THE CANADIAN ENTOMOLOGIST. 163 



Abdomen, tergites yellow with an indistinct light brown 

 blotch in the middle of each sclerite; lateral sutures darker; sternites 

 yellow; segments 7 to 9 dark brown. Male hypopygium with the 

 9th tergite (see plate XI, fig. 8) from above with the caudal margin 

 concave, with a deep, parallel-sided, median notch, the lateral 

 angles produced into points which are directed caudad the caudal 

 margin with small, black denticulse and points; 9th sternite from 

 below with the caudal margin about straight with a rounded 

 median protuberence. Apical appendages, the outer fleshy lobe 

 rather broad, the point moderately long and rather obtuse; the 

 inner appendage is strongly chitinized, rounded-oval, on the cephal- 

 ic face produced into a long point which is directed forward; 

 below this point, very strongly chitinized and deeply incised. 

 (See plate XI, fig. 16.) 



Holotype, d\ Tokyo, Japan; August, 1912. (Vial 43.) 



Pachyrhina virgata Coquillett. 



1898. — Pachyrhina virgata Coquillett, Proc. U. S. Nat. Mus., 

 vol. 21, p. 306. 



1902.— P. virgata Kertesz, Cat. Dipt., vol. 2, p. 325. 



1910. — P. virgata Riedel, Deutsch. Ent. Zeitschr., p. 435. 



Several specimens of this interesting species were included in 

 the collection. 



Male.— Length 10.8—11.8 mm. ; wing 10.2—12.4 mm.; 

 * antennae 4.6 — 4.9 mm. 



Female. — Length 14.4 mm.; wing 13 mm. 



I give a figure of the sixth antennal segment in plate XI, figure 

 10, and of the wing- venation in plate XI, figure 4. The male hypo- 

 pygium may be described as follows: The 9th tergite from above 

 (plate XI, figure 9) with the caudal margin having a bread rounded 

 median notch into which the tips of the apical pleural appendages 

 fit, the inner edge of the adjacent lobe produced into chitinized 

 lobules which are provided with denticulae; each lobule with a 

 sharp chitinized point on its caudal margin, these points directed 

 caudad. In a small o 71 (Vial 46) the median notch is not so rounded, 

 more oval, the sharp caudal points are longer. Apical appendages, 

 the outer fleshy lobe rather broad and pointed, inner lobe with a 



