78 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



New Jersey: Clementon, May 21; South Orange, June 10 ( ). Lakehurst, 



June 16 (L. B. Woodruff). 

 New York: Wading River, Long Island, June 23 (A. Nicolay). 

 Pennsylvania : New Bloomfield, May 23 ; Pond Bank, May 25 ; Hummelstown, 



May-June (J. N. Knull). 

 Texas: Dallas, April 20 (Schwarz and Pratt). 



Recorded also from : 



Kansas: No definite locality (LeCoute, 1859). 

 New Jersey: Malago, May; Upper Montclair, July (Nicolay). 

 New York: Massapequa, May-June (Shoemaker). Pine Lawn (Olsen). Wyan- 

 danch, July 4 (Schott). 



Variations. — Length 3.5 to 5 millimeters. The front of the head 

 in the males vary in color from a bronzy green to a greenish blue, 

 the median part of the pronotum from bronzy green to bluish black, 

 and becoming more greenish blue toward the sides. The pronotum is 

 sometimes widest at the middle, with the sides feebly arcuately 

 rounded, the median depressions more or less variable in depth, 

 and in a few examples are onty feebly indicated. 



Host. — This species has been reared by Knull (1920) from dead 

 branches of white oak (Quercus alba Linnaeus). 



This species is confused in collections with otiosus, but there 

 should be no difficulty in separating the males from that species. 

 The males of defectus have the last abdominal segment truncate at 

 apex and clothed with a dense marginal fringe of long hairs, which 

 are curved downward, but in the females these hairs are less con- 

 spicuous and sometimes nearly obsolete. Horn (1891. p. 294) states 

 that " It is evident that LeConte had before him a male of this 

 species which he mistook for the male of lacustris, but I failed to find 

 the specimen at present associated with that species, and discovered 

 that it had been removed and placed with the present species eithei 

 by himself, or later by Crotch." There seems to be some error 

 about this statement as there are only tAvo specimens in the LeConte 

 collection under this species and both of which are females. Cham- 

 berlin (1926) has erroneously placed this species as a synonym of 

 otiosus Say, and a number of his host and distribution records refer 

 to defectus. 



22. AGRILUS GEMINATUS (Say) 



Figure 16 



Buprestis riridis Melsheimer (not Linnaeus), Cat. Ins. Penna.. 1806, p. 46, 



no. 1016 (name preoccupied). 

 Buprestis geminata Say, Journ. Acad. Nat. Sci. Phila., vol. 3, pt. 1, 1823, 



p. 163. — LeConte. Sny's Writings, vol. 2, p. 105 (Bailliere Bros, ed., 



1859; Cassino and Co. ed., 1883). 



