626 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



MEGAMELUS PUELLIS MEXICANUS, new variety. 



Similar in general size and appearance to the species, differing in 

 color as follows: Pronotum and scutellum white between lateral 

 carinas, and former white on lateral margin behind eyes. Male geni- 

 taha similar but stj^les broadened at apex and extending on inner 

 margin into a long acute prolongation. 



Described from one male from Jalapa, Mexico (Crawford). 



Type-specimen.— C&t. No. 15995, U.S.N.M. 



MEGAMELUS PACIFICUS, new species. 



Plate 48, fig. L. 



Proportions and size similar to M. puellis; general color hght brown- 

 ish to dark brown, abdomen darker; scutellum black or dark brown 

 outside of lateral carinse, latter pale yellowish; antennae and legs 

 yellowish; elytra brown. 



Head narrow, short; vertex small, with a black fovea in each com- 

 partment; frons narrow, sides subparallel; carinas of head and thorax 

 moderately pronounced. Legs long, slender; hind tibiae considerably 

 longer than femora; calcar rather large, margin finely dentate. 

 Elytra typical. 



Male pygofers somewhat similar to M. puellis; styles stouter, 

 broadened at apex, divergent; apical margin slightly concave. 



Described from about 70 specimens, both sexes, from California 

 (Baker), 2 males from Arizona (Baker), and 1 male from Mexico 

 (Baker). 



Type-specimen.— O^i. No. 15996, U.S.N.M. 



MEGAMELUS BASIVITTA Van Duzee. 

 Plate 49, fig. G. 

 Liburnia basivitta Van Duzee '09:202. 



Average length 1.9 mm.; width of vertex, 0.15; width of frons, 

 0.20; antennae, I, 0.08, II, 0.19. General color dark brown (sometimes 

 black) to Hght brown; frons always a Uttle darker than remainder 

 of body, often black, with carinas narrowly pale; second antennal 

 segment usually lighter except at base; legs pale, abdomen often 

 darker than thorax. Body rather small, slender. 



Head distinctly narrower than pro thorax; vertex narrow; nearly 

 square; frons long, a Httle more than twice as long as broad, sides 

 nearly straight, shghtly constricted above; antennae reaching to 

 clypeus, I scarcely haK as long as II. Pronotum moderately long; 

 elytra (macropterous) heavily margined apicaUy; (brachypterous) 

 reachuig nearly or quite to tip of abdomen, fulvous. Legs rather 

 slender; hind tibiae shghtly longer than femora; calcar not long, 

 margin very finely dentate, blacL 



