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



spot of the elytra is extended to the humeral angle and the 

 posterior spot is larger and reaches nearly to the apex and 

 encloses about three large clear areoles. The present species 

 differs from obliqna O. & D. in the form of the expanded 

 pronotal margins, the character of the areoles and other 

 points. 



Holotype (No. 330), male, from San Diego, in collection 

 of the California Academy of Sciences. 



Allotype, female, from San Diego, in author's collection. 



Paratypes, in both collections and in that of Mr. Giffard. 



62. Corythiicha fiiscigera Stal? Lake Co., along the 

 road between Hoberg's Resort and Lakeport on Hoosackia 

 crassifolia, where it was abundant with its young, August 2, 

 1916. This may be distinct from Stal's species, but it agrees 

 much better with Champion's figure than does the preceding. 

 This species and its allies have probably formed the basis 

 for the records of fiiscigera in this country. 



63. Corythiicha eriodictyonae O. & D. Mt. Tamalpais, 

 August 16, 1916; abundant at West Point. Very near 

 sctosa Champ., but perhaps distinct. 



64. Corythucha bullata, new species 



Closely allied to juglandis Fh., a little smaller than the average in 

 that species, with the pronotal hood more spherical posteriorly and the 

 elytral cyst larger and more prominent. Length 3^/4 mm. ; humeral width 

 2 mm. 



Pronotal hood viewed from above globular behind, broader than in 

 juglandis, more produced before, its apex considerably surpassing the 

 second antennal segment, the areoles a little smaller and more numerous 

 posteriorly ; viewed from the side regularly rounded above, not at all 

 subangulate as in that species. Expanded sides of the pronotum appar- 

 ently narrower than in the allied species, surpassing the head by al>out 

 one-half the width of the latter, the rriarginal spines shorter and black 

 only at their extreme tips. The closed elytra more narrowed posteriorly, 

 their discoidal area almost completely elevated in a large subglobular cyst 

 which is more elevated than the median carina of the pronotum. 



Body beneath deep black with the legs and antennae pale ; smooth por- 

 tion of the pronotum and elytral markings fuscous brown, rather paler 

 than in juglandis, the expanded areas whitish hyaline with the nervures 

 soiled white ; dorsal aspect of the pronotal hood brown, with the center 

 of the large areoles paler ; expanded sides of the pronotum with a faint 

 irregular brown cloud exteriorly before .the middle and sometimes a trace 

 posteriorly. Elytra with a broad brown crescent following the humeral 

 margin and usually attaining the discoidal area within, thus leaving a 

 clear spot at the inner anterior angle of the costal area; tumid disk of 



