18G5.] 207 



1. Agathis nigripes. n. sp. 



Yellowish-rufous ; head, antenna?, tegulse, breast, disk of metathorax and 

 legs, black; wings fuscous; metathorax without impressed lines; basal seg- 

 ment of abdomen convex, incisure between first and second segments deeply 

 excavated on each side; ovipositor longer than the body. 



Female. — Colored exactly like A. atripes, except that the anterior 

 femora are yellowish at tips ; the mesothorax is convex, without any 

 trace of impressed lines, and sometimes has a black mark in front; the 

 metathorax is sculptured the same and is sometimes entirely black ; 

 the wings are paler, being uniformly fuscous, the areolet is small and 

 triangular ; the basal segment of the abdomen is convex except at the 

 extreme base where it is rather deeply excavated and carinated on each 

 side ; the incisure between the first and second segments has a deep 

 fovea on each side, the latter segment has two transverse impressed 

 lines as in atripes but less distinct; the third and following segments 

 are convex, smooth and polished; the apex is rounded; the ovipositor 

 is longer than the body, ferruginous, the valves black. Length 2-] 

 lines ; expanse of wings 5 lines. 



Three specimens. 



Genus MICRODUS, Nees. 

 1. Microdus fulvescens, n. sp. 



Honey-yellow, abdomen orange-yellow; antenna?, tips of mandibles, and four 

 anterior trochanters, black ; wings uniform fuliginous, with a large hyaline 

 spot beneath the stigma ; ovipositor scarcely exserted. 



Female. — Uniform pale honey-yellow, shining, finely pubescent; 

 head slightly broader than the thorax; clypeus prominent, broadly 

 rounded in front, with a deep fovea on each side at base; middle of 

 the face rather prominent and obsoletely aciculate ; mandibles project- 

 ing, subacute, fringed with long pubescence and black at tips; labrum 

 exserted, subquadrate, filling up the space between the clypeus and 

 mandibles; palpi dusky, annulated with pale testaceous; antenna3 nearly 

 as long as the body, brown-black, the basal joint robust and shining 

 black. Thorax polished, sparsely and indistinctly punctured ; meso- 

 thorax tribolate, the middle lobe slightly grooved, and behind it a very 

 deep, subtriangular excavation ; prothorax smooth and polished; pleura 

 with an oblique excavated line on each side ; the excavation in front of 

 the scutellum deep and crenulated ; metathorax rugose ; tegulse honey- 

 yellow. Wings ample, uniform fuliginous, with a large hyaline patch 

 beneath the stigma ; nervures black ; areolet minute, subtriangular and 

 petiolated. Legs color of the body, punctured, slightly pubescent; the 

 four anterior trochanters and tips of their tarsi, the posterior trochan- 

 ters at tip above, and tips of their tibia) and most of their tarsi, black 



