No. 64] DIPTERA OF ( ON N IXTICI T : TAXONOMY 443 



R. {Sacaridaga) caudata (I^undb.) 



1898. Goniomyia {Ewpcda) cdudata LuMdhefk; Videiisk. Meddel. 



fra den iiatuih. Foroii.. Copenhagen, 1898:'J()7. pi. 0, tig.' 18 



(wing). 



Fig.— Alexander, Cfls. N. Y., 1, pi. 36, fig. %• (,vving) ; 1919. 



Greenland, Baff inland. (Arctic). 



R. {Sacandaga) flava (Alex.) 



lull. Sacandaga jlava Alexander; Ent. Xews. '1-1: '^'A-'iWl. 



Figs.— Alexander, Ibid., 22:349. fig. 1 (head): 350, fig. 2 (tarsus): 352. fig. 

 3 (wing) ; 1911. Alexander, Cfls. X. Y., 1, pi. 36, fig. 97 (ven.) ; 1919. 



Pleura variegated with reddi.sh brown. Halteres and legs yellow. 

 Wings iridescent, i. L. r)..")-6 nun. ; w. G..")-? mm. 9. L. 6-6.5 mm. : 

 w. 6.5-7 mm. 



(June, July) Que., N. S., N. H., Vt., Mass., Ct., X. Y., southw. to Tcnn. 



Connecticut.— W. Granby, June 8, 1929 (G. C.C.). 



R. {Sacaiidaga) hudsonica Alex. 



1933. RhabdoDUistlr (Sacandar/a) hudsonica Alexaiuk'!-; .lourn. X. \. 

 Ent. Soc, 41 : 92-93. 



Center of vertex, three praescutal stripes, centers of scutal lobes, 

 posterior two-thirds of mediotergite and conspicuous areas on pleura 

 gravish brown. Antennae black; scape yellow. Tips of femora and 

 tibiae, and all tarsi, brownish black. Wings subhyalinej_ veins brown, 

 conspicuous. S. L. 6-7 nun.; w. 7.5-8.5 mm. $. L. 7 mm.: w. 8..) 

 mm. 

 (June). Que.-N. Gaspe. (Hudsonian). 



R. {Sacandaga) subarctica Alex. (Fig. 47. M). 

 1933. Rhrdjdoma.s-ti.i' {Sacaiulaqa) suharctica Alexantler: Journ. >. l . 

 Ent. Soc, 41 : 91-9-2. 



9 . L. 4.5-5 mm. ; w. 5-5.5 mm. 



(June) Que.-N. Gaspe. (Hudsonian). 



Symplecta Meigcn 



1825. IleloUa St. Fargeau; Encycl. Method.. Ins.. 10: 5.s5 ([)reocc.). 

 1830. Symplecta Meigen; Syst. Beschr. Zweitl. Ins.. 6: 282. 



\ small "-roup containin<r only seven species, of which one. hyhnda 

 Mei<^en, hasli vast range throughout Eurasia, while a second, cana 

 Waller is similarly very wide-spread throughout North America, as 

 far south as the mountains of Central America. Ihe adult Hies ap- 

 pear verv early in the Spring, frequenting vegetation "^'^i; ^^jt^^ ]he 

 uimature sta'^es are to l>e found in saturated earth Edwaidh has 

 ""nth- )la<^d the present group as a subgenus of ^;7^(-- -'^J.^- 

 appears to be its proper arrangement. It may be noted tha a^ lai a^ 

 known there is but a' single species m North America and this should 



