HETEROMERA. 525 
pee and less approximate towards the sides, and finer towards the apex, the interstices flat or very 
eebly convex, almost smooth; beneath shining, almost smooth; prosternum produced behind, received 
by the excavate V-shaped mesosternum ; tibiz feebly channelled on their outer edge. 
Length 63-8, breadth 3-33 millim. 
Hab. Mzxico, Temax in North Yucatan (Gaumer). 
Many specimens. Closely allied to Z. occultus, but differing from it in the punctures 
of the elytral series being much finer towards the apex; in J. occultus they are very 
coarse and deep at the apex, as well as at the sides. The single specimens from 
Tuxtla, Belize, and Yzabal, quoted under I. occultus (anted, p. 114), are best placed 
here; the one from Tuxtla has the thorax more closely and distinctly punctured 
than the others, and all of them have the punctures towards the suture of the elytra 
finer than in those from Yucatan. 
HESIODUS (p. 115). 
Hesiodus sordidus (p. 116). 
The Brazilian specimen included by me under this species differs from the Mexican 
type in having the punctures of the elytral striae much coarser and less approximate 
towards the sides, and the thorax more coarsely and sparsely punctate; I propose to 
separate it under the name Hestodus egaensis. 
Hesiodus jansoni (p. 116). 
To the locality given, add :—Mextico, Temax in North Yucatan (Gaumer). 
One specimen. 
6. Hesiodus ellipticus. 
Oblong-ovate, convex, black with a brassy lustre. Head closely, finely punctate, the eyes transverse ; antennx 
with the basal joints rufous; prothorax strongly transverse, trapezoidal, narrowing from the base, the 
sides a little rounded in front and feebly sinuate behind, the anterior angles obtuse, the base strongly 
bisinuate and not grooved within, the hind angles rather sharp, the surface very finely, sparsely punctate ; 
elytra strongly convex, comparatively broad, narrowing from about the middle, with rows of moderately 
fine, rather distant punctures placed upon almost obsolete strie, the punctures becoming evanescent 
towards the apex and not coarser towards the sides, the interstices flat, exceedingly minutely punctate ; 
prosternum produced and received by the V-shaped mesosternum ; tibiz rounded on their outer edge; 
first joint of the hind tarsi a little longer than the following two joints united. 
Length 63, breadth 2? millim. 
Hab. Nicaracva, Chontales (Janson). 
One specimen. This species differs from the other members of the genus in having 
the thorax trapezoidal, much broader at the base than at the apex, the eyes transverse, 
and the sides of the mesosternum sharply raised. In the form of the thorax it 
approaches Gonospda. 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, January 1893. 3 YY 
