NEW JAPYGIDAE—EWING AND FOX 295 
six microsetae. Segment X dorsally forming a square and bearing 
several conspicuous, curved setae. Right arm of forceps much 
broader toward its base than left arm, but distally narrower and more 
strongly curved; proximal half of right arm with four teeth, the first 
three of which are subequal and smaller than the fourth, and all of 
which are hyaline apically; distal half of right arm with five or six 
very low vestiges of teeth. Left arm of forceps slender throughout, 
basal three-fourths with a row of very low, flat, subequal teeth, and 
distal to them a large tooth with a hyaline apex. 
Length of body, including forceps, 8.0 mm.; width (that of segment 
III of abdomen), 0.9 mm. 
Type locality —Livingston, Guatemala. 
Type (holotype).—U.S.N.M. No. 55216. 
Remarks.—Description based on the following: One adult (holo- 
type) taken October 5, 1905, by E. A. Schwarz and H. S. Barber and 
_ two adults taken at Lombardia, Honduras, 1924, by W. M. Mann. 
In the rectum of the holotype specimen are the remains of some 
~ small pterygotan insect. According to W. H. Anderson, of the Bu- 
_reau of Entomology and Plant Quarantine, they probably represent 
those of a coleopterous larva of the family Staphylinidae. 
The genus Metajapyx is not well differentiated from Japya, since 
the species of the two intergrade. Further study may lead to its 
suppression. 
MIXOJAPYX COOKI, new species 
Priate 34, Fraures 5, 6 
Description —Head with lateral margins almost straight for most 
of their length but strongly curved near base. Antenna very long, 
number of segments 44 or 45; segment I broader than long; segment II 
slightly longer than I and with axis slightly outcurved; segment ITT 
as long as II and broadest near distal margin. All antennal segments 
well clothed with hairlike setae which do not form rows; as the size 
of the segments becomes smaller, their setae likewise become finer and 
shorter. Distal tooth of mandible much larger than the other three; 
two proximal teeth united at base and together forming a lobe, de- 
marcated by a suture from the remaining part of the mandible. Outer 
lamina of inner lobe of maxilla pectinate and similar to the other 
laminae. 
Pronotum with a well-developed median apodeme and well supplied 
with setae of varying lengths. Mesonotum with the distinct, movable 
prescutum typical of the genus. The latter bears over 50 setae of 
varying sizes and lengths. Scutum with sublateral apodemes straight 
and slightly converging posteriorly. Metanotum similar to mesono- 
tum but slightly larger and not so well sclerotized. Thoracic spiracles 
