466 MEMOIRS OF THE CARNEGIE MUSEUM 



olated, the petiole being as long as the hind femora, tlie body being small, triangu- 

 lar in outline, the third segment being the largest segment. 



Genus SYSTOLODES Ashmead. 

 Systolodes brasiliensis, sp. nov. 



Femak. — Length 1.5 mm. Black, the scape and the legs, except the coxa? and 

 the hind femora, honey-yellow. Wings hyaline, the veins pale yellowish. 



The joints of the funicle are a little longer than thick, the first joint being a 

 little the longest. The abdomen is subglobose, subcompressed, the petiole being 

 slender and as large as the hind coxa?. 



Brazil : Chapada, in April. One specimen. Differs from all other species placed 

 in this genus by the long abdominal petiole. 



Tribe IV. Rihyrni. 



NEORILEYA Ashmead, geu. nov. 



Head transverse, not wider than the thorax at its widest part, the eyes large, 

 broadly oval or subrotund, the malar space very short ; mandibles short, broad, 

 4-dentate ; antennae thirteen-jointed, with two ring-joints, alike in both sexes, the 

 flagellum being stout, filiform, pubescent, stoutest in the female, the pedicel shorter 

 than the first joint of the funicle ; first two joints of the funicle in the male are 

 submoniliform. Thorax robust, the pronotum very large, subquadrate, as wide as 

 the mesonotum or very nearly, the latter being a little the longei-, with the parap- 

 sidal furrows usually vaguely defined, rarely sharply defined or complete ; the met- 

 athorax is extremely short. Abdomen short oval, shorter than the thorax, depressed, 

 wider than deep, subsessile, the petiole very short, the first and third body segments 

 the longest, nearly equal, the second very short, the fourth and the fifth longer than 

 the second, the following more or less retracted. 



In sculpture this genus agrees with Eurytonia, being umbilicutely punctate. 



Neorileya flavipes, sp. nov. 

 (Plate XXXVI., Fig. 2.) 



Female. — Length 2.3-2.6 mm. Robust, black, umbilicately punctate, the ab- 

 domen oval, slightly depressed and delicately shagreened ; scape and legs pale yel- 

 lowish, rarely with the hind femora and tibia? toward apex blackish, or dusky ; 

 flagellum filiform, the funicle joints two to six quadrate. Wings hyaline, the 

 tegula? and veins yellowish or brownish-yellow. The male is usually smaller, with 



