hymenoptera. 15 



28. Zethus binodis. B.M. 



Vespa binodis, Fahr. Ent. Syst. Supp. 264. 100-1 $ . 



Coqueb. Illustr. Icon. Ins. dec. ii. t. 15. f. 2. 

 Eumenes binodis, Fahr. Syst. Piez. 287. 8. 

 Zethus didymogaster. Spin. Ann. Soc. Ent. Fr. x. 133 (1841). 

 Zethus binodis, Sauss. Mon. Guepes Sol. 20. 23. 



Hab. Cayenne. 



29. Zethus niger. B.M. 

 Zethus niger, Sauss. Mon. Guepes Sol. 21. 24. t. 8. f. 9 <? . 

 Hab. Cayenne. 



30. Zethus arietis. 



Vespa arietis, Fabr. Ent. Syst. ii. 282. 101 <? . 

 Pohstes arietis, Fabr. Syst. Piez. 280. 50. 

 Vespa arietis, Oliv. Encycl. Meth. vi. 6/6. 

 Zethus arietis, Sauss. Mon. Guepes Sol. 14. 11. 



Hab. South America. 



31. Zethus Jurinei. B.M. 

 Zethus Jurinei, Sauss. Mon. Guepes Sol. 15. 13 S . 



Hab. South America ; St. Domingo. 



32. Zethus albopictus. B.M. 



Female. Length 4f lines. — Black : the head subopake and 

 finely rugose ; the scape shining ; the flagellum opake and slightly 

 ferruginous at its apex beneath ; an oblong yellow spot on the 

 lateral margins of the clypeus. The mesothorax slightly shining 

 and covered with fine shallow punctures ; the sides of the thorax 

 and also beneath covered with a fine, short, silky, white pubes- 

 cence ; the anterior margin of the thorax, a spot beneath the 

 wings, two spots on the tegulse, an interrupted line on the pos- 

 terior margin of the scutellum, a minute one on each side of the 

 post-scutellum, and a line on the tibiae outside, white ; the wings 

 fusco-hyaline, with a dark cloud on the anterior margin of the 

 superior pair. Abdomen : the posterior margin of the petiole, 

 a narrow band towards the base of the first segment, another on 

 its apical margin, and a similar band on the apical margin of the 

 third segment, white ; the white band continued beneath on the 

 apical margin of the first segment. 



Hab. St. Domingo. 



