Plate 47, figs. R, T. 

 Liburnia laminalis Van Duzee ',97:251 ; '0,^:201. 



Length of body 2.8 mm.; width of vertex 0.20; width of frons 0.23; 

 antennae, I, 0.12, II, 0.25. General color soiled yellow to yellowish 

 white; frons transversely blotched with brown, clypeus brown; pro- 

 notiim and scutellum light brown laterad; mesopleurae brown; legs 

 light; elytra slightly brown; male pygofers whitish except laterally 

 brown. 



Vertex short ; frons almost twice as long as broad, broadest a little 

 above ocelli, slightly constricted between eyes; antennae reaching 

 beyond clypeus, I half as long as II. Legs moderately long; hind 

 tibiae longer than femora; calcar typical, marginal dentation scarcely 

 visible; brachypterous elytra reaching almost to tip of abdomen. 

 Male pygofers deeply notched above, produced on each side caudad; 

 genital styles large, spatulate, not plane, apex rather angulately 

 rounded; anal tube dorsal. 



Redescribed from 4 males and 12 females from Pennsylvania (Wirt- 

 ner) and Illinois. 



MEGAMELUS ERECTUS, new species. 



Plate 48, figs. D, E. 



Average length 2.1 mm.; width of vertex 0.16; width of frons 0.19; 

 antennas, I, 0.2, II, 0.23. General color light flavous to brown, 

 darker on abdomen (often almost black), scutellum and metastemum. 



Head short, not as broad as pro thorax, distinctly carinate at apex; 

 vertex small, narrow; frons over twice as long as broad, almost twice 

 as broad at apex as base, sides nearly straight; antennae reaching at 

 least to clypeus, I half as long as II. Pronotum rather short; scu- 

 tellum long; elytra typical, slightly browned; legs long; hind tibiae 

 considerably longer than femora, apical spines long; calcar moder- 

 ately long, large, margin finely dentate. 



Male pygofers broad, often erect, largely concealed in profile by pre- 

 anal segment, produced dorsally caudad on each side of anal tube; 

 styles long, divergent, enlarged and spatulate at tip, either square or 

 slightly rounded on apical margin. 



Described from' 23 males and females from Jalapa, Mexico (Craw- 

 ford), a pair from Acapulco, Mexico (Baker), four from Managua, 

 Nicaragua (Baker), and over 100 from Habana, Cuba (Baker). 



Type-specimen.— C&t. No. 15994, U.S.N.M. 



MEGAMELUS ERECTUS NIGER, new variety. 



Similar to species in most characters, but differing in color and 

 slightly in male genitalia. Color uniformly darker than average for 

 species, scutellum, abdomen, frons between carinae, antennae except 

 apex of II dark brown or black; remainder light brown; pronotum 



