8 TENTHREDINIDvE. 



21. Cimbex hudsonica. 

 (Plate I. fig. 4.) 



Exp. al. 1 poll. 3 lin., long. corp. 7 lin. 



Head and thorax black above and below ; prothorax very pale 

 yellow ; coxae bluish black ; jaws and femora reddish brown. 

 Antennae, tibiae, and tarsi luteous. Abdomen with the first two 

 segments black above, the second edged behind with chestnut ; the 

 succeeding segments chestnut in the middle ; the last two and the 

 imder surface almost entirely chestnut. Segments 3 to 6 with a 

 black spot on the edge of the chestnut colouring, expanded on 

 segments 4 and 5 into two long triangles, which almost meet on 

 the back; the sides of these four segments are straw-coloured. 

 Wings as in C. violacea, hyaline, yellowish towards the base, and 

 dusky at the tips ; the oblique shade running from the stigma across 

 the median cell of the fore wings unusually well defined. 



Not unlike a TricMosoma in size and general appearance, though 

 it has the antennae of Cimbex. 



Hab. Hudson's Bay. 

 a. §. (Type of species.) St. Martin's Falls. Dr. Bamston. 



22. Cimbex macleayi. 



Cimbex macleayi, Leach, Zool. Misc. iii. p. L03, no. L' (1817). 

 Hab. Haiti. 



23. Cimbex klugii. 

 Cimbex klugii, Leach, Zool. Misc. iii. p. 105, no. G (1817). 

 Hab. Haiti. 



24. Cimbex venusta. 



Cimbex venusta, Periy, Del, Anim. Art. p. li'lt. pi. xxvi. fie. 2 

 (1830-34). l 



Hab. Hinas Gerac- . 



2. TRICHIOSOMA. 



Trichiosoma, Leach, Zool. Misc. iii. p. 108 (1817). 



1. Trichiosoma lucorum. 



Tenthredo lucorum, Linn. Syst. Nat. i. p. 555, n. 4 i I /58 i : Faun 

 Suec. p. 389 (1761). 



* It has been suggested that this species is only C. Infra with a wrong 

 Locality ; but il the figure is correct, the wings are smaller a^c! of a diffi 

 shape. 



