622 PROCEEDINGfi OF THE NATION' AL MUSEUM. vol.46. 



MEGAMELUS ALBIDENS, new species. 

 Plate 49, fig. H. 



Length of body 2 mm.; width of vertex 0.21 ; \vidth of frons 0.20; 

 antemias, I, 0.09, II, 0.19. General color black, brown on dorsum 

 of thorax; carinse of head and pronotum pale; frons dark brown 

 between carinae; antennae (except tip of I) and legs light; a white 

 rounded process on each side of pygofer aperture at base of styles; 

 elytra pale, nerves broadly brown on membrane. Body rather 

 small, slender. 



Similar to 21. pueUa superficially in head and thorax. Veins of 

 membrane broadly browned. ]\Iale pygofers moderately long, aper- 

 ture subcircular, margin irregular and sinuate; with a conspicuous 

 process outside of styles at base; anal tube short, subdorsal; genital 

 styles long, acuminate, divergent, flexed out and acute at tip. 



Described from one male from Campinas, Brazil (Baker). 



Type-specimen. — In collection of Pomona College. 



MEGAMELUS ALBIDENS HAVANENSIS, new variety. 



Similar in size and general appearance to the species, but dis- 

 tinctly hghter in color throughout, hght brown; elytra shghtly less 

 browned on membrane veins. Male genital styles shorter, scarcely 

 acuminate, flexed outward at tip but not acute. 



Described from one male from Habana, Cuba (Baker). Perhaps 

 this is a distinct species, but on account of its close resemblance to 

 albidens, it seems more natural to consider it a varietal form only. 



Type-specimen. — In collection of Pomona CoUege. 



MEGAMELUS APPROXIMATUS, new species. 

 Plate 49, fig. F. 



Size and general proportions very similar to M. teapse. General 

 color black, with a broad white vitta on dorsum between lateral 

 carinse from vertex to tip of scuteUum and continued on to clavus; 

 extreme lateral portion of pronotum also white; legs and antennae 

 yeUow; frons black; elytra as in teapx. 



AU variations from teapse are sHght, except male genitalia. Styles 

 longer, simple, shghtly arched and a Httle divergent, apices close. 



Described from two males from Managua, Nicaragua (Baker)- 

 This species appears to be very similar to 21. sagata Fowler, and may 

 be only the macropterous form of it. Because of some apparent 

 differences, however, it is described as a distinct species. 



Type-specimen. — In collection of Pomona CoUege. 



MEGAMELUS VANDUZEEI, new species. 



Plate 48, fig. H. 



Average length 2.5 mm.; width of vertex 0.21; width of frons 0.27; 

 antennse, 1, 0.09, II, 0.18. General color brown to hght brown; vertex. 



