NO. 2041. THE INSECT FAMILY DELPHACIDAE— CRAWFORD. 581 



very large. Elytra long, slender; brachypterous forms predominate 

 in both sexes. 



Abdomen large, broad. 



Male genital segment large, conspicuous, margin of aperture deeply 

 emarginate at base of styles; anal tube short, with two short processes 

 on ventral margin; genital styles long, strongly diverging, straight, 

 three-faced, acute at tip, about as long as to tip of anal tube processes. 



Redescribed from one macropterous female fi'om Mount Washing- 

 ton, New Hampshire (a paratype of the original specimen?), 5 ma- 

 cropterous females, 19 brachypterous males and over 50 brachypterous 

 females all from Colorado (Baker), and several from Ormsby County, 

 Nevada (Baker). 



LACCOCERA ZONATA Van Duzee. 



Laccocera zonataYAN Duzee '97:243. — Swezey '0-^:36. 

 Delphacinus zonatus Gillette '95:69. 



Length of body, female, 4 mm.; male, 2.9; width of vertex, 0.35; 

 width of frons, 0.39; antennae, I, 0.10, II, 0.22. General color yeUow 

 and black; head except clypeus, prothorax and scuteUum entirely 

 bright yeUow; elytra, clypeus, venter, and abdomen shining black 

 except a conspicuous yellow spot on base of abdomen above extend- 

 ing to tip in a more or less continuous stripe; legs flavous brown 

 throughout. 



Quite similar in general characters to vittipennis, differing as foUows : 

 Head not broader than prothorax, sometimes slightly narrower; 

 vertex more nearly square, not broader than long or even slightly 

 longer than broad, pitted as in vittipennis; frons similar in shape, 

 basal and clypeal margms subequal; eyes quite compressed anteri- 

 orly; first antennal joint relatively shorter, only about one-third 

 as long as II. Pronotum longer, not so deeply emarginate behind; 

 legs not striped; hind tibiae very stout, especially distad; male genital 

 segment similar; processes of anal tube longer; genital styles equally 

 long, large at base, abruptly slender and flexed inward midway, quite 

 different in appearance from vittipennis. 



Redescribed from many brachypterous specimens of both sexes 

 from Ormsby County, Nevada (Baker); one macropterous female 

 from Nevada, but elytra broken. 



LACCOCERA ZONATA FLA VA, new variety. 



Very similar in all characters, except color, to the species. Color 

 almost uniform light flavous, with faint brown markings on abdomen 

 and venter. Three females out of more than 100 specimens show 

 this character with almost no intergradation. Very probably this 

 is not more than a varietal form of the species — scarcely a seasonal 

 variation, however, as all the specimens were apparently taken at 

 the same time of the year. 



Type-specimen. — In coDection of Pomona College. 



