HYMENOPTERA. 303 



bescence, on the basal joint of the posterior tarsi within it is 

 fulvous. Abdomen of a dark fuscous, the apical margins of the 

 segments narrowly rufo-testaceous ; the base has a little pale 

 fulvous pubescence, the second and third segments have a fascia 

 of white short scale-like pubescence, the first much attenuated 

 in the middle, the other segments are entirely covered with a 

 similar pubescence. 



Hab. North China (Foo-cho-foo). 



34. Tetralonia tricincta. 



Macrocera tricincta, St. Farg. Hym. ii. 101. 14. 

 Hab. Algeria. 



35. Tetralonia senex. 



Male. Length 4 lines. — Black, entirely covered with snow- 

 white pubescence, the sixth and seventh segments of the abdo- 

 men black, beneath black; the legs black beneath, the pos- 

 terior tarsi entirely so ; the flagellum except the two apical 

 joints nigro-piceous beneath ; the clypeus and mandibles white, 

 the apex of the latter ferruginous, the claws dark ferruginous ; 

 the wings hyaline, the nervures ferruginous, pale towards the base 

 of the wings, the tegulse pale rufo-testaceous. 



Hab. Algeria? (Coll. J. S. Baly, Esq.) 



36. Tetralonia brevicornis. B.M. 



Male. Length 5^ lines. — Black, the pubescence on the head 

 and thorax pale ochraceous, that on the cheeks, sides of the 

 metathorax and on the thorax beneath griseous ; the antennae 

 not longer than the head and thorax, submonihform, fulvous 

 beneath ; the mandibles ferruginous, their tips black ; the wings 

 subhyahne, faintly clouded at their apical margins, the tegulae 

 ferruginous ; the tibiae and tarsi ferruginous. Abdomen fusco- 

 testaceous, sometimes rufo-testaceous, the apical margins being 

 pale ; the whole abdomen has a thinly scattered griseous pubes- 

 cence, that on the margins shghtly fulvous ; beneath, the 

 margins of the segments are of a shining reddish yellow, having 

 a transparent lustre. 



Hab. Australia (Moreton Bay). 



37. Tetralonia terminata. 



Female. Length 5i lines. — Black, the face clothed with 

 cinereous pubescence, the cheeks densely covered with white 

 pubescence, the mandibles yellow towards their apex, their tips 



p 5 



