308 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



the specimens in the collection collected by Schwarz in Texas are 

 labeled " On Croton capitatum and Croton eleagnifolium." 



This species is closely allied to imbellis Crotch, and small speci- 

 mens may be easily confused with that species, but it can be sep- 

 arated from imbellis by having the eyes more acutely rounded beneath 

 than above, and the posterior tarsi of the males are distinctly longer 

 than the tibiae. It was originally described from two small brownish 

 specimens from the Lake Superior region, and at first sight, seems 

 entirely different from the large green examples from Texas, which 

 were described by Le Conte as cuneus, but in carefully examining the 

 two forms no structural character was found for separating them, as 

 the type specimens were almost identical with small specimens from 

 Texas except in color. The two type specimens are male and female, 

 but it was not advisable to extract the male genitalia. LeConte 

 described cuneus from a single example in the Ulke collection, and 

 Crotch (1873), not finding the type in the LeConte collection, subse- 

 quently described it as pubiventris. Chamberlin (1926) gives advena 

 as a synonym, but this name should be dropped from our lists, as it 

 was simply used by LeConte 6 in a list of the Coleoptera of Lake 

 Superior, without giving any description, and it is impossible to 

 determine what species he had before him. 



108. AGRILUS IMBELLIS Crotch 



Figure 84 



Agrilus imbellis Crotch, Proc. Acad. Nat. Sci. Phila., vol. 25, 1873, pp. 94- 

 95. — Schwakz, Proc. Amer. Philos. Soc, vol. 17, 1878, p. 452. — Blan- 

 chard, Ent. Ainer., vol. 5, 1889> p. 32. — Horn, Trans. Amer. Ent. Soc, 

 vol. 18, 1891, p. 332, pi. 8, fig. 14.— Chittenden, U. S. Dept. Agric, Div. 

 Ent., Bull. 22, new ser., 1900, p. 68.— Easton, Psyche, vol. 16, 1909, 

 p. 50.— Wickham, Bull. Buffalo Soc. Nat. Sci., vol. 9, 1909, p. 401.— 

 Smith, Ann. Kept. N. J. State Mus. for 1909 (1910), p. 295.— Nicolay, 

 Bull. Brooklyn Ent. Soc, vol. 14, 1919, p. 20. — Frost and Weiss, Canad. 

 Ent., vol. 52, 1920, p. 223.— Knull, Canad. Ent., vol. 54, 1922, p. 85.— 

 Mtjtchler and Weiss, N. J. Dept. Agric, Bur. Statistics and Inspection, 

 Circ. 48, 1922, p. 9.— Knull, Ohio State Univ. Studies, vol. 2, no. 2, 

 1925, p. 53.— Chamrerlin, Cat. Buprestidae, 1926, pp. 65-66. 



Male. — Form short, rather robust, feebty shining, uniformly aene- 

 ous, and with a slight cupreous tinge; beneath more shining than 

 above. 



Head with the front rather wide, feebly convex, and feebly wider 

 at top than at bottom, the lateral margins vaguely expanded from 

 bottom to top, and with a broad, obsolete, longitudinal groove on the 

 front ; surface coarsely punctate on the front, becoming more or less 

 transversely rugose on the occiput, and sparsely clothed anteriorly 



8 In Louis Agasslz, Lake Superior, 1850, p. 227. 



