100. TENTHREDOPSIS. 285 



Exp. al. 8 lin., long. corp. 5 lin. 



Black ; mouth white ; clypeus sometimes marked with black, 

 orbits and scutellar spots yellow, tegulae pitchy ; abdomen black 

 above, with three or four of the middle segments red, more or less 

 broadly marked with black in the middle ; undersurface and legs 

 red ; tip of abdomen black, hind femora dark brown. 



The male varies in the amount of paler colouring on the abdomen, 

 but nearly always has the extremity black beneath. 



Hah. Europe. 



a-n. S 2 • (Types.) 

 °j P' c?- (As T. spreta.) 



Britain. 



J. F. Stephens. 



Britain. 



J. F. Stephens. 



q-t. S2. 



Germany. 



J. F. Ruthe. 



u,v. 2 • 



Munich. 



H. Buchecker. 



22. Tenthredopsis fuscicornis. 



Tenthredo fuscicornis, Esch. Entomogr. p. 90 (1862). 

 Hah. Kamtchatka. 



23. Tenthredopsis irritans. 

 (Plate X. fig. 11.) 



Macrophya irritans, Smith, Trans. Ent. Soc. Lond. 1874, p. 380. 



Exp. aL 12 lin., long. corp. 6 lin. 



Head and thorax black : antennse, collar, tegulse, and cenchri 

 reddish yellow, anterior margin of the clypeus and lower parts of 

 the mouth whitish ; legs whitish (except the base of the hind coxse, 

 which is black), the hinder legs shading into reddish yellow, and 

 the upper part of the hind femora into blackish. Abdomen shining 

 reddish yellow ; segments 3-7 marked with two dusky spots on 

 the back, which grow larger and darker on each succeeding segment, 

 those on segment 7 being nearly black, and extending almost over 

 the upper surface : abdomen paler beneath. Wings hyaline, irides- 

 cent, with brownish-yellow nervures ; costa and stigma yellowish. 



Hab. Japan. 

 a. <$ . (Type.) North Japan. R. Fortune. 



24. Tenthredopsis nigropectus. 

 (Plate XI. fig. 1.) 



Exp. al. 1 poll. 1 lin., long. corp. 6 lin. 



Head, thorax, and pectus deep black; antennas ferruginous; 

 clypeus, labrum, a broad stripe behind the eyes, tapering to a point 

 towards the base of the mandibles, and a very narrow thread on 

 the inside yellowish; scapulae and tegulae yellow, the former thro wing- 

 off two small projections on each shoulder in the form of a horse- 



