THE CANADIAN ENTOMOLOGIST 315 



1888. — ?Epiphragma satsuma Bergroth, Ent. Tidskrift, p. 138. 



1902. — Limnobia satsuma Kertesz, Cat. Dipt., Vol. 2, p. 177. 



Male — Length 22.6 mm.; wing 16.8 mm.; hind leg, femur 

 14.1 mm.; tibia 12.2 mm. 



Male — Rostrum and palpi brown, the apical segment of the 

 latter darker; antennae, segments one and two dark brown, fiagel- 

 lum yellow except the two last segments which are brown; front 

 dark brown, vertex and occiput reddish brown, a narrow median 

 streak continued back from the front. 



Pronotum with the scutum dark brown, scutellum yellowish. 

 Mesonotal praescutum rich reddish brown, the lateral margins of 

 the sclerite more greyish, a darker brown median triangle, broad- 

 est in front, narrowed to a point at the suture, lateral stripes 

 similar in colour to the median stripe; scutum, lobes dark brown, 

 median line yellowish, dark brown on caudal portion; scutellum 

 and postnotum dark brown. Pleurae light brownish yellow; 

 propleurffi and dorsal portions of the mesopleura up to the wing; 

 root dark brown; mesostigma very large, conspicuous, situated 

 just behind and under the pronotal scutellum. Halteres short, 

 stem yellow, knob brown. Legs: 'coxae light yellow; trochanters 

 reddish yellow; femora yellow, tip brown, with a still darker 

 subapical ring; tibiae slightly darkened at the extreme base, a 

 whitish sub-basal annulus, tip narrowly dark brown: tarsi brown- 

 ish yellow, tips of the segments darker; legs conspicuously hairy. 

 Wings (see fig. 4, pi. TIL): cephalic third deep yellow, caudal 

 portions yellowish grey; surface with conspicuous brown marks: 

 a large blotch at base of M ; at origin of Rs; at the cord; a narrow 

 ^eam to cross-vein r; paler crown margins to Cu and the veins in 

 the vicinity of cell 1st M2 (discal). Venation (See fig. 4). 



Abdomen : tergites rich yellow, extreme apical margin of the 

 sclerites darker; a brown lateral line; sternites lighter yellow, 

 apices, especially of the terminal segments, darker. Hypopygium 

 (See fig. 11, plate X.): viewed from beneath, 9th sternite with 

 caudal margin straight, the sides oblique; pleurae very short, 

 stout; dorsal apical appendage directed inward, cylindrical, 

 chitinized, its tip with a sharp recurved hook; ventral apical 

 appendages, two, the outermost chitinized, broad at base, rapidly 

 tapering to a sharp point, directed inward, the lower appendage 



