NORTH AMERICAN BUPRESTID BEETLES 69 



Minnesota : No definite locality. 

 Missouri : No definite locality. 



Nebraska: West Point, June, 1888 ( ). 



Ontario: Kearney, July 9, 1909 (Van Duzee). 



Prince Edward County, July 2, 1922 (Brirnley). 

 Virginia: Fairfax County, June 16, 1923 (Nicolay). 

 West Virginia: French Creek, reared (Brooks). Terra Alta, June 29, 191S 



(Rohwer). 



Variations. — Rather uniform in size, but the females varying con- 

 siderable in color as noted above in the description. The prehumeral 

 carinae are quite variable and in some examples the scutellum is 

 feebly carinate, whereas in others the carina is entirely absent. 



Host. — This subspecies kills the twigs of Hazel {Corylus americana 

 Walter) from which F. E. Brooks has reared the adults. This form 

 is of considerable economic importance to those who are interested 

 in the growing of hazelnuts. 



I have considered specimen number 7 of the arcuatus series in the 

 LeConte collection as the type, although number 6 of this series has 

 the LeConte label on it. This specimen is without a locality label, but 

 the figures are in German, and the specimen agrees very well with 

 the description, which was made from a single example received from 

 Mr. Schuster, from Missouri. Specimen number 6 is labeled " Illi- 

 nois " and is the specimen noted by LeConte in his original descrip- 

 tion as probably a variety of fulgens. The LeConte species label has 

 a number of pin holes in it, which shows that it has been removed 

 from the pin a number of times, and it is just possible that it has 

 been replaced on the wrong specimen. 



AGRILUS ARCUATUS subspecies TORQUATUS LeConte 



Agrilus torquatus LeConte, Trans. Amer. Philos. Sue, vol. 11, 1859, p. 243. — 

 Crotch, Proc. Acad. Nat. Sci. Phila., vol. 25, 1873, p. 92. — Hubbard and 

 Schwarz, Proc. Amer. Pliilos. Soc, vol. 17, 1878. pp. 636, 656.— 

 Blanchard, Ent. Amer., vol. 5, 1889, p. 32. — Horn, Trans. Amer. Ent. 

 Soc, vol. 18, 1891, pp. 296-297.— Ruggles, 17th Kept. State Ent. Minn., 

 pp. 15-19, text figs. 1-3, pi. 1, figs. 1-4 (erroneous identification = 

 arcuatus (obliquus LeConte.) Say). — Frost and Weiss, Canad. Ent.. 

 vol. 52, 1920, p. 207. 



Agrilus arcuatus (Say) Frost and Weiss, Canad. Ent., vol. 52, 1920, p. 206 

 (part).— Knuix, Ent. News, vol. 31, 1920, p. 10 (part) ; Canad. Ent., 

 vol. 54, 1922, p. 85 (part). — Mutchler and Weiss. N. J. Dept. Agric, 

 Bur. Statistics and Inspection, Circ. 48, 1922. pp. 5-7 (part). — Brooks. 

 15th Kept. Northern Nut Growers Assoc, 1924, p. 73. — Knull, Ohio 

 State Univ. Studies, vol. 2, no. 2, pp. 42-43 (part). — Brooks, Journ. 

 Agric. Research, vol. 33, no. 4, 1926, pp. 331-338, figs. 1-3 (life his- 

 tory). — Chamberlin, Cat. Buprestidae, 1926, pp. 51-52 (part). 



Male. — Form of arcuatus; head bluish green, becoming reddish 

 cupreous on the occiput, and the surface densely, coarsely punctate 



