48 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 97 
coarsely, shallowly, irregularly punctate, with a few inconspicuous, 
erect hairs. Scutellum narrow, elongate, rather densely pubescent. 
Elytra extending to base of fourth abdominal sternite, at base 
slightly wider than pronotum at middle, three times as long as pro- 
notum; sides very broadly, shallowly constricted at middles, the apices 
broadly, transversely truncate, with the exterior angle on each elytron 
slightly produced; surface coarsely, densely, uniformly punctate, the 
punctures forming large, rather deep pits, which are confluent on the 
black median fascia, and with a few inconspicuous, short, erect hairs. 
Abdomen beneath sparsely, coarsely, shallowly punctate, sparsely 
clothed with inconspicuous, short, erect hairs; last visible abdominal 
sternite broadly, deeply concave; first segment of posterior tarsus sub- 
equal in length to the following three segments united. 
Female.—Differs from the male in having the eyes smaller and 
separated from each other on the front by about twice the diameter 
of the antennal scape, the apical segments of the antenna more slender, 
and the last visible abdominal sternite not concave. 
Length 7.5 mm., width 1.6 mm. 
Type locality Hamburg Farm (situated on the Limon Plain along 
the Reventazén River), Costa Rica. 
Type and allotype—uU.S.N.M. No. 57671. 
Remarks.—Described from a male and female (male type) collected 
on dry wood at the type locality, July 1, 1929, by Ferdinand 
Nevermann. 
This species is allied to Cantharoxylymna bicolor Linsley, but it 
differs from the description given for that species in having the disk 
of the pronotum entirely yellowish brown, in not having the first seg- 
ment of the posterior tarsus as long as the following four segments 
united, the tarsi and middle and posterior tibiae entirely black, and a 
black ring near the apex of the posterior femur. 
Genus OXYLYMMA Pascoe 
OXYLYMMA TUBERCULICOLLIS, new species 
Female.—Elongate, moderately flattened above, subopaque, brown- 
ish yellow, except eyes, top of head, tips of mandibles, antennae in 
part, scutellum, basal and median fasciae on elytra, metasternum, and 
upper margin of anterior and middle femora and all tibiae, which are 
black or brownish black. 
Head prolonged into a short snout, coarsely, sparsely punctate on 
front, densely, finely punctate on occiput, transversely rugose behind 
eyes, with a deep, narrow, longitudinal groove on front, clothed with 
a few short, inconspicuous, erect hairs; eyes large, moderately emar- 
ginate, widely separated on the front. Antenna filiform, extending to 
