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



Described from one pair taken by Mr. Giffard at Niles 

 Canyon, June 13, 1917, and three females from Crystal 

 Springs, San Mateo Co., taken June 25, 1916. The male and 

 one female want the brown line on the inner margin of the 

 clavus. This form is closely related to pcndula and might be 

 taken for a pale form of that species, but I believe the charac- 

 ters given are of specific value. 



Holotype (No. 344), male, from Niles Canyon, in collec- 

 tion of the California Academy of Sciences. 



Allotype, female, from Niles Canyon, in collection of Mr. 

 Giffard. 



Paratypes in collections of Mr. Giffard and the author. 



142. Paraproba nigrinervis, new species 



Aspect of cincta, more slender and uniformly pale greenish white, eyes 

 black; antennas, nervures of the membrane and tip of the cuneus fuscous. 

 Length to tip of membrane 4^^ mm. 



Head more produced and narrowed behind than in pcndula, with the 

 eyes more prominent, hemispherical in the male ; front vertical, the clypeus 

 prominent. Antennae long and slender, about as long as the entire body 

 to the tip of the membrane ; first segment as long as the head viewed from 

 above ; second nearly four times the length of the first and about one-half 

 its thickness ; third two-thirds the length of the second ; fourth a little 

 shorter than the third, the last two setaceous. Rostrum attaining the base 

 of the venter, the first segment passing the base of the head. Pronotum 

 narrow, its basal width hardly more than one-third greater than the 

 length ; anterior margin short, about equal to the base of the head ; cal- 

 losities obvious, but not prominent; base of the scutellum well exposed. 

 Elytra long and parallel, a little flaring at apex, the tip of the abdomen 

 about attaining the base of the cuneus in the male. Cuneus very long, 

 about three times its basal width, obtuse at apex. Upper surface sparsely 

 clothed with soft white hairs. Color a tender greenish or yellowish white, 

 the corium and cuneus more deeply tinted with green. Antennce infus- 

 cated, the basal segment almost black ; base of the first and second seg- 

 ments paler ; nervures of the membrane heavy and fuscous except on their 

 basal third, with the infuscated apex of the cuneus forming a conspicuous 

 transverse black line acutely angled at its middle. Tarsi very slightly 

 infuscated. 



Described from twelve examples representing both sexes, 

 taken by Mr. Giffard and myself from grape vines at Laurel 

 Dell on the Blue Lakes, Lake Co., August 3, 1916, a male 

 taken by Mr. Giffard at Niles Canyon, June 13, 1916, and a 

 female taken at Muir Woods in August, 1916. Mr. Giffard 

 also took numbers of this species at Fallen Leaf Lake, August 

 21, 1916, and at Yosemite in June, 1916. Diaphnidia provan- 

 chcri has somewhat the aspect of this insect but the head is 



