ART. 3 SOME NEW CHALCID-FLIES TIMBERLAKE 15 



about one-third longer than wide ; f rontovertex broader, being fully 

 one-half wider than long; ocelli very large, in a more obtuse-angled 

 triangle, the posterior pair touching the acute occipital margin 

 and removed by one-half of their own diameter from the eye mar- 

 gins; cheeks fully as long as the eyes; face with a median rounded 

 ridge extending from the clypeal margin to a little above the 

 antennal sockets, or about two-thirds of the length of the face, and 

 somewhat widening above the antennae; scrobes uniting above in a 

 large common impression, somewhat triangular in shape, with the 

 apex truncated and with sloping walls; antennal sockets situated in 

 slight depressions on each side of the facial prominence about half- 

 way between the ocular line and the clypeal margin, yet noticeably 

 closer to the clypeal margin than to the nearest point of the eye. 



Scape moderately long, reaching somewhat beyond the scrobal 

 impression, slender and compressed, considerably shorter and a little 

 stouter than in the female ; pedicel hardly longer than thick ; f unicle 

 six-jointed, each joint with a long, slender, cylindrical branch of 

 which the second is longest, the following gradually shortening, the 

 sixth about two-thirds as long as the second; basal part of first joint 

 no longer than thick, that of second joint slightly longer, the follow- 

 ing joints gradually lengthening, the base of the sixth being about 

 thrice as long as thick; club solid, compressed, clavate, and widest 

 near the apex, about as long as the basal parts of the last three 

 f unicle joints combined; all parts of the funicle and club provided 

 with fine, soft, short setae. 



Abdomen triangular in shape, strongly depressed, about one-half 

 as long as the thorax, the venter with a median plica. 



HEXACNEMUS ARMITAGEI, new species 



Plate 1, fig. 10 ; plate 2, figs. 16, 20, 23, and 23a 



Female. — General color metallic black, the head, pleura, and abdo- 

 men more lustrous ; occiput with a strong green luster, cheeks bluish, 

 the face, especially the antennal prominence and the scrobes, with a 

 bluish and purple luster, the large punctures with a pale greenish 

 luster; mesoscutum slightly greenish, the axillae and scutellum 

 opaque, although the margins of the latter are metallic green; pleura 

 dark metallic blue; abdomen bluish green, the apical tergite with 

 two narrow, parallel, longitudinal, slightly impressed yellowish lines 

 at the middle, the ovipositor black but becoming slightly brownish 

 beneath at base; legs bluish black, the front tibiae, basal half of 

 middle tibiae, and all the tarsi brownish yellow, the front and hind 

 tarsi dusky above, with the last one or two joints fuscous, the middle 

 tarsi with only the last joint fuscous; antennae black, mandibles 

 brown ; wings clear, whitish hyaline, becoming nearly invisible when 

 mounted in balsam, the veins brownish. 



