460 MEMOIRS OF THE CARNEGIE MUSEUM 



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

 tegulse, trochanters, knees, tibiae and tarsi, honey-yellow; the tibite 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. 



Male. — Lengtli 3-4 mm. Black, with the second joint of the trochanters, the 

 front tibite, usually entirely, the tips of middle and hind tibial, and all tarsi, honey- 

 yellow. The flagellum iti 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 i)v carina. 



Brazil : Chapada, in April ; Corumba ; Santarem. 



Described from two female and five male specimens. 



AXIMOPSIS Ashnaead, gen. nov. 



Allied to A.vima Walker, but easily separated by the different venation and Ijy 

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

 than it is in Ajrhna, 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. 



AxiMOP.sis MORio, sp. nov. 

 (Plate XXXII., Fig. 6.) 



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

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

 tegulse 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 Aj:wia, only not so transverse, the malar 

 space Ijeing larger. 



Tribe II. hosmnini. 



Genus IS080MODES Ashniead. 



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 tegulse, the trochanters, the tiljiu' and the tarsi, lu)ne3'- 



