COLEOPTERA OF SOUTHERN CALIFORNIA. 241 



paler color, more shining surface, less widely separated 

 eyes, and coarser punctures of the prosternal flanks. In 

 all my examples of H. simplex the last joint of the 

 maxillary palpi is externally sinuate toward the apex; 

 this is not at all evident in H. flavidus. 



53. Agrilus gibbicollis, sp. nov. 



Kobust, olivaceous bronze, feebly shining, sides of prothorax with 

 whitish pubescence and efflorescence, elytra with entire pubescent vitta. 

 Antennge short, scarcely passing the upper margin of the eye when directed 

 upwards, serrate from the fifth joint, seventh and following joints as wide 

 as long. Head convex, front densely clothed with short yellowish brown 

 hair, apparently not impressed. Prothorax nearly as long at middle as 

 wide; sides rather broadly arcuate in front, posteriorly oblique and dis- 

 tinctly sinuate before the hind angles, which are a little prominent and 

 slightly acute; disk strongly convex in front, gibbous when viewed in 

 profile; surface punctate and concentrically strigose, more strongly so in 

 front; hind angles moderately carinate; lateral margin sinuate when 

 viewed from the side. Scutellum not carinate. Elytra a little sinuate at 

 sides; the abdomen more strongly so, its sides visible from above behind 

 the middle; tips rounded and serrulate. Prosternal lobe broadly rounded, 

 subtruncate at middle; prosternal process nearly parallel, the visible apex 

 truncate; sides of body beneath, and vertical portions of ventral segments 

 with whitish pubescence and efflorescence. Pygidium without projecting 

 carina. Claws moderately toothed at middle. 



Length, 7 mm. 



Described from a single female example taken by Dr. 

 Fenyes, near San Bernardino, in June. Another speci- 

 men seen in the Horn Collection was there placed with 

 A. blandus. The gibbous prothorax with carinate hind 

 angles, and non-carinate scutellum, easily distinguish 

 A. gibbicollis from A. blandus, to which it bears only a 

 superficial resemblance. By Horn's table, it would fall 

 with A. abductus and A. palmacollis, in both of which 

 the scutellum is carinate and the thorax normally 

 convex. 



16 October 21, 1901. 



