234 MISIC. PUBLICATION 47 0, U. S. DEPT. OF AGRICULTURE 



Type locality. — Skull Valley, Utah. 



The genus Knowltonia was erected for this species by the writer 

 because of the bipectinate antenna of the male, the drawing of the 

 male antenna of atrifasciata figured by Horn (1886) having been 

 overlooked. Since that time more material of Chrysobothris has been 

 available for study and this peculiar character of the males has been 

 found in atrifasciata, biramosa, and alleni, so the genus Knowltonia 

 must be placed as a synonym of Chrysobothris. 



This species was described from a single male collected July 6, 

 1934, by C. F. Smith, and so far is the only specimen seen. Nothing 

 is known of its larval habits. 



(107) Chrysobothris ulkei LeConte 



(Fig. 101) 



Chrysobothris ulkei LeConte, 1859, Amer. Phil Soc. Trans, (n. s.) 11: 240; Gem- 

 minger and Harold, 1869, Cat. Coleopt, v. 5, p. 1428 ; Horn. 1886, Amer. Ent. 

 Soc. Trans. 13 : 116, 117, pi. 7, fig. 243 ; Kerremans, 1892, Soc. Ent. de Belg. 

 Mem. 1: 222; Horn, 1894, Calif. Acad. Sci. Proc. (ser. 2) 4: 368; Chamberlin, 

 1926, Cat. Buprestidae North Amer., pp. 175-176 ; Obenberger, 1934, in Junk 

 (pub.), Coleopt. Cat., pt. 132, p. 656. 



Figure 101. — Clypeus (A) and last visible abdominal sternite of female (B) of 



Chrysobothris ulkei. 



Female. — Broadly elongate, moderately convex above, subopaque, bronzy green, 

 with a faint bluish tinge, elytra ornamented with violaceous spots ; beneath 

 bronzy green, more strongly shining than above. 



Head uniformly bronzy green, with a narrow, longitudinal carina on occiput ; 

 front slightly convex ; surface coarsely, shallowly, rather densely punctate, clothed 

 with a few short, inconspicuous hairs, intervals densely granulose; clypeus 

 broadly, shallowly, arcuately emarginate in front, obliquely subtruncate on each 

 side. Antenna purplish brown, slightly bronzy at base, slightly narrowed to apex ; 

 intermediate segments not strongly compact, slightly wider than long, broadly 

 subtruncate at outer margins ; third segment slightly longer than following three 

 segments united. 



Pronotum twice as wide as long, distinctly narrower at apex than at base, 

 widest at basal third; sides obliquely converging from basal third to posterior 

 and anterior angles ; posterior angles very broadly rounded ; anterior margin 

 slightly sinuate, with an obsolete, broadly rounded, median lobe; base trans- 

 versely truncate on each side, median lobe strongly produced and broadly rounded ; 

 disk moder'ately, uniformly convex, without depressions or callosities; surface 

 glabrous, coarsely, irregularly punctate, sparsely on median part, more densely 

 toward sides, with an elongate, smooth, median area in front of scutellum. 



Elytra scarcely wider than pronotum, about one and one-half times as long as 

 wide ; sides parallel from humeral angles to apical third, then arcuately converg- 

 ing to tips, which are separately broadly rounded, but not extending to tip of 

 abdomen ; lateral margins coarsely serrate posteriorly ; basal depressions trans- 

 verse and very deep; humeral depressions rather broad and shallow; surface 

 glabrous, coarsely, confluently punctate, more or less rugose, intervals densely 



