356 HYMENOPTERA. 



12. Nysson? MARGINATUS. 



Nysson marginatus. Spin. Ann. Soc. Ent. Fr. x. 113. 68. t. 3. 

 f. 11 (1841). 



Hab. Cayenne. 



13. Nysson rufo-pictus. B.M. 



Female. Length 4 lines. — Head and thorax black ; the cly- 

 peus, mandibles, scape, and five or six of the basal joints of the 

 flagellum, ferruginous. Thorax : the collar, tubercles, a large 

 spot beneath the wings, the tegulse and posterior angles of the 

 mesothorax, the scutellum, post-scutellum, and tips of the spines 

 which arm the metathorax and the legs, ferruginous ; the lateral 

 angles of the metathorax covered with silvery pubescence. 

 Abdomen ferruginous ; the basal margin -of each segment has a 

 central triangular black spot, the entire margin of one or two of 

 the basal segments is also narrowly black, viith angular black 

 spots at the sides ; beneath, the third, fourth and fifth segments 

 are black. 



Hab. ? 



14. Nysson aurinotus. 



Nysson aurinotus. Say, Bost. Journ. i. 368. 

 Hab. N. America (Indiana). 



15. Nysson Gayi. 



Nysson Gayi, Spin. Gay's Chili, \i. 347. 1- 

 Hab. Chili. 



Genus 5. SERICOPHORUS. 



Sericophorus {Shuck. MSS.), Smith, Ann. Sf Mag. Nat. Hist. 



2nd ser. vii. 32 (1851). 

 Tachyrrhostus, Sauss. Mem. Soc. Phys. Geneve, fasc. 1. 24(1854). 



1. Sericophorus chalybeus. PI. IX. fig. 1. B.M. 



Sericophorus chalybeus, Ann. ^ Mag. Nat. Hist. 2nd ser. vii. 32. 

 Tachyrrhostus cyaneus, Sauss. Mem. Soc. Phys. Geneve, fasc. 1. 

 26. 14. 



Hab. Australia. 



2. Sericophorus viridis. 



Tachyrrhostus viridis, Sauss.Mem.Soc.Phys. Geneve, fasc. 1 . 25. 13. 

 Hab. Australia. 



