264 The Ohio Journal of Science [Vol. XVIII, No. 7, 



arm often with lamellae, sometimes with rows of teeth, sometimes 

 unarmed; middle and hind legs long and slender, femur in form of a 

 reversed club, tibia straight and very thin, distally hardly thicker, 

 claws simple. Abdomen slightly flatly compressed, in circumference 

 mostly shortly oval, petiole short, second segment longer than third, 

 this longer than any of the following. 



Male: Head transverse, triangular viewed from the side, vertex 

 angulate, ocelli not situated close together but generally widely sep- 

 arated. Eyes rounded, pubescent. Occiput deeply concave. Pro- 

 thorax either not visible from above or barely so, the hind angles 

 attaining the tegula? on the sides; mesonotum with parapsidal furrows. 

 Wings with two basal cells, radius curved or somewhat angulate, ptero- 

 stigma lanceolate. The males differ from those of the Lestodryinini in 

 the triangular head, angulate vertex, rounded eyes, and the arrangement 

 of the ocelli. 



Genus Haplogonatopus Perkins. 

 Haplogonatopus Perkins, Rep. Exp. Sta. Hawaii, Ent. v. 1, p. 39, 1905. 



Female: Vertex distinctly and fairly deeply concave, mandible four- 

 dentate; maxillary palpus two-jointed, third antennal joint the longest 

 twice as long as the following one. Pronotum not divided by a trans- 

 verse impression into two parts. Fore trochanter same length as coxa, 

 fore femur twice as long as trochanter basally much swollen; chela 

 reaching to the base of the third tarsal joint; median arm with two 

 rows of lamcllffi which are large, pointed and set far apart, and with a 

 row of long spines, distally distinctly curved with a cluster of lamellae 

 at distal end; lateral arm nearly straight but distinctly curved and 

 notched at its distal end, medianly with a row of lamellae. First and 

 fourth fore tarsal joints the longest, the first being somewhat the longer, 

 the second and third much shorter, the second being the shortest. 



Male: Head transverse, not wider than thorax, vertex angulate, 

 occiput deeply concave; eyes large, rounded, finely pubescent; ocelli 

 in triangle, the fore ocellus situated below vertex in a concavity twice its 

 diameter in front of the lateral ocelli. These situated nearer to the 

 eyes than to each other and directly on the hind margin of the head. 

 Antennas filiform, pubescent, scape one-third longer than two, three to 

 six joints the longest, two less than half as long as three and somewhat 

 swollen, seven to ten subequal, seven slightly shorter than three. Max- 

 illary palpi not visible ventrally. Mandibles three dentate. Thorax 

 pubescent, prothorax barely visible from above the hind angles attaining 

 the tegulse, mesonotum with two distinct posteriorly converging parap- 

 sidal furrows which are approximate on the posterior margin. Wings 

 hyaline, finely haired and ciliated; venation distinct though pale, two 

 basal cells and a nearly closed marginal cell, pterostigma narrow, radius 

 distinct, long and curved almost extending to the wing margin. Legs 

 long, especially the hind legs. Abdomen subpetiolate, oval. Five 

 species of which one is North American. 



