SCIOMYZA. 355 
Arista bare ; wings with blackish transverse stripes between the 
veins. . ww ee ee ee ee ee ee 
3. Stripes in the first posterior cellonly . . . 2... 2... nana, Fall. 
Stripes in the first posterior cell, and also in the submarginal and 
discal cells . . . . oe soe . . . . + strigata, v. d. Wulp. 
4. Cross-veins slightly infuscated ; front without polished stripes . . squalens, v.d. Wulp. 
Cross-veins not infuscated ; front with three polished stripes . . serena, v.d. Wulp. 
1. Sciomyza infuscata, sp. n.,¢. (Tab. IX. figg. 7,2 ; 7a, head in profile.) 
Cinereous, abdomen black; legs rufous, the fore and middle femora blackish; tip of the wings broadly 
bordered with brown; arista plumose. 
Length 4 millim. 
Front cinereous; frontal bristles long and robust, in three pairs; two shorter postvertical bristles and two 
very minute ocellar bristles ; a small black spot on each side between the antenne and the orbits; face 
and cheeks grey. Antenne black ; the second joint and the base of the third rufous; arista distinctly 
plumose. Proboscis rufous; palpi, at least at the tip, black. Thoracic dorsum and scutellum uniformly 
greyish-cinereous ; a large brown or blackish lateral band starts from the shoulders and is, though much 
more narrowly, prolonged on each side of the scutellum; a second lateral band, grey in colour, extends 
from the shoulders to the base of the wings; pleure rufous, above the middle coxe slightly greyish ; 
metanotum rufous; scutellum with four bristles. Abdomen flattened, shining black. Legs rufous ; 
upperside of the fore femora, save at the tip, black; middle femora with a blackish stripe. Halteres 
rufous. Wings grey; the costa, from the end of the first vein, and the tip, to beneath the fourth vein, 
largely bordered with dark brown; the fifth vein and the posterior cross-vein clouded with brown ; 
small cross-vein a little beyond the end of the first vein and beyond the middle of the discal cell; posterior 
cross-vein straight, separated from the margin of the wing by more than twice the distance that it is from 
the small cross-vein. 
Hab. Mexico, Sierra de las Aguas Escondidas in Guerrero 7000 feet (H. H. Smith). 
A single female specimen. 
2. Sciomyza nana. (Tab. IX. fig. 8, wing.) 
Sciomyza nana, Fall. Sciomyz. Suec. p. 15. 12*; Meig. Syst. Beschr. vi. p. 18.197; Macq. Hist. 
Nat. Ins., Dipt. ii. p. 408. 14°; Zett. Dipt. Scandin. v. p. 2109. 18*; Schiner, Faun. Austr., 
Dipt. ii. p. 49°; Loew, Monogr. Dipt. N. Am. i. p. 104. 1°. 
Hab. Nortu America °.—MeExtico, Mexico city (H. H. Smith).—Evurops!~®. 
A single female specimen of this very recognizable species has been received from 
Mexico. I give a figure of the wing for comparison with that of the following species. 
™ 
3. Sciomyza strigata, sp.n., 6 2. (Tab. IX. fig. 9, wing.) ~ [epee ter ae 
Cinereous ; wings with blackish transverse stripes between nearly all the veins; arista bare. 
Length 2°5-3 millim. 
Front rufous; ocellar triangle and two lateral stripes slightly grey ; the bristles arising from black points; 
face and cheeks whitish; a black point on each side between the root of the antenne and the orbits. 
Antenne brownish ; arista bare. Proboscis and palpi rufous. Thorax and scutellum cinereous ; thoracic 
dorsum with four brownish lines, the two inner ones approximated and prolonged on to the scutellum, 
the outer lines less conspicuous; a brown lateral stripe extends from the shoulders to the base of the 
wings; pleure grey; the front coxe yellowish, the middle and hind coxe cinereous ; scutellum with four 
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