Deutsch. Ent. Zeitsclir. 1911. 131 



A new Thynnid Wasp from Brazil. (Hym.) 



By J. ehester Bradley, Ph. D. Atlanta, Ga. 



Ornepetes silvicola n. sp. 



Male. Entirely coal - black ; shining ; bearing sparse black 

 pubescence. Wings with a strong violaceous reflection , smoky, 

 with still darker clouds along the veins and filling the marginal 

 and submarginal and apical part of the third discoidal cells. 

 Length 15 — 25 mm. 



Head seen from above subquadrate, but the posterior corners 

 rounded. Eyes very large , reaching the mandibles , the interior 

 margins sinuate. Face between the eyes broad, concave, but the 

 niiddle portion elevated. Antennae inserted beneath a ledge or 

 elevation which is flattened above and emarginate in front , fili- 

 form, longer than the head and thorax, thirteen segmented, from 

 the seventh to the twelfth Segments inclusive strongly crenulate, 

 that is to say each of these segments is bowed. The ocelli are 

 small , very much nearer to each other than to the Compound 

 eyes , in a close triangle ; the posterior pair slightly in front of 

 an imaginary line connecting the posterior margin of the Com- 

 pound eyes. Temples wide above, but much narrowed at the base 

 of the Compound eyes. Clypeus produced and deeply emarginate 

 in the middle , so as to appear bidentate. Mandibles slender, 

 bidentate, the apical tooth slender and rather acute. The labial 

 palpi are four segmented , none of the segments elongated , the 

 second and third equal , a little shörter than the others ; the 

 maxillary palpi are six-segmented , the first very short , scarcely 

 longer than wide , the second between two and three times as 

 long , the third equal to the second , the fourth fully twice as 

 long as the third ; the fifth about the same as the fourth , the 

 sixth a little shorter ; the apical three segments are somewhat 

 more slender than the basal three. The temples and face are 

 finely punctured, the front more coarsely but not closely ; above 

 the ocelli on the Vertex the punctuation becomes finer and sub- 

 obsolete. 



Pronotum with a vertical slightly concaved smooth and 

 polished portion receiving the head; this meets the lateral and 

 dorsal areas in a distinct ridge ; the dorsal and lateral faces of 

 the pronotum obsoletely punctured. Mesonotum with two parallel 

 longitudinal grooves on each side , the outer emphasized by a 

 ridge posteriorly and slightly outcurved in front. The middle lobe 

 of the mesonotum is not closely punctured, the outer lobes more 

 closely and finely. The scutellum is conical with a sharp apex, 



