302 hymenoptera. 



30. Tetralonia Duvaucelii. 



Macrocera Duvaucelii, St. Farg. Hym. ii. 98. 11^. 

 Hab. India (Bengal). 



31. Tetralonia elegans. 



Male. Length 5 lines. — Black, the clypeus, labrum and man- 

 dibles yellow, the latter ferruginous at their apex ; the flagellum, 

 tegulae, nervures of the wings and the apical joints of the tarsi 

 bright ferruginous ; the face and legs have a silvery white pu- 

 bescence ; that on the disk of the thorax pale fulvous ; the wings 

 hyaline, very faintly clouded at their apical margins ; the base of 

 the abdomen has a little pale fulvous pubescence, the three 

 following segments have on their basal margins a fascia of short 

 white pubescence, the third fascia broad, nearly covering the 

 segment, the fifth segment entirely covered ; the apical segment 

 covered on each side with fuscous pubescence ; beneath, the 

 margins of the segments rufo-testaceous and ciliated with white 

 pubescence. 



Hab. India. (Coll. W. W. Saunders, Esq.) 



32. Tetralonia Floralia. 



Male. Length 5 lines. — Black, the face thinly covered with 

 a long griseous pubescence, the labrum having a long beard of pale 

 yellow hairs ; the clypeus yellow, the antennte longer than the 

 body, the joints subarcuate. Thorax, the disk shining, sti'ongly 

 punctured, thinly clothed with pale yellow pubescence, the wings 

 hyahne, the nervures and tegulae rufo-testaceous ; the legs have 

 a dense pale glittering silvery pubescence, the apical joints of 

 the tarsi bright ferruginous. Abdomen ovate, convex, the base 

 coarsely punctured, the apical margins of segments testaceous 

 and having a fringe of pale pubescence ; the base having some 

 long pale hairs, and the entire abdomen a short scale-like pu- 

 bescence. 



Hab. North China (Shanghai). 



33. Tetralonia fasciata. B.M. 



Male. Length 4^ lines. — Black, the clypeus, labrum and tips 

 of the mandibles yellowish- white ; the flagellum fulvous beneath ; 

 the pubescence on the face below the antennae white ; above, as 

 well as on the disk of the thorax, it is pale fulvous, and on the 

 cheeks and thorax beneath griseous ; the wings fulvo-hyaline, the 

 nervures ferruginous, the tegulae testaceous ; the apical joints of 

 the tarsi ferruginous, the legs have a bright yellowish-white pu- 



