10 TENTHltEDINID^. 



in T. lucorum, with reddish-brown nervures ; stigma blackish ; hind 

 margin dusky and well defined. 



Hab. Northern and Central Europe. 



a-n. <$ 2 • 



Britain 



J. F. Stephens 



o,p. <j>. 



Britain. 





9, r. S ■ 



Coombe Wood. 





s. 2 • (Type of species.) 



Coombe "Wood. 



W. E. Leach. 



t-aa. cS 2 • 



Perthshire. 



Mr. Foxcroft. 



bb. 2- 



Europe. 





4. Trichiosoma vitellina. 



Tenthredo vitellina, Linn. Faun. Suec. p. 389 (1761). 



Trichiosoma laterale, Leach, Zool. Misc. iii. p. 109 (1817) ; Curt. Brit. 



Ent. i. pi. xlix. (1824). 

 Cimbex vitelline, Zadd. Schrift. Konigsb. iii. p. 259 (1862). 

 Oimbex lateralis, Vollenh. Tijdsch. Ent. vi. p. 65, pi. iv. (1863). 

 Trichiosoma salicis, Hart. Stett. ent. Zeit. i. p. 19 (1840). 

 Cimbex villosus, Motsch. Bull. Mosc. xxxix. p. 499 (1859). 



Hah. Northern and Central Europe, North Asia, Western 

 America. 



a-f. S 2 • Britain. J. F. Stephens. 



g. S • (Type of T. laterale.) Darenth Wood. W. E. Leach. 



h. 2 • Devonshire. J. F. Stephens. 



*, k. S 2 • Versailles. 



l-n. 2 • Germany. Herr J. F. Ruthe. 



o. $ . Europe ? 



p. c? • Vancouver's Island. Dr. Lyall. 



q. 2 • Rocky Mountains. Entomological Club. 



5. Trichiosoma arcticum. 



(Plate I. fig. 7.) 



? Trichiosoma lucorum, Kirb. Faun. Bor.-Amer., Ins. iv. p. 255 (1837). 



Exp. al. 1 poll. 3 lin., long. corp. 8 lin. 



Allied to T. lucorum ; differs from T. tri unguium in the shorter, 

 broader, and more obtuse abdomen. Black, with a slight purplish 

 tinge ; head, thorax, base of abdomen, and femora clothed with long 

 grey hairs ; abdomen above with a short erect grey pile. Antennas 

 wanting; mandibles and last segment of the abdomen beneath 

 reddish ; femora and extreme base of the tibiae blue-black ; tibiae 

 and tarsi rufo-testaceous. Wings rather short, smoky yellow ; the 

 tip of the fore wings very slightly clouded, nervures yellowish or 

 mahogany-brown. 



Hah. Arctic America. 



a. $ . (Tvpe of species.) Fort Simpson, Mackenzie Sir J. Richardson. 

 River, 62° N. lat. 



