294 PROCEEDINGS OF THE NATIONAL MUSEUM vor, 92 
specimens available to be described. Styli long, each with a subbasal 
seta which is long and curved. Forceps somewhat variable in dental 
armature, those of the holotype illustrated in figure 2. 
Length of body, including forceps, about 7 mm.; width (that of 
segment III of abdomen), 0.7 mm. 
Type locality—Barro Colorado Island, Panama. 
Type (holotype). —U.S.N.M. No. 55215. 
Remarks.—Description based on the following four specimens: One 
adult (holotype) taken July 19, 1938, by E. C. Williams at the type 
locality; one adult (paratype) taken at Porto Bello, Panama, by E. A. 
Schwarz; one adult (paratype) taken at Bobas, Guatemala, in May 
by W. M. Mann; one adult (paratype) taken at Navarro, Costa Rica, 
in March by W. M. Mann. 
METAJAPYX SCHWARZI, new species 
PLATE 34, FIGURE 4 
Description—Head with lateral margins strongly curved poste- 
riorly. Antenna with 36 to 88 segments; segment I considerably 
broader than long; segment IT longer than I and with axis strongly 
outcurved ; segment ITT as long as I] and slightly broader, with straight 
axis. The antennal setae on the more distal segments partly arranged 
in two or three transverse rows. Each mandible bearing four teeth, 
the most distal of which is larger than the three others, which are 
subequal. Outer lamina of inner lobe of maxilla long, curved, and 
without teeth, other laminae strongly curved, flattened, and pectinate. 
Pronotum but slightly longer than broad, bearing about 24 setae, 
two pairs of which are situated near middle of lateral margins. 
Mesonotum divided near its anterior end by a curved transverse 
suture, in front of which is situated a single pair of straight, sub- 
median setae. Metanotum similar to mesonotum but slightly longer 
and broader. Tarsi each terminated by two unequal, lateral claws 
and a vestigial median claw. 
Abdomen with first seven terga subequal; each with a transverse 
line near its anterior end, in front of which there are no setae and each 
divided also by a hyaline, median groove. Sterna II to VII likewise 
each with a transverse line near its anterior end, but without the 
median groove. Subcoxal organs of segment I each bearing a row 
of small, short, subequal setae and median glandular organ of same 
segment with a large number of circular, dome-shaped, unequal, con- 
tiguous disculi. Styli similar, subequal, each without subbasal spur but 
with a single seta which is curved and ventrolateral. Segments VIII 
and IX shorter than the others and each strongly bilobed antero- 
laterally. Segment IX much shorter than VIIT and with a single 
pair of curved lateral setae and a dorsal, posterior, marginal row of 
