12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 69 



tergites rather strongly projecting ; yellow pile above and below on 

 the abdomen. Length, about 14 mm. One male, three females. 



Type locality. — Illinois. 



Type. — In Cambridge Museum Comparative Zoology. 



Distribution. — Virginia: Fairfax County, June 11, 1922 (H. S. 

 Barber) ; Falls Church, May 28, 1917, reared (C. T. Greene) ; Glen- 

 carlyn. May 21, 1921 (S. A. Rohwer) ; Falls Church, July 4, 1920 

 (S. A. Rohwer). Kansas: Onaga (Crevecoeur). 



CHRYSOTOXUM PLUMBUM Johnson 



Chrysotoxum plumeum Johnson, Occ. Papers Bost. See. Nat. Hist., vol. 5, 



1924, p. 99. 

 Chrysotoxum ventricosum Loew, Cubran, Can. Ent, vol. 56, 1924, p. 39 



( misidentiflcation ) . 



A rather small species characterized by the straight or nearly 

 straight face (in profile) ; antennal joints about 1:1:2; arcuate bands 

 extending to sides of abdomen; second sternite with yellowish hind 

 border, remaining sternites with or without anterior pair of spots. 



Length, 10-12 mm. 



Seventeen males, three females. 



Type locality. — New Jersey. 



Type. — In C. W. Johnson's collection, Boston, Mass. 



Distribution. — New Jersey: Riverton, September 8 (C. W. John- 

 son) ; Caldwell, June 15 (C. W. Johnson). Maryland: Plummer 

 Island, April 25, May 19 (R. C. Shannon) ; Odenton, June (R. C. 

 Shannon); College Park (collector?). Virginia: Great Falls, May 

 9,1920 (H. S. Barber). 



CHRYSOTOXUM PERPLEXUM Johnson 



CJirysotoxum perplexum Johnson, Occ. Papers Bost. Soc. Nat. Hist., vol. 

 5, 1924, p. 99. 



Chrysotoxum laterale Loew, Cukran, Can. Ent., vol. 56, 1924, p. 35 (mis- 

 identification ) . 



A larger species than plumeum distinguished chiefly by its con- 

 cave face (in profile) and relation of antennal joints, 1:5:2. 



Four males, three females. 



Type locality. — New Hampshire. 



Type. — In C. W. Johnson's collection, Boston, Mass. 



Distribution. — New Brunswick : St. John, August 15, 1898 

 ("W. M."). Maine: Locality and collector? Vermont: Bolton, 

 July 15, 1923 (Owen Bryant). New Hampshire: Franconia, July 

 20 (C. H. T. Townsend); White Mountains, July (S. Scudder). 

 New York: Lake George, September 4, 1920 (M. D. Leonard). 

 Pennsylvania: Allegheny, July 9, 1891; Rockville, September 25, 

 1913 (A. B. Champlain). Maryland: Plummer Island, July 25 

 (R. C. Shannon). 



