of New Species of Exotic Hymenoptera. 227 



longiores, nigrae, venis ut in congeneribus dispositis. Pedes 

 breves, nigri, tibiis et tarsis pedum posticorum setis griseis 

 dense vestitis. Abdomen elongato-ovale, glabrum, nitidum, 

 nigrum, lateraliter punctis parvis impressum ; segmento basali 

 laave, reliquis sub lente delicatissime granulatis. 



Genus Stephanus. 



M. Bridle (Hist. Nat. Ins. Hym. iv. p. 536) confines this 

 genus to the European Stephanus serrator of Fabricius, on 

 account of its possessing five joints in the hind tarsi, the fourth 

 being short, oblique, and prolonged beneath the following joint. 

 This structure, however, also exists in the male of the following 

 species. 



Stephanus Brasiliensis, Westw. in Griffith, Animal Kingdom, 

 pi. 66, f. 3, $. 



The figure above referred to correctly represents the hind 

 tarsi as five-jointed. The hind femora are furnished beneath 

 with two strong teeth, having a smaller one between them and 

 several slight serratures. 



Genus Megischus, Bridle, Hist. Nat. Ins. Hym. iv. p. 537. 



This genus consists of such species of Stephanus as possess 

 only three joints in the posterior tarsi, the middle joint being 

 prolonged beneath the terminal joint, and the two posterior fe- 

 mora are armed beneath with a row of small teeth, two of which 

 are larger than the rest, whereas in Stephanus the hind femora 

 are armed with three large teeth, and destitute of the smaller 

 denticulations. I believe, however, that this character is merely 

 a sexual one, and that it is peculiar to the females alone. 



Megischus coronator, Fabricius. Westw. Trans. Ent. Soc. iii. 

 p. 276 (Stephanus cor.) ; Bridle, Hist. Nat. Inst. Hym. iv. 

 p. 538. 



M. Brulle gives, as the habitat of this species, the East Indies, 

 collected by Messieurs Diard and Duvaucel, and New Guinea 

 (Dorey), captured during the expedition of Capt. D'Urville, the 

 specimen from the latter locality having the colour of the wings 

 rather more dusky. 



Q, 2 



