1925] Guests of Eciton hamatum Collected by Prof. Wheeler 169 
Zyras (sens, lat.) ecitonis sp. nov. 
Length 5 mm. 
Head, pronotum, antennae, except first two joints, abdomen 
except margins of dorsal and lateral sclerites, black; remainder 
of body dark red-brown, legs yellow. Moderately shining. 
Head with a few distinct punctures in occipital region, about 
as long as broad, arcuate behind eyes and nearly straight at oc- 
cipital border, at middle with a carina that commences very 
indistinctly on the vertex and becomes stronger anteriorly, 
especially on the clypeus. Clypeus nearly straight at anterior 
border. Labrum five times as broad as long. Eyes very large 
and convex, more than twice as long as their distance to occipital 
border. Antennae stout, basal joint longer than second and third 
joints together, joints four to ten transverse, terminal connate, 
longer than the two preceding joints together. 
Pronotum a little broader than long with moderately abun- 
dant, scattered, large and shallow punctures, each bearing a 
semi-recumbent hair; scattered on the disc are a few longer 
erect stiff hairs and the lateral margins bear a series of five long 
ones; anterior and posterior borders arcuate, anterior corners 
and front portion of sides broadly rounded, sides behind straight 
and convergent, posterior corners subangulate; border through- 
out with a distinct though fine marginal line, most conspicuous 
on posterior border. Scutellum rugosely punctate. Elytra 
broader than long, shorter than pronotum, humeri subgibbous, 
sides feebly arcuate, posterior corners rounded, border nearly 
straight; surface regularly, abundantly punctate, the punctures 
distinct, though very much finer than on pronotum, each bearing 
a fine, silky, semirecumbent yellowish hair, mixed, especially 
toward the sides, with very sparse, erect black hairs. Abdomen 
at base slightly narrower than elytra, sides feebly arcuate, seg- 
ments two, three, and four subequal in length; dorsal surface 
glabrous, except for a pair of widely separated setigerous punc- 
tures at middle of third and fourth sclerites, two pairs of punc- 
tures on apical third of the fifth ; apical margins with very 
sparse, black hairs. Apex and ventral surface, as well as meso- 
and metathorax thinly pubescent. 
