1865.] 40!) 



•anterior femora behind and at base beneath, and the two posterior pair 

 except tips beneath, black; tarsi tinged with brownish. Abdomen 

 with the bands and spots either white, yellowish-white or pale green- 

 ish-white ; basal segment with a broad band, deeply and squarely einar- 

 ginate on the middle anteriorly, this band is interrupted in the middle 

 by a very narrow line ; sometimes the emargiuation is cut entirely 

 through the band, leaving a large mark on each side of the segment, 

 and two small approximate spots on the middle posteriorly, and in one 

 specimen these two spots are wanting, leaving only the large lateral 

 marks; second, third, fourth and fifth segments with a broad continu- 

 ous band across the middle, each band with a more or less deep emar- 

 gination on each side of the middle anteriorly, sometimes the band on 

 the fifth segment is broken into three spots; sixth segment with a sub- 

 cordate spot at tip ; venter with a spot on the sides of the second and 

 three following segments; in more developed specimens these spots are 

 dilated and connected by a narrow line across the apical margin of the 

 segments, and the apical segment has sometimes a spot at tip. Length 

 7 — 82 lines; expanse of wings 11} — 13V lines. 



Male. — Resembles the female, but smaller, with a band on the sixth 

 segment similar to that on the fifth ; in one specimen the markings are 

 much less developed, the prothorax being immaculate, the tubercles 

 black, the first segment of abdomen with only an oblique line on each 

 side, the sixth segment with only a central spot and the apical segment 

 narrowly margined behind with yellowish-white; the anus has three 

 spines, two lateral and one apical, and a stout tooth on the disk of the 

 last ventral segment. Length 61 lines; expanse of wings 9i lines. 



Ten 9 j two £ specimens. Some females are more robust than others, 

 and the abdomen is sometimes broad-ovate, and sometimes oblonsr. 

 The markings also vary much, being more developed in some speci- 

 mens than in others. 



2. Monedula obliqua, n. sp. 



Black; orbits, clypeus, labruru, mandibles, basal half of antennae beneath, 

 line on prothorax, tubercles, two spots on scutellum, line on postscutellum. 

 two oblique marks and two small central spots on basal segment of abdomen, 

 and narrow undulate bands on remaining segments, whitish; legs except fe- 

 mora, yellow; wings dusky hyaline. 



Female. — Deep black, opaque, thinly clothed with whitish pubes- 

 cence, somewhat yellowish on the vertex; frontal orbits abbreviated 

 above, narrow interrupted or subinterrupted posterior orbits, spot be- 

 tween antennae, clypeus, labrum, and the mandibles except tips, pale 

 yellowish-white ; labrum with a shallow depression on the middle at 



