of the Famihj T;ibaiu<l;L'. i>.j7 



otiier {]fcncra. His D. innroccuans, (^ (^^em. Soc. Zool. Fr. 

 V. p. G'i.'i, 1892), from Morocco, is a male spr'cies of Silvias, 

 but I am uot al)lo to identify it with any description of a 

 Silvius from the Pahearctic Region, many of the males of the 

 described species being not yet known ; the eyes are hairy in 

 this specimen, and the face and tlie second joint of the an- 

 tcniiee moderately pubescent : his D. barbatiis, ^ {/. c. p. 22), 

 from Piedmont, is also a male species of Silvius with the 

 face and the first two joints of the antennae densely pubes- 

 cent ; the eyes arc bare : his D. Jucmatopotides, ? (/. c. p. G24-), 

 from N. America, is a specimen of Tuhanus frutellas, Will. : 

 his D. me/as, ? (/. c. p. 625), from Sidney, is a specimen of 

 Ajiocampta subcanus, Wlk. (see Ric. Ann. & Mag. Nat. Hist. 

 (7) viii. 1901, p. 287) : his D. notatus, ? (/. c. p. G22), from 

 California, is a species of Silvius apparently identical with 

 Silvius qund^'ivittatits, ? , Say, Journ. Acad. Phil. iii. p. 33 

 (1823) ; id. Compl. \Vr. ii. p. 54 (1859) ; Wiedem., Auss. 

 zweifl. Ins. i. p. 200 (1828) (Chrysops) ; Osten Sacken, Cat. 

 Dipt. N. Amer. p. 22G (1878); Will. Trans. Kans. Acad. 

 Sci. X. p. 131 (1888). 



Williston distinguishes his sj)ecies .S'. puUinosus from Say's 

 species by the absence of blacki?h stripes on the thora.K ; 

 these are present in Bigot's specimen. Williston suggests 

 that these two species may belong to the genus Neinorius. 

 Bigot's specimen certainly bears a strong general resem- 

 blance to Clinjsops {Nemorias) vitripennis, Mg., though the 

 first joint is considerably longer in C. vitripennis, as Williston 

 remarks. 



The latter author describes a species as Dichelacera scutel- 

 lata from Brazil, but suggests it may belong to the genus 

 Diachlorns, though the fore tibiie, not being curved, seem to 

 exclude it from this genus, and the absence of a tooth on 

 the third joint of the antennre from Dichelacera. If it 

 should be finally placed under Diachlorus, the name will have 

 to be changed, being already used for a species described by 

 Macquart. 



Diachlorus varipes, Rondani, is said by the author to be 

 nearly related to D. atceniu, Macq., which is a synonym of 

 D.ferru(/uta, F. 



Tiie species named by Walker Diachlorus varius, ^ , belongs 

 to the Fangoninae, having ocelli, and spurs on hind tibine ; 

 the antenme being lost, it is impossible to identify it further, 

 but it probably belongs to the subgenus Difitomineura aiul 

 comes from Chili. In List Dipt. pt. v. Suppl. 1, p. 2G9, 

 AValker notes that the fore tibiic are straight and slender, 

 thus (lillering from other species of the genus. 



