l68 ENTOMOLOGICAL NEWS [Apr., 'l/ 



1914; Sissons, July 5, 1900 (type material); Shasta County 

 and Mariposa County." This species occurs in southern Ore- 

 gon. 



54. A. mariposa Horn. 



"A species of the middle and southern Sierras. I, however, 

 have specimens from Sonoma County and Lake Tahoe and it 

 no doubt extends farther north." 



55. A. dolorosa Fall. 



"A southern species. I have specimens from Lake and 

 Mariposa Counties, and it probably extends much farther 

 north." 



5G. A. hornii Fall. 



"Of this Arizona species I have seen what I consider typi- 

 cal specimens from near Placerville, El Dorado County, July, 

 1906 as well as from Mt. San Jacinto, in southern Cali- 

 fornia. I have also seen a phase in which the marginal patch 

 of yellow is broken up into large blotches (otherwise not dif- 

 ferent) from near Placerville, Siskiyou County, and from Tuo- 

 lumne County." 



57. A. gemina Horn. 



"This species is widely distributed in the State, though no- 

 where common. It is generally to be found resting on twigs 

 or in flowers, such as those of the wild buckwheat, Eriogomtin. 

 I have specimens from Mariposa and El Dorado Counties, and 

 have seen them from much farther to the north. There are 

 two fairly distinct phases, the var. nebiilosa Horn, in which 

 the markings are much broken up, and the typical form, in 

 which the markings are of a lineate type. These phases, how- 

 ever, mate indiscriminately and may be found in the same 

 territory." 



58. Agrilus politus Say. 



Abundant throughout the West. Chiefly found on willow 

 in which it breeds, but also on live oak, the fine twigs of which 

 it often prunes, the larvae girdling the twig within the bark. 

 There is a blue phase (perhaps a distinct species), which 

 seems to be confined to the alder. 



