ORTALID.E — 1DI0TYPA. 183 



Gen. VI. EUOUEffA nov. gen. 



Charact. — Front very broad, very little narrowed anteriorly ; the excava- 

 tion of its upper part very shallow ; the ocelli near the vertex and 

 closely approximated to each other. 



Antennal arista with a very short pubescence. 



No mesothoracic bristle, and, as it seems to me, no prothoracic one. 



Scutellum with four bristles ; the lateral ones weak and small. 



Feet: front femora rather strong, with conspicuously long and strong 

 spines ; the four posterior feet remarkably long and slender, their 

 femora with small spines near the tip only, otherwise these femora 

 are thin and very long, especially the intermediate ones. 



Wings: posterior angle of the anal cell obtuse; the small crossvein a 

 little beyond the last third of the discal cell ; opposite this crossvein, 



. the second longitudinal vein emits a little stump of a vein into the 

 submarginal cell ; the last section of the fourth longitudinal vein 

 is nearly parallel to the third. 



The typical species is Michogaster egregius, from Columbia, 

 described by Gerstsecker (Stett. Ent. Z. XXI, p. 1*19). I possess 

 the male only. The ovipositor of the female is called sugar-loaf 

 shaped by the author ; which would indicate that it is less com- 

 pressed than in the other Richardina ; it may be somewhat of 

 the same shape as in Stenomacra Guerini. 



Gen. VII. IDIOTYPA nov. gen. 



Charact. — Front very broad, not narrowed anteriorly; ocelli rather 

 approximated to the edge of the vertex, and placed close to each 

 other. 



Antennal arista with a short pubescence. 



No mesothoracic bristle ; a weak prothoracic one. 



Scutellum with two bristles ; metathorax sloping. 



Abdomen slender and elongated, almost pedunculate at the basis. 



All the femora strong and armed with spines. 



Wings: posterior angle of the anal cell quite obtuse; the small cross- 

 vein beyond the last third of the discal cell ; opposite this crossvein 

 the second vein has a stump of a vein, inside of the submarginal cell, 

 and a second one on the opposite side, in the marginal cell, nearer 

 to the apex of the wing ; the last section of the fourth longitudinal 

 vein almost parallel to the third. 



1. I. appendiculata n. sp. % $ .—(Tab. IX, f. 26.) Ex ochraceo 

 ferruginea, thorace flavo-vario, alarum dimidio anteriore ex ochraceo 

 ferrugiueo, posteriore subhyalino, dilute lutescente. 



