Vol. XI] VAN DUZEE— NORTH AMERICAN GRASS-BUGS \$\ 



Head moderately oblique, produced beyond eye for a space rather more than 

 length of eye; vertex flattened between antennae; clypeus strongly arcuate; 

 temporal areas large, obscure, nearly smooth; antennae short; segment II less 

 than three times length of I ; III and IV subequal, together nearly as long as 

 I and II together. Pronotum coarsely punctate: scutellum obscurely rastrate 

 but scarcely wrinkled. Vestiture long, white, nearly erect on head and prono- 

 tum. Beneath polished, with sparse, rather long white pubescence, longer on 

 the male genital segment. Sinistral male clasper broadly curved, its apex 

 exceeded by the long dextral clasper. 



Color, deep polished black, a little bronzed on the pronotum; rostrum and 

 legs fulvous, tibiae becoming whitish testaceous as are the coxae; orifices and 

 narrow margin of coxal cavities white; membrane uniformly fuscous; apex 

 of first antennal segment sometimes castaneous. 



Described from three males taken by me in Balboa Park, 

 San Diego, Calif., April 9, 1913. This species may be dis- 

 tinguished by the small, nearly round eyes, the fulvous legs 

 and pale coxae. 



Holotype, male, No. 807, Mus. Calif. Acad. Sci. 



Type locality, Balboa Park, San Diego, Calif. 



A study of this genus with larger material at hand has 

 enabled me to correct some former errors made by me. All 

 the species in this genus have the head somewhat exserted 

 with a black calloused area on the posterior face of the eye 

 about which is a pale arc. As will be seen, many of our 

 species, especially solani Heid., have the pronotum distinctly 

 punctate, thus throwing them into Division Capsaria, ac- 

 cording to my key of 1916, where they would run to Lygidea 

 nearly, but their broader form, more hairy surface, black 

 color and more exserted eyes, with the ocular callous men- 

 tioned above, will separate them. In the key of 1916, under 

 Irbisia (page 207) the word "close," beginning the last line, 

 should read "closer." The following key will distinguish 

 our species : 



Surface dull, opaque or nearly so 1 



Surface distinctly polished _ — 2 



1. Posterior lobe of pronotum coarsely, transversely wrinkled, impunct- 



ate; head shorter; vestiture conspicuous, yellowish; legs black, 

 apex of coxk, trochanters and tibiae in part pale, 1, sericans Stal 



Posterior lobe of pronotum finely, transversely wrinkled and ob- 

 scurely punctate; head longer; upper surface sparsely clothed with 

 very minute gray pubescence ; legs castaneous, darker on the fe- 

 mora. 2. castanipes, new species. 



2. Face, viewed from side, regularly arcuated from base of vertex to tip 



of clypeus, not flattened between antennae; vestiture sparse, white; 

 legs fulvo-testaceous, the femora invaded with black; length 6 

 mm. 6, arcuata, new species. 



