NO. 2041. THE INSECT FAMILY DELPHACIDAE— CRAWFORD. 617 



Similar to ijeUudda but vertex and frons broader; latter rather 

 conspicuously reticulate. Legs stout ; hind tibiae a Uttle longer than 

 femora; calcar a Uttle more than half as long as basal tarsus, mar- 

 ginal dentation scarcely visible. 



Male genitalia similar to 'pellucida, but styles shorter and more 

 slender, not flexed at tip, much less divergent, parallel at base. 



Redescribed from numerous males and females from Colorado and 

 Nevada (Baker), and Wyoming (Metz). This species bears a close 

 resemblance to both pellucida and consimilis, but seems to be quite 

 distinct in the characters enumerated above. 



MEGAMELUS CAMPESTRIS Van Duzee. 

 Plate 47, fig. P. 

 Liburnia campestris Van Duzee '97:254. 



Length of body, 2.7 mm.; width of vertex, 0.26; width of frons, 

 0.28; antennae, I, 0.09, II, 0.20. General color yellow to light brown; 

 frons brown next to carinse, lighter discally; genae black; pronotum 

 sometimes shghtly brown; scuteUum brown or black outside of 

 lateral carinae; meso and metapleuraa brown; venter of abdomen 

 brown; legs light; elytra subhyahne or slightly brown. 



Head almost as broad as pro thorax; vertex moderately broad; 

 carinae indistinct on apex of head; frons subrectangular, less than 

 twice as long as broad, not strongly carinate; antennae reaching to 

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

 longer than femora; calcar thin, more than half as long as basal tarsus, 

 margin very minutely dentate. 



Aperture of male pygofers irregular, rather broad; genital styles 

 approximate at base, in form of horseshoe, rather flat, broad, and 

 truncate at tip. 



Redescribed from numerous males and females (about 100) from 

 New York, Pennsylvania (Wirtner), Washington, District of Colum- 

 bia (Riley), Michigan, Colorado, Nevada, Arizona, Cahfornia (coll. 

 Baker and others). Some of the specimens were labeled M. lami- 

 nalis, but that species is quite distinct from campestris. 



MEGAMELUS LUTULENTUS Van Duzee. 

 Plate 49, fig. D. 

 Liburnia lutulenta Van Duzee 'S»7:252. 

 Average length 2.4 mm.; width of vertex 0.26; width of frons 0.32; 

 antennae, I, 0.08, II, 0.19. General color dull brown, abdomen 

 darker, often black; frontal carinae obscurely margined with brown; 

 elytra light brown to fuscous. Body small, robust. 



Head almost as broad as pro thorax; rather weakly carinate; frons 

 suboval, carinae almost obsolete above; eyes large. Dorsum moder- 

 ately broad, not strongly carinate. Elytra short. Legs rather short; 



