of the Family 'Tabanide. 305 
infuseated half their length; the first antennal joint is in- 
crassated in both sexes. 
It seems very probable that scalaratus is a synonym of 
lateralis, Wiedem.; but, as Bellardi figured his species and 
Wiedemann’s description is inadequate, I have followed 
Bellardi. 
Chrysops mitis, 2, Osten Sacken, Mem. Boston Soc. Nat. 
Hist. ii. p. 3874 (1876); id. Cat. (1878) ; Williston, 
Trans. Kans. Acad. x. p. 132 (1887). 
One male and one female from Calgary, N.W.T. Canada, 
1894, 1901.65 (Ricardo). 
Chrysops sordidus, 2? , Osten Sacken, Mem. Boston Soc. Nat. 
Hist. ii. p. 376 (1876) ; id. Cat. (1878) ; Williston, 
Trans. Kans. Acad. x. pp. 131, 184 (1887). 
Two females from Nova Scotia (Redman) ; one female 
from Nova Scotia. 
Walker’s C. niger is not the same as this species, as sur- 
mised by Osten Sacken, but is a specimen of C. carbonarius, 
Wik. ‘The specimen from Nova Scotia was wrongly placed 
under C. carbonarius, var. y, Walker, and the two collected 
by Redman were placed under C. m@rens, W1k. 
Chrysops celer, 9, Osten Sacken, Mem. Boston Soc. Nat. 
Hist. 11. p. 876 (1876) ; id. Cat. (1878). 
One female from Nova Scotia (Piffard). It was wrongly 
placed under C. carbonarius, Walker. 
Chrysops frigidus, Osten Sacken, Mem. Boston Soc. Nat. 
Hist. ii. pp. 384, 474 (1876) ; id. Cat. (1878). 
One female from N. America, 81.117 (Lord Walsingham). 
Chrysops morosus, ? , Osten Sacken, Mem. Boston Soc. Nat. 
Hist. ii. pp 389, 474 (1876) ; id. Cat. (1878). 
? Chrysops trinotatus, Macq., Dipt. Exot. i. p. 161 (1838) ; Walker, List 
Dipt. pt. v. Suppl. 1, p. 282 (1854). 
é 40 : 
One female from N. America, ae (Childers), was placed 
under C. fuliginosus, Wiedem. ? One female from Georgia 
(Abbot) is probably a specimen of this species; it was 
wrongly placed under C. plangens, Wiedem. 
