4 o STREPSIPTERA 



the flabellum of the sixth. Prothorax and mesothorax short and simple; metathovacic praseutum and 

 scuti subequal ; scutellum short and rounded: postlumbium deeply concave; postscutellum verv long 

 and thick. Wings with seven primary veins, and a very short vein beyond the radius, another detached, 

 but apparently arising from the medius. and a short vein arising just behind the medius. Tarsi three- 

 jointed, without claws. 



Female unknown. 



Type of genus. — H. curtisii, Dale. 



Geographical distribution of species. — Hosts unknown. 



i. H. curtisii, Dale, in Curtis, Brit. Ent. p. 433 (i832). — PI. 5, Fig. 6. England. 



H. curtisii. Pierce, Bull. U. S. Nat. Mus. no. 66, p. i56 (19091. 



2. Genus NEOCHOLAX, Pierce 



Neocholax. Pierce, Bull. U. S. Nat. Mus. no. 66, pp. 160, 161 (1909). 



Characters. — Head transverse. Mandibles short and acute, not reaching one another; 

 maxillae with first joint short, cylindrical, obliquely truncate at apex; second joint three times as long, 

 stout, tapering, sensitive. Antenna? seven-jointed, similar to those of Peniacladocera. Pronotum and 

 mesonotum arcuate, anteriorly fitting into excavation of head. Wings having radial vein meeting the 

 costal margin beyond middle, medius basally united with radius for a short distance, a short detached 

 vein behind radius, medius with narrowly detached branches in front and behind. CEdeagus slender, 

 basally arcuate, apically reflexed at a right angle and tapering to a point. 



Female. — Cephalothorax scarcely broader than long, with sides rounded, head convex. 



Triungulinid. — Eight abdominal segments simple, ninth elongate, enclosing tenth, tenth bearing 

 two very long bristles; each ventral segment bearing on its apical margin three short hairs arranged in 

 longitudinal rows; venter of ninth segment with three pairs of bristles, of which the middle pair are 

 shortest, the next longer, and the outer pair still longer. 



Type of genus. — N . Jacob soni, Meijere. 



Geographical distribution of species. — Parasites of fulgorid leafhoppers. 



1. N. jacobsoni, Meijere. -- PI. 4, Fig. 29; PI. 5, Figs. 10-13. Java. 



Halictop'nagus jacobsoni. Meijere, Tijdschr. v. Ent. Vol. 5i, p. 186, pi. 6. 



ff. 1-7 (19081. 

 .V. jacobsoni. Pierce, Bull. U. S. Nat. Mus. no. 66, p. 161, pi. 14, 



ff. 1-4(1909). 



3. Genus MEGALECHTHRUS, Perkins 



Megalechthrus. Perkins, Rep. Exp. Stat. Hawaiian Sugar Planters' Ass. Bull. 1, Pt. 3, p. io5 (igo5); 

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



Characters. — Male. — Antennas seven-jointed, the last five being foliaceous. 



