202 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



Canada, and various localities in the following States: Connecticut, 

 District of Columbia, Illinois, Indiana. Iowa, Kansas, Kentucky, 

 Louisiana, Maryland, Massachusetts, Michigan, Missouri, New 

 Hampshire, New Jersey, New York, North Carolina, Pennsylvania, 

 Texas, Virginia, West Virginia, and Wisconsin. It has also been 

 recorded by Wickham (1902) from Colorado, Cockerell (1898) from 

 Gallinas Canon, New Mexico, and by Frost (1912) from Maine. 



Variations. — The species is quite variable, and is represented by 

 two forms, the extremes of which seem to indicate two species, but 

 by a careful study of a large series of examples from all localities, 

 no valid character could be found for separating them. The form 

 found in the northern part of the country is the one described by 

 Gory as obsoletoguttatus and nigricans. Gory in describing the 

 former gives subaeratus Harris (manuscript name) which was prob- 

 ably collected in Massachusetts. This form is usually of a bronzy 

 black color, and the pubescent spots are composed of whitish hairs 

 and are only feebly indicated. The form found in Texas and the 

 Southern States was described by LeConte as inter^uptus and is 

 usually olivaceous brown, with the pubescent spots composed of 

 yellowish hairs, and are usually quite distinct. 



The pronotum is more or less variable in shape, and in some speci- 

 mens the sides are obliquely expanded from base to near the apex, 

 whereas in others they are nearly parallel to each other along the 

 apical half. The median depressions on the pronotum are quite dis- 

 tinct in some examples, whereas in other examples, one or sometimes 

 both of these depressions are only feebly indicated. In some speci- 

 mens, especially those from the south, the sides of the pronotum, 

 sides of the sternum, and spots at sides of abdomen are densely 

 covered with whitish efflorescence. 



Hosts. — This species has been reared by J. N. Knull from dead 

 branches of beech {Fagus grandifolia Ehrhart, Synonym F. ameri- 

 cana Sweet) ; blue beech {Carpinus caroliniana Walter) ; ironwood 

 or hop-hornbeam {Ostrya mrginiami (Miller) Koch) ; red oak 

 {Quercws rubra Linnaeus); hickory (Hicoria sp.), and sweet birch 

 {B etui a lentit Linnaeus). 



67. AGRILUS LAUTUELLUS, new species 



Figure 48 



Male. — Form resembling that of ornatulus Horn ; head green, with 

 a feeble bronzy tinge in front, becoming bronzy brown on the occiput ; 

 presternum and elytra moderately shining, bronzy brown, with more 

 or less distinct cupreous tinge, the elytra sometimes with a violaceous 

 tinge on the postmedian glabrous area, and with distinct pubescent 

 designs; beneath cupreous brown, the legs slightly bronzy, and more 

 shining than above. 



