316 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



fuscous or black; the metapleura sometimes with a black spot. Legs, 

 antennas and rostrum pale, the femora sometimes faintly lineated, the 

 rostrum tipped with black. Apex of the tarsi black. 



Described from four male and nine female brachypterous 

 examples taken by Mr. Giffard at Portland. Oreg., July 3, 

 1917, and Seattle, Wash., July 7, 1917. One macropterous 

 female taken at Portland is darker with the abdomen, pectus 

 and fovse of the face mostly black and the elytra quite deeply 

 fuliginous. This species is very close to kilmani, but the 

 vertex is shorter with its carinse less acute, the front is dif- 

 ferently marked and the whole insect is paler in color. The 

 male genitalia are very similar in the two species, but in 

 semicinctits the aperture of the pygofers is more transverse, 

 the plates are not as straight across, are broader and less 

 acute at apex and are without the fring of hairs found in 

 kilmani and the anal process is more incurved at apex and 

 differently shaped. The female may be distinguished from 

 muiri by the shorter vertex, the more curved lateral pronotal 

 carinse, the different markings in the frontal fovge and the 

 want of a regular fuscous line exterior to the lateral carinje 

 of the front. 



Holotype (No. 381). male, from Portland, in collection of 

 the California Academy of Sciences. 



Allotvpe. female, from Portland, in collection of Mr. Gif- 

 fard. 



Paratypes in both collections and in that of the author. 



350. Lihurnia consiinilis Van D. San Francisco. May, 

 1916; Portola Valley. San Mateo Co., May 4, 1917; near 

 Stockton, May 31, 1917; Blue Lakes. Lake Co., August 3. 

 1916; Yosemite. June 16, 1916; Tallac, August 22,' 1916; 

 Soda Springs, Placer Co., August 24, 1916. This is the 

 most abundant and widely distributed delphacid in Califor- 

 nia. The males are ordinarily black with the pronotum more 

 or less invaded with white posteriorly. Some females are 

 almost as deeply colored as are the males, but generallv they 

 are much paler and even become fulvous with the basal angles 

 of the pronotum black, when they much resemble canipestris, 

 but they can always be distinguished from that species by 

 the narrower and longer vertex with more distinct carinse 



