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



is pale or fulvous. Mr. Giffard took a long series in San 

 Joaquin Co., near Tracy, the last of May, 1917, on Grindelia 

 camporum. About one-fourth of those taken were males. 

 Some of the females are as deeply colored as are the males, 

 but some are nearly as pale as some examples of dclicatiis 

 from Florida now in my collection. The darker males have 

 the femora mostly black and a black line on the base of the 

 tibiae above, the basal segment of the antennae is black and 

 the front is infuscated below. 



Holotype (No. 378), male, from San Joaquin Co., in col- 

 lection of the California Academy of Sciences. 



Allotype, female, from San Joaquin Co., in collection of 

 Mr. Giffard. 



Paratypes in both collections and in that of the author. 



342. Pissonofiis frontalis Crawf. Mr. Giffard has taken 

 a long series of this species, always on wormwood, Artemisia 

 heterophylla. Among this material the following localities 

 are represented: Santa Cruz Co., June 7, 1917; Niles Can- 

 yon, May, 1916 and 1917, June 13, 1917; near Stockton, 

 San Joaquin Co., May 30, 1917. Three of the males and 

 three of the females were macropterous. These are piceous- 

 black with the pronotal carinse a little whitish anteriorly, the 

 vertex cinerous with the two black punctures distinct and the 

 front mostly black, the base between the eyes being brownish 

 with the white marks nearly obliterated. The elytra are hya- 

 line as is usual in macropterous individuals in this genus with 

 the nervures pale brown and the basal margin of the clavus 

 infuscated. I took what seems to be the same species at 

 Alpine, Fosters, Lakeside and San Diego, all in San Diego 

 Co., during April and May, 1913. 



343. Laccocera vittipcnnis Van D. Tallac, 6000 feet, Au- 

 gust 22, 1916, brachypterous. The male genital characters 

 in this species are subject to considerable variation in both 

 eastern and western material. The ventral process may be 

 very short or considerably produced and the stiles may be 

 nearly terete and broadly divergent or broader and sulcate 

 below and much less divergent. These differences occur in 

 material taken at the same place and time and evidently rep- 

 resent individual variation. 



