302 _ Miss G. Ricardo on the Pangoninee 
(and do not belong to C. sordidus, O. S.), with the excep- 
tion of his type C. niger (nee Macq.), which belongs to 
C. carbonarius, Wik. 
Chrysops furcatus, 2, Walker, List Dipt. pt. 1. p. 199 
(1848) ; Osten Sacken, Mem. Boston Soc. Nat. Hist. 
11, p. 891 (1876) ; id. Cat. (1878). 
Type (female) from Hudson Bay District, Albany River, 
St. Martin’s Falls, 44. 17 (not 47. 14) (Barnston). This 
species is not identical with C. striatus, Osten Sacken, as 
this author suggests, and I cannot find any other description 
of a North-American species similar to it, so that for the 
present at least it must stand as a distinct species. It 
differs from C. striatus in having the scutellum black, the 
second basal cell infuscated at the base, and the hyaline 
triangle reaching beyond the second longitudinal vein; it 
would follow striatus in Osten Sacken’s synoptical list 
thus : 
Crsremn ridin yeaolkyr Wek 2565 66s50b0000020508 Sureatus, W1k.” 
Walker’s description may hold good with these further 
particulars :—Wings with the first basal cell infuscated 
half its length, the second only at its base; the band 
does not reach the posterior border, the fourth posterior cell 
being hyaline in its apical half, and the fifth at its base and 
apex ; the apical spot hardly reaches beyond the first sub- 
marginal cell, the hyaline triangle extends beyond it, but 
does not attain the costa. 
Chrysops merens, 3, Walker, List Dipt. 1. p. 201 (1848). 
Chrysops estuans, 2, Wulp, Tijd. Ent. x. p. 155, pl. iii. figs. 8, 9 (1867) ; 
Osten Sacken, Mem. Boston Soc. Nat. Hist. i. p. 378 (1876); Cat. 
(1878); Williston, Trans. Kans. Acad. x. p. 182 (1887). 
Walker’s type from Nova Scotia (Redman) answers per- 
fectly to the description of Wulp’s species, as pointed out by 
Osten Sacken ; Walker’s name must therefore take priority. 
Chrysops cincticornis, ?, Walker, List Dipt. pt. i. p. 201 
(1848). 
? Chrysops celer, Osten Sacken, Mem. Boston Soe. Nat. Hist. ii. p. 876 
(1876). 
Described by Walker from an unknown locality. It is no 
doubt a North-American species, from its general likeness to 
those of that continent, and I believe it to be a dark and 
