3o STREPS1PTERA 



Parasites of wasps of the subgenus Psammophila : 



6. E. luctuosae, Pierce, Proc. U. S. Nat. Mus. Vol. 40, p. 5o2 (1911). Idaho, Colorado. 



Parasites of wasps of the genus Miscus : 



7. E. sieboldii, Saunders. Germany. 



Paraxenos sieboldii. Saunders, Trans. Ent Soc. Lond. p. 47 1 1872). 

 E. sieboldii. Pierce, Proc. Ent. Soc. Wash. Vol. q, p. 70 11908). 



2. Genus OPHTHALMOCHLUS, Pierce 



Ophthalmochlus. Pierce, Proc. Ent. Soc. Wash. Vol. 9, p. 79 (190S); Hull. U. S. Nat. Mus. no. 66, 

 p. 142 (1909). 



Characters. — Malt. — Head transverse; vertex medianly produced in a high ridge, on each 

 side of which arise the antenna. Mandibles very acute and curved near tip; maxilla; two-jointed. 

 Prothorax and mesothorax transverse. Metathorax elongate; praescutum bisinuate at base, truncate at 

 apex, subquadrate; scuti approximate for a short distance, making the scutellum distinctly pedunculate; 

 scutellum triangular, pedunculate at each angle, sides convex; postlumbium transverse, of a different 

 texture and color from the surrounding parts; postscutellum elongate, convex, sides parallel, apex 

 convex. CEdeagus similar to that of Eupathocera, Tarsi four-jointed, without claws. 



Female. — Cephalothorax broader than long, margins irregularly convex, constricted at base, 

 rounded at apex. Mandibles oblique, acutely toothed on inner angle, emarginate between this and 

 prominently rounded outer angle. 



Triungulinid. — Similar to that of Pseudoxenos. 



Type of genus. — 0. duryi, Pierce. 



In order to facilitate the classification of the species the genus has arbitrarily been divided into 

 subgenera according to the host habits. 



I. Subgenus OPHTHALMOCHLUS, nov. subgen. 



Type of subgenus. — 0. duryi. Pierce. 



Geographical distribution of species. — Parasites of wasps of the genus Cklorion, subgenus 

 Priononyx. 

 1. 0. duryi, Pierce, Proc. Ent. Soc. Wash. Vol. 9, p. 83 (1908); Bull. U.S. Ohio. 



Nat. Mus. no. 66, pp. 142, 143 ; pi. 10, ff. 7, 8, i3 (1909). — PI. 2, 



Fig. 2; PI. 4, Fig. 27. 



2. Subgenus HOMILOPS, Pierce 



Homilops. Pierce, Proc. Ent. Soc. Wash. Vol. 9, p. 80 (igoS); Hull. U. S. Nat. Mus.no. 66, pp. 145, 146 

 (1909). 



This subgenus was erected as a genus because of Templeton's attributing three-jointed maxilla; 

 to his species. It is now believed best to consider it merely as a convenience group. 



Type of subgenus. — 0. westwoodii, Templeton. 



