92 PSYCHE [October 



Description of the Parasites. 



Family PTEROAIALIDAE. 

 Subfamily Merisinae. 

 Tribe Roptrocerini. 

 Trityiepiis n. genus, 



Male, female: — Head orbicular, wider than thorax. The median line of the 

 face concaved; both mandibles 4-dentate; ocelli in a very flat triangle, merely a 

 curved line in the center of the vertex; ovipositor not exserted; antennae with but a 

 single ring-joint, 13-jointed; the pedicel distinctly twice longer than the first funicle 

 joint; club 3 jointed; antennae inserted far below the middle of the face, near the 

 clypeal border; the first funicle joint the shortest of the joints of the funicle. General 

 color metallic blue-black, the forewings clouded, the stigmal vein subequal in length 

 to the postmarginal vein, slightly longer; the marginal vein distinctly shorter and 

 thicker than the submarginal vein; marginal vein of hindwings long. Metathoracic 

 carina distinct, entire, the spiracle moderate in size and oval in shape. Parapsidal 

 furrows faint, incomplete; scutellum with a faint transverse grooved line at caudal 

 third. Abdomen ovate, the median line of the ventum slightly convex; segments 

 2 and 3 the longest, subequal, 2 longer than ?, however; segments 4 and 5 subequal, 

 shorter; 6 shorter and nan-ower; widest at about the fourth segment; the posterior 

 margin of segments 2, 3, and 4, at least, slightly incised or emarginate at the median 

 line, less so on segment 5. Tarsi 5-jointed. 



The absence of the spiracular sulci and lateral folds, the sessile abdomen, single 

 tibial spurs of the posterior tarsi, the 5-jointed tarsi, 13-jointed antennae, and vena- 

 tional characters distinctly show the position of this genus, though if it were not for 

 the nearly straight cephalic margins of the axillae and 5-jointed tarsi, it would run 

 equally as well to the Eulophine tribe Hemiptarsenini of the family Eulophidae, 

 where it would come next to Necremnus Thomson. Near to Uriella Ashm. and 

 Tropidogastra Ashm. from which it is separated by the single ring-joint of the 

 antennae. 



Type: — T. hemerocampae species nova described in following, 



Tritneptis hemerocam^pae species nova. 



Female: — Length variable, 2.25 mm. average. 



General color metallic bluish black, the abdomen shining; scutellum purplish; 



