296 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 92 
large, conspicuous. Tarsi each terminated by two unequal, lateral 
claws and a vestigial median claw. Each lateral claw bears a poorly 
formed basal tooth, not easily seen in some of the tarsi. 
Abdomen with terga II to VI subequal, each having a hyaline me- 
dian groove and a transverse line near its anterior end, in front of 
which are a few microsetae but no setae. Segment VII of abdomen 
broader than VI, more heavily sclerotized and with posterior angular 
lobes more conspicuous; segment VIII not so broad as VII but better 
sclerotized, segment IX of usual shape, and X longer than broad and 
with lateral margins almost straight. Forceps heavily pigmented 
and sclerotized; basal three-fifths of left arm provided with two rows 
of five or six irregularly placed teeth. For other characters of for- 
ceps see figure 6. Subcoxal organs of segment I each with a fringe 
of short, subequal setae, behind which is a row of sensory pits; median 
glandular organ (pl. 34, fig. 5) large, conspicuous, with convex pos- 
terior margin and over 100 spherical, tuberclelike disculi, many of 
which are contiguous. Styli each with curved ventrolateral seta and 
some with a poorly developed basal spur. 
Length of body, including forceps, 24.0 mm.; width (that of seg- 
ment III of abdomen), 3.2 mm. 
Type locality —‘Tactic, St. Rosa,” Guatemala. 
Type (holotype) —U.S.N.M. No. 55217. 
Remarks.—Description based on three adults taken at type locality, 
June 1904, by O. F. Cook. In the rectum of one of these specimens 
are the undigested remains of an insect which W. H. Anderson iden- 
tified as some coleopterous larva, probably a species of Carabidae. 
MIXOJAPYX BARBERI, new species 
PLATE 34, FicuREs 7, 8 
Description—Head with lateral margins moderately outcurved. 
Antenna of moderate length, number of segments 40 to 46, but usually 
42; segment I broader than long; segment II slightly longer than I 
and with axis very slightly outcurved; segment III about as long 
as II and broadest apically; segment IV subequal to III but with 
posterior margin distinctly curved. Allantennal segments well clothed. 
with thin setae of varying lengths which do not form rows. Distal 
tooth of mandible much the largest of the four; two proximal teeth 
united at base forming a lobe, demarcated from the remaining part 
of mandible. Outer lamina of inner lobe of maxilla long, slender, 
curved, without teeth. 
Pronotum with a well-developed median apodeme and well supplied. 
with setae of varying lengths, some being but little larger than. 
microsetae. Mesonotum with the typically distinct, movable prescu- 
