retieulato, anteriorly with four or five of tlie meshes arranged hingitudi- 

 nally on either side of the median line, the first three or four thrown 

 together. 



Wings with outer half irregularly somewhat smoky; a hyaline area on 

 second recurrent nervure; second submarginal cell large and pentangular. 

 First abdominal tergite rugosely punctate basally to nearly smooth api- 

 cally, the crenulate ventral ridge very weak and with a small tooth at 

 Extreme base. Felt lines concolorous. A fringe of plumose hairs on the 

 second segment only. 



Occasional at Clareniont, California. 



4344 Photopsis nudata u. sp. 



Length 11 mm. Color light ferruginous, the legs proximally, and the 

 antennae, somewhat paler. Pubescence mostly white and quite copious, 

 especially on the abdomen. 



Second article of flagellum but slightly longer than the first. Mandibles 

 with the emargination below barely evident and the subtending tooth 

 very small. Interoeellar space pieeous. 



The depressed area on mesopleurae above is very large and shallowly 

 retieulato-punctate, bounded caudad by a sharp brown carina which is 

 extended the whole length of the sclerite; caudad of the carina the sur- 

 face is far more weakly sculptured than below. Metanotum very strongly 

 and coarsely but quite irregularly reticulate, the meshes varying much 

 in size and number of angles. Wings with the outer half smoky and with 

 a hyaline area over the second recurrent nervure; second submarginal 

 cell pentangular, the marginal unusually distinctly truncate. 



First abdominal tergite rugosely punctate basally to nearly smooth 

 apically, the crenulate ventral ridge strong and bisinuate but without 

 prominent teeth. Felt lines concolorous. The second segment entirely 

 lacks a fringe of short plumose hairs though it has many long simple 

 ones. 



Collected at Claremont, California. In the absence of a fringe of plu- 

 mose hairs on second abdominal segment and in the mesopleural charac- 

 ters this species differs remarkaV)ly from all others of this collection. 

 4336 Photopsis dlfficilis n. sp. 



Length 6.5 mm. Color light ferruginous, the legs, scape, and funicular 

 joint of antennae, testaceous, the flagellum pieeous. Pubescence mostly 

 whitish and quite copious. Second article of flagellum a fourth longer 

 than the first. Mandibles tridentate, below not very deeply emarginated 

 but the emargination subtended by a very large and prominent bluntly 

 rounded tooth. Interoeellar space pieeous. 



Mesopleurae including most of the depressed area above evenly coarse- 

 ly retieulato-punctate. Metanotum quite regularly reticulate with four 

 large areas anteriorly, two median longitudinal each formed by the coa- 

 lescence of four meshes, and two short basal transverse areas outside of 

 these formed by the coalescence of two neshes of the reticulum. Wings 



