1922 ] Hymenopterous Genus liar pay ocry plus and its Allies. 103 
gocryptus and Nealgoa are evidently more closely similar, 
although many characters which might be useful are not given 
by Bridwell, and were it not for the great geographical separation, 
I should hesitate to propose a new genus for the North American 
species. 
The characters which appear useful in differentiating the 
four genera follow. 
Olixon Cameron. 
Biol. Centr.-Americana, Hymenoptera, vol. 1, p. 412 (1887) 
Kieffer. Bull. Soc. Sci. Bruxelles, vol. 35, p. 216 (1911) 
( Saphobetliylus ) 
<?. Head transverse, wider than the thorax. Antennae 
a little shorter than the body; first joint of flagellum one-half 
longer than second, all flagellar jo'nts long, at least four times 
as long as thick; antennae inserted below the lower margin of 
the eyes; malar space with a black carina connecting the eye 
and mandible; cheeks half as long as the eye. Mandibles curved, 
pointed and without tooth. Eyes almost attaining the posterior 
margin of the head. Prothorax a little longer than wide, bulging 
laterally in front. Anterior wing reaching to the base of the 
abdomen, without venation or stigma. Propodeum as long as 
the prothorax, its hind angles acutely toothed. Tarsal claws 
with a small tooth near tip. Third segment of abdomen a little 
shorter than the first. External genitalia consisting of a median 
stylet between a pair of parallel, upturned, filiform projections. 
Harpagocryptus Bridwell. 
Proc. Hawaiian Entom. Soc., vol. 2, pp. 34 (1908). 
9 . Head transverse, wider than the thorax, occiput 
arcuately emarginate. Antennae elongate, slender, much longer 
than the head and thorax together; second and following joints 
of antennae subequally elongate, many times as long as thick; 
first joint shorter than second; pedicel very short, but evidently 
longer than wide. Mandibles with a long apical tooth and three 
