APPENDIX. 



DESCRIPTIONS OF NEW SPECIES 



COMMUNICATED BY 



FRANCIS WALKER, Esq., F.L.S., &c. 



Eurytoma Cestius. Fem. Nigra, gracilis, genubus, tibiis 

 apice tar sis, propedibusque rufis, alis limpidis. Page 100. 



The slender body of this species easily distinguishes it from all 

 other described Eurytomee ; E. atrum comes nearest to it in this 

 respect, but is very different in structure. Black, narrow, linear, 

 convex: head and chest or thorax thickly punctured, not shining: 

 head a little broader than the chest : feelers or antenna? subclavate, 

 slender, shorter than the chest; club spindle-shaped, more than 

 twice the length of the preceding joint: fore-chest or prothorax large ; 

 its breadth slightly exceeding its length: hind-chest or metathorax 

 well developed, obconic, declining, having a large furrow down 

 the middle : petiole short : abdomen spindle-shaped, smooth, shin- 

 ing, keeled beneath, a little longer and narrower than the chest; 

 metapodeon and octoon of moderate size ; ennaton shorter ; deca- 

 ton much longer; protelum, paratelum, and telum of moderate 

 size : legs black ; knees, feet or tarsi, and tips of shanks or tibiae 

 red ; fore-legs nearly all red : wings white ; veins tawny ; ulna 

 rather thick, about one-third of the length of the humerus; ra- 

 dius shorter than the ulna. Length of the body lj line ; of the 

 wings 2 lines. 



Page 100. Eurytoma Mucianus. Mas. Nigra, genubus, tar- 

 sis propedibusque fulvis, alis limpidis. 



It resembles E. platyptera, but is distinguished from that spe- 

 cies by its more nodose feelers. Black, convex : head and chest 

 thickly punctured : feelers black, beset with whorls of hair, piceous 



