96 STRATIOMYID.-E. 



Subfamily XYLOMYIN^. 



Head with eyes separated in both sexex ; face depressed in 

 middle ; palpi elongate and upturned ; antenna! 3rd joint elongate, 

 with eight aimulations and generally a minute apical bristle. 

 Thorax practically bare, subquadrate ; scutelluui unspined. Abdo- 

 men of 7 to 9 segments, elongate, longer than thorax, with nearly 

 parallel sides ; genitalia of J conspicuous. Le(js moderately long 

 and stout, bai-e or nearly so, liind femora often incrassate or 

 spinose below ; posterior tibia? with two spurs. Wings not of 

 the normal Stratioinyid type, all the veins reaching wing-margin, 

 the anterior veins not crowded together ; 2nd vein (prtel'urca) 

 oriiriuatine; some distance before base of discal cell, the latter 

 much more elongate than ni any otlier subtamily ; costal veni 

 complete, ambient vein present for at least some further distance ; 

 3rd vein with an elongate fork, lower brancli ending at about 

 wing-tip ; 4th vein with three terminations ; 4th posterior cell 

 closed near \\ing-border, a special character of this subfamily ; 

 live posterior cells ; posterior cross-vein normally present, but in 

 some species the contact of upper branch of 5th vein with discal 

 cell is practically punctiform, in which case cross-vein absent ; 

 alar squamae very small, thoracic squamse absent. 



The Xylomyinte resemble the Beri>"^jE more than any other sub- 

 family, and the principal distinguishing characters are given under 

 Berin-t:. Further characters of the Xylomyix.e are the depressed 

 face, the much more elongate discal cell, the unspined scutellum, 

 the non-metallic or aeneous nature of the species, and the uudilated 

 metatarsus in the 6 . They are mostly yellow, somewhat Ichneu- 

 mon-\ike iiies, and sparsely pubescent. 



Genus XYLOMYIA, Eoud. 



Xjilomyn, lioudani, Dipt. Ital. Prod, iv, p. 11 (1861). 

 iSubula, Megerle iu Meigen, Syst. Besch. ii, j). 15 (1820). 

 Solva, Walker, Proc. Limi. Soc. Lond. iv, p. 98 (1860). 

 Mucrocerumi/s, Bi^ot, Bull. Soc. Ent. Frauce, (o) vii, p. Ixxiii (187"). 

 Siibulaomijia, Wiilistou, Mau. N. Amer. Dipt. p. 4-3 (1896). 

 Xi/lo)ai/ia, de Meijere, Tijd. v. Ent. i, p. 217 (1907). 



Genotype, Xijlomijia is a uom. uov. for Subula, JMg., of whicli 

 Eondani gave v'aria, Meg. iu Mg., as type. 



Head transverse, as wide as thorax ; froiis flusli with eyes or 

 sliw-htlv depressed ; face distinctly depressed about the middle ; 



Fig. l.-~Xyloiaijiii, anleima. 



eyes bare, well separated in 6 , still more so in $ ; proboscis 

 prominent: palpi 2-jointed, cylindrical, rather long, directed 

 upwards. Anteniise elongate, as long as or longer than head ; lirst 



