460 MEMOIES OF THE CARNEGIE MUSEUM 



sides of the fifth and sixth abdominal segments, more or less, red ; scape at base, 

 tegulse, trochanters, knees, tibise and tarsi, honey-yellow ; the tibise are sometimes 

 dusky except at tips. Wings hyaline, the veins brown. 



The frontal spines are very minute, nearly obsolete, only represented by a carina 

 close to the eye. 



3Iale. — Length 3-4 mm. Black, with the second joint of the trochanters, the 

 front tibiee, usually entirely, the tips of middle and hind tibiae, and all tarsi, honey- 

 yellow. The flagellum in this sex is very long, extending to the apex of the ab- 

 dominal petiole, the joints of the flagellum long, contracted at the middle, each 

 joint of the funicle with two whorls of long hairs. The apex of the metathorax has 

 a quadrate area just above the insertion of the petiole while the petiole is very long, 

 narrowed towards apex, shagreened, and with some longitudinal ridges or carinse. 



Brazil :- Chapada, in April ; Corumba ; Santarem. 



Described from two female and five male specimens. 



AXIMOPSIS Ashmead, gen. nov. 



Allied to Axima Walker, but easily separated by the different venation and by 

 the totally different shape of the abdomen. The marginal vein is much shorter 

 than it is in Axima, being hardly twice the length of the stigmal vein, while the 

 abdomen is much shorter, never long lanceolate, the relative length of the segments 

 being totally unlike those in Axima, with a much shorter petiole. The head, too, is 

 different, not so acutely horned, the lateral ocelli being nearer to the eye margin than 

 to each other ; in Axima the ocelli are nearer to each other than to the eye margin. 



AxiMOPSis MOEio, sp. nov. 

 (PlateXXXIL, Fig. 6.) 



Female. — Length 4.2 mm. Black ; the sutures between the femora and tibiae, 



the extreme tips of tibiae and the tarsi honey-yellow. Wings hyaline, bare, the 



tegulae black, veins yellowish. The head is wider than the thorax, has a carina 



extending around the inner orbits, another bounded the scrobes and extending to 



the clypeus ; otherwise it is much as in Axima, only not so transverse, the malar 



space being larger. 



Tribe IL Isosomini. 



Genus ISOSOMODES Ashmead. 



ISOSOMODES BRASILIENSIS, Sp. nOV. 



(Plate XXXIII. , Fig. 1.) 



Female. — Length 3.5 mm. Black ; the scape, pedicel, first joint of funicle, ex- 

 cept sometimes at apex, the tegulae, the trochanters, the tibiae and the tarsi, honey- 



