170 MUSIC. PUBLICATION 4 7 0, TJ. S, DEPT. OF AGRICULTURE 



Chri/sobothris califomica Horn, 1886, Amer. Ent. Soc. Trans. 13: 93, 120 (part) ; 

 Kerremans, 1892, Soc. Ent. de Belg. Mem. 1: 208 (part); Charnberlin, 

 1925, N. Y. Ent. Soc. Jour. (1924) 32: 191 (separate, p. 190) (part) ; 1926, 

 Cat. Buprestidae North Amer., p. 141 (part) ; Obenberger, 1934, in Junk 

 (pub.), Coleopt. Cat., pt. 132, p. 613 (part). 



Female, — Broadly elongate, strongly flattened above, rather strongly shining, 

 brownish black on the smooth elevations, slightly cupreous in the depressions; 

 beneath purplish, with a slight greenish reflection in certain lights, and more 

 strongly shining than above. 



Head purplish, with a short, broad, longitudinal, smooth carina on occiput; 

 front nearly flat ; surface coarsely, irregularly, confluently punctate, with numer- 

 ous irregular, elevated, smooth spaces, sparsely clothed with short, inconspicuous 

 hairs ; clypeus broadly, arcuately emarginate in front, broadly rounded on each 

 side. Antennae missing on type. 



Pronotum twice as wide as long, slightly wider at base than at apex, widest 

 along middle ; sides slightly, arcuately rounded and somewhat sinuate ; anterior 

 margin strongly, arcuately emarginate, with a vague, broad, median lobe ; base 

 shallowly, broadly emarginate on each side, median lobe slightly produced and 

 broadly rounded; disk moderately convex, uneven, with a vague, longitudinal, 

 median depression, limited on each side at apical half by a broad, irregular, 

 smooth callosity; surface with numerous small, irregular, smooth rugae, inter- 

 vals densely, irregularly punctate. 



Elytra distinctly wider than pronotum, nearly twice as long as wide, widest 

 behind middle; sides slightly diverging from humeral angles to behind middle, 

 then arcuately converging to tips, which are separately broadly rounded ; 

 lateral margins slightly serrate; basal depressions broad and deep; humeral 

 depressions broad and shallow; surface glabrous, densely, finely, irregularly 

 punctate, with numerous irregular, elevated, smooth spaces, the first costa on 

 each elytron rather distinct and elevated on apical third. 



Abdomen beneath rather densely, finely punctate, sparsely clothed with short, 

 recumbent, inconspicuous hairs, without distinct lateral callosities, intervals 

 nearly smooth; last visible sternite broadly rounded at apex, without a sub- 

 marginal ridge, lateral margins crenulate; eighth tergite vaguely emarginate at 

 apex, coarsely, densely punctate, not longitudinally carinate. Prosternum 

 coarsely, densely punctate, punctures transversely confluent, nearly glabrous ; 

 anterior margin slightly sinuate, without a distinct median lobe. (Anterior, 

 posterior, and left middle legs missing.) 



Length 16.5 mm., width 7 mm. 



Bedescribed from the female type. No. 2699, in the Museum of 

 Comparative Zoology, Cambridge, Mass. 

 Male. — Unknown. 



Type locality. — "East of Fort Colville," Oreg., type simply labeled 

 with a dark-blue disk. 



Distribution. — The only specimen examined which can be consid- 

 ered as this species is the female type, labeled with a dark-blue disk 

 in the LeConte collection, and placed as No. 4 under califomica by 

 George Horn. 



Host . — Unknown . 



LeConte described the species from material collected by George 

 Gibbs, who was connected with the Northwest Boundary Commis- 

 sion. Horn (1886) placed this species as a synonym of caJifornica. 

 stating that it is a smaller form, but his statement is incorrect, for 

 vulcanica is quite distinct from califomica. Fall (1910) pointed out 

 that specimen No. 5 under califomica in the LeConte collection is 

 probably vulcanica, but that specimen has the last visible abdominal 

 sternite deeply, narrowly emarginate at the apex, and seems to be 

 canadensis. The tip of the last visible abdominal sternite of the type 

 of vulcanica seems to be more or less deformed, and is more or less 

 rounded when seen from the underside of the body, but when viewed 

 from the end the tip seems to be bent upward and slightly emarginate. 





