1949] Werner — Epicauta diver sicornis 77 
than the third. See fig. 8. Middle tarsi with a 
fringe of long hairs along the inside. Panama to 
Vera Cruz. E. isthmica sp n. 
Epicauta isthmica sp. n. 
Length: 10 to 20 mm. Body black, elytra brown to 
luteous ; legs except for tarsi, palpi, labrum, labium and 
clypeus luteous. Pubescence uniform, moderately dense, 
decumbent, cinereous to pale luteous. There is a dark 
scutellar and humeral spot, dark pubescence on the tarsi 
(some pale pubescence at the base of the first segments) 
and on the tips of the femora and outer edge of the 
tibiae. No dark pubescence on the abdominal sternites 
except on the apex of the fifth. Any of this dark pubes- 
cence may be greatly reduced or even absent. 
Head subquadrate ; eyes prominent, transverse, exca- 
vated but moderately broad, four-sevenths as long as 
broad at the broadest place when seen from the side, sepa- 
rated dorsally by an area slightly narrower than their 
greatest width. Surface of head densely but finely punc- 
tured, uniformly, densely microreticulate. Antennal cal- 
luses narrow, denuded, without punctures. Median im- 
pressed line distinct down to the level of the eyes, not 
augmented by a denuded border. Mouth parts except for 
mandibles luteous. Last segment of maxillary palpi 
quite narrow, half as long as wide at the widest place, 
two-thirds from the base. Male antennae as in figure 8 
or with the first two segments broader or slightly nar- 
rower, the first two segments black to luteous. Female 
antennae as in diversicornis but with the second segment 
slightly shorter than the third. 
Pronotum narrower than head, one-third longer than 
broad. Sides roughly parallel for the basal three-fourths, 
then converging at a sixty degree angle, the side slightly 
arcuate and the change in angle not abrupt. Basal im- 
pressed line distinct. Median impressed line fine hut dis- 
tinct. Surface more densely punctured than on head. 
Scutellum black. Elytra brown to luteous, with the lute- 
ous form more prevalent in the northern part of the 
range. 
