FAM. HALICTOPHAGID^E 37 



indistinct distal vein behind the apex of radius and a distinct detached vein in front of medius, cubitus 

 lacking. Tarsi as in Pentozocera. CEdeagus similar to that of Pentozocera. 

 Female unknown. 



Type of genus. — P. schwarzii, Perkins. 



Geographical distribution of species. — Parasites of leafhoppers of the genus Agallia. 

 t. P. schwarzii, Perkins. — PI. 3, Fig. 2; PI. 6, Fig. 13. New South Wales. 



Halictophagus (?) schwarzii, Perkins, Rep. Exp. Stat. Hawaiian Sujrar Plan- 

 ters' Ass. Bull. 1, Pt. 3, pp. 104, io5, pi. 1, ft". 2, 7; pi. 2, f. 2 (igo5). '- : 



P. schwarzii. Pierce, Proc. Ent. Soc. Wash. Vol. 9, p. 80 (1908); Bull. 

 U. S. Nat. Mus. no. 66, p. i5y, pi. i3, ff. i3, 14 (1909). 



3 Genus AGALLIAPHAGUS, Pierce 



Agalliaphagus. Pierce, Proc. Ent. Soc. Wash. Vol. 9, p. 83 (1908); Bull. U. S. Xat. Mus. no. 66, 

 pp. 159, 160 (1909). 



Characters. — Male unknown. 



Female. — Cephalothorax suboblong, the anterior median area distinct in apical view, but gene- 

 rally hardly visible in surface view, owing to its position on the apex of the head, which is bent at an 

 angle to the outer surface, tuberculate on either side of this area; the whole disk of the head deeply 

 impressed so as to form a great cavit}' leading into the opening of the brood-chamber. 



Type of genus. — A. americanus, Perkins. 



Geographical distribution of species, — Parasites of leafhoppers of the genus Agallia. 



1. A. americanus. Perkins. — PI. 4 Fig. 9. Ohio. 



Halictophagus (?) americanus, Perkins, Rep. Exp. Stat. Hawaiian Sugar 



Planters' Assoc. Bull. 1, Pt. 3, p. io5, pi. 3, f. 6 (igo5). 

 A. americanus. Pierce, Proc. Ent. Soc. Wash. Vol. 9, p. 83 (1908); Bull. 

 U. S. Nat. Mus. no. 66, p. 160 (1909). 



4. Genus PENTOZOE, Pierce 



Pentozoe. Pierce, Proc. U. S. Nat. Mus. Vol. 40. p. 5o5 (191 1). 



Characters. — Male. — Head excavated behind, produced over antenna?. Eyes mam - facetted. 

 Antenna? with flabelli short, flat and broad. Mandibles short and acute, slightly passing each other ; 

 maxilla? long, second joint long. Prothorax and mesothorax arched far forward into head, the former 

 appearing only as a disk. Elytra moderately long. Pra?s'cutum elongate triangular, narrowly truncate 

 by scutellum : scuti quadrate, diagonal, approximate at apex of praescutum, not reaching to lateral 

 processes of scutellum; scutellum with median anterior lobe separating scuti, behind which it is more 

 or less quadrate with postero -lateral prolongations; postlumbium of different consistency from the other 

 parts, and almost as long as the scutellum; postscutellum convex, broad and about as long as praescutum 

 and scutellum together. Wings with seven primary veins, the costa and subcosta strong, the area 

 between these and medius darkened ; a very wide detached vein arising just beyond the darkened area; 

 medius extending to margin with long detached branch in front of it ; the two anal veins straight. Legs 

 normal; tarsi three-jointed. Ninth abdominal segment elongate ; cedeagus slender, inflated at basal third 

 and strongly arched, thence very slender and at apical fourth bent back in an acute angle. 



