THE CANADIAN ENTOMOLOGIST. 01 



lateral borders, and a complete arched band inthe middle of the segment 

 to a very narrow anterior band, sometimes interrupted in the middle, and 

 not including all of the lateral margins, and an indistinct middle spot with 

 a very slender, elongate spot at each side of it. On this segment the 

 yellow posterior margin may be entirely separated from the anterior band, 

 but usually they are confluent at the corners. Fifth segment with an 

 anterior black band, expanded to include more or less of the lateral 

 margins, and a black spot like an inverted V or Y. Often this spot is 

 obsolete, leaving only three small spots to form the outline of a V. Legs 

 yellow. All the coxae, and trochanters, and a distinct shining spot at the 

 base of each of the four anterior femora, black. Posterior tarsi tinged 

 with reddish. Wings very distinctly brownish (less so in the female) on 

 anterior third. 

 C. pubescens, Loew. 



Very much like derivatum, but differing in having the legs entirely 

 yellow, the abdomen everywhere covered with erect yellowish pile, and 

 the median thoracic stripes distinct. The wings are much less distinctly 

 marked with yellow. Second joint of antennae longer than first ; third 

 joint in female about equal to the first two ; in the male it is slightly 

 longer. Abdomen marked like that of derivatttm, except that the pos- 

 terior margin of the second is always yellow, and the anterior corners of 

 segments three and four are reddish. The black mark on the fifth 

 segment is like an inverted V or Y ; or the branches may be arcuate. 

 Psilota buccata, Macquart [Dipt. Exot. II., 2, 107, pi. xviii, fig. 2]. 



The history of this species and its attribution to the United States is 

 as follows : It was described by Macquart, in the Memoirs of the Society 

 of Arts and Sciences of Lille in 1841, and the locality given as "Carolina." 

 It was here placed in the genus Pipiza. In the fifth supplement to the 

 Dipt. Exot., which was published in 1855, Macquart describes a species, 

 flavidipeimis, for the first time under the genus Psilota, which was 

 founded by Meigen, in his Syst. Beschr, III, 256, in 1822, several years 

 before the other species, buccaia, was described under the genus Pipiza. 



In 1862 Dr. Loew, in the Monographs of the Dipt, of N. A., I, 27, 

 in mentioning the various genera of Syrphidce that have been recorded 

 from North America, states that Macquart has recorded a Psilota from 

 North America, but that, as that genus had been misunderstood by most 

 authors, he would not venture to mention it among those truly represented 

 in N, A. The reference mentioned above was undoubtedly his authority 

 for this statement. 



