580 PROCEEDINGS OF THE NATIONAL MUSEUM. 



this character. Cross sections were made of the pits and the sections 

 examined microscopically, but they seem to be onlysimple pits without 

 any glandular connection. 



KEY TO THE SPECIES. 



o". Legs lineated with black or brown. 



bK Vertex considerably broader than long; genital styles of male long, as long as 

 to processes of anal tube, rather slender, pygofer with a carina below and be- 

 tween styles vittipennis Van Duzee. 



b'^. Vertex only slightly broader than long or square; genital styles about half as long 



as above, stout; pygofers without carina obesa Van Duzee. 



fl2. Legs not lineated, unicolorous; vertex nearly square. 



b^. Anal tube of male with ventral processes very short; clypeus and labrum black 

 or brown ; legs brown to flavous. 

 c'. General color yellow and black rather sharply contrasted. . .zona fa Van Duzee. 

 c^. General color dull flavous, abdomen with brown markings. 



zonataflava, new variety. 



b'. Anal tube of male with two very long, horn-like processes on ventral margin; 



clypeus and labrum yellow; legs yellow bicornata, new species. 



LACCOCERA VITTIPENNIS Van Duzee. 



riate45, figs. N. Q. 



Laccocera vittipennis Van Duzee '97:242. — Swezey Va;:36. 

 Delphacirvas vittatus Gillette and Baker '95:69. 



Length of body 3 mm.; width of vertex 0.38; width of frons 0.38; 

 antennae, I, 0.17, II, 0.28. General color brown, variable in shade; 

 vertex and tergum betM^een lateral carinas yellowish; frons brownish 

 or brown with yellow intermixed to some extent, with carinas always 

 yellow; clypeus dark brown to black with carinse pale; eyes brown 

 to black; genae and antennae dark brown; pleura brown and yellow; 

 elytra pale brown, witli darker brown vitta on each margin; legs 

 yeUow, banded with black; abdomen dark, with yellow on doi-sal 

 portion of first three segments and narrower area along dorsum of rest 

 of segments, and on lateral margin of tergites; ovipositor sheath more 

 or less yellowish brown. 



Head broad, with eyes fuUy as broad as or broader than prothorax, 

 very broad between eyes, relatively short; vertex subrectangular, 

 considerably broader than long, converging a little toward front, 

 produced a little beyond eyes ; with two small pits in each lateral fovea; 

 frons large, rather six-sided, broadest about at ocelli, broader above 

 than below; with four i)its on each side of median carina and three 

 (or more) next to each lateral carina on inside. Antennae moder- 

 ately long, slender, terete, I not quite half as long as II. 



Thorax broad ; pronotum considerably shorter than vertex, deeply 

 and broadly emarginate behind; lateral carinas prominent, extending 

 to lateral margin, pitted closely on posterior incline for fully two- 

 thirds its length from apex. Legs long, slender; anterior and middle 

 femora and tibiae very slightly compressed; calcar thick at base, not 



