ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 463 



AXIMOGASTRA BAHI^, Sp. nOV. 



(Plate XXXIIL, Fig. 5.) 



Female. — Length 5.5 mm. Yellow, umbilicately punctate ; a large spot on dor- 

 sum of pronotum posteriorly, a stripe on the scutellum, the mesopleura medially, 

 and the metathorax, black. Wings hyaline, the veins yelloAvish. The long, lanceo- 

 late, much compressed abdomen, which is longer than the head and thorax united, 

 is yellow, with some of the dorsal segments marked with black, the last two seg- 

 ments being mostly black. 



Type.— Cat. No. 7342 U. S. N. M. 



Brazil : Bahia. Collected by Mr. Albert Koebele, March 19, 1883. 



PRODECATOMA Ashmead, gen. nov. 



This is another singular genus. In its cephalic and thoracic characters it resem- 

 bles Decatoma Spinola, while in venation and in its abdominal characters it is not 

 unlike Eurytoma Illiger. Both mandibles are three-dentate, the two outer teeth 

 acute, the inner tooth blunt ; the marginal vein is long, slender, the postmarginal 

 being very long, much longer than the marginal, while the stigmal vein, with its 

 knob, is only about half as long as the marginal ; the abdomen is compressed, not 

 or hardly longer than the head and thorax united, usually shorter ; seen from the 

 side it is broadly oval or short ovate, usually pointed at apex, the petiole being 

 slender and either short or long ; the hind tibi?e are fringed with stiff bristles 

 behind as in Decatoma. 



Prodecatoma bruneiventris, sp. nov. 



Female. — Length 3.5 mm. Head and thorax yellow, immaculate, umbilicately 

 punctate ; abdomen brownish ; the flagellum and eyes brown black ; the ocelli are 

 placed nearly in a straight line and are sometimes encircled with black. The first 

 joint of the flagellum is more than thrice as long as thick, the following impercep- 

 tibly shortening to the club. Legs yellow, except the apical half of the hind tibiae 

 which is fuscous. Wings hyaline, the veins light brown. The abdomen is shorty 

 compressed ; seen from the side it is oval and hardly longer than the thorax, acutely 

 pointed at apex. 



Male. — Length 2.1 mm. Yellow, with the upper part of the head, the thorax 

 above and the abdomen, black ; the flagellum is black, the funicle joints long, con- 

 tracted at the middle, each joint with two whorls of long hairs; legs yellow, with 

 the apex of hind femora and the apical two thirds of hind tibise black. 



Brazil : Chapada, in April and August ; Santarem. Four specimens. 



