GERAUS. 297 
much smoother in the 9, the antenne inserted at the middle, the antennal club ovate. Prothorax 
densely, finely punctate, often with indications of a raised median line. Elytra finely punctate-striate, 
the interstices densely punctate. Beneath densely punctate. Prosternum slightly depressed in the 
middle in front, unarmed in the ¢. Anterior coxe separated by fully their own width. 
Length 21-23, breadth 1-14 millim. (¢ 2.) 
Hab. Mexico, Teapa in Tabasco (H. H. Smith); British Honpvuras, Belize 
(Blancaneauz) ; GuatemaLa, Chiacam in Vera Paz (Champion). 
Found in numbers at Chiacam. Smaller and narrower than G. crucifer, the 
vestiture not so coarse, the markings equally variable (the prothorax, however, usually 
with a dark lateral stripe, in addition to the two vitte on the disc), the rostrum a little 
more slender, the prosternum unarmed in the male. ‘The present species, like 
G. crucifer and G. octomaculatus, appears to be confined to the Atlantic slope. 
75. Gerzus lineatulus, sp.n. (Tab. XVI. figg. 10, 10a, ¢.) 
Oblong-elliptic, piceous, the antenne (the club excepted), the outer half of the rostrum, and the legs obscure 
ferruginous ; thickly clothed with brown and white scales, the white scales on the prothorax condensed 
into a sharply-defined, narrow, submarginal vitta on each side and those on the elytra into a long streak 
down the suture and another on the sixth interstice, a short streak on the fourth interstice beyond the 
middle and another on the second near the apex, and various spots at the base; the vestiture of the 
under surface dense and whitish. Head closely punctate; rostrum arcuate, rather longer than the head 
and prothorax, moderately stout, closely punctured, the antennz inserted at the middle, the antennal club 
ovate. Prothorax strongly transverse, arcuately narrowing from the base; densely, finely punctate, 
with a smooth, faint, incomplete, median line, Scutellum small, almost bare. Elytra narrowing from 
the base, the humeri rounded; narrowly punctate-striate, the interstices rugulose. Beneath densely 
punctate, the first ventral segment hollowed and more sparsely punctured down the middle. Prosternum 
unimpressed behind the shallow transverse subapical groove. Anterior coxe separated by rather less 
than half their own width. Anterior tibie unguiculate. Tarsal claws small. 
Length 22, breadth 1} millim. (¢.) 
Hab. Guatema.a, Capetillo (Champion). 
One specimen, in very fresh condition, In this species the brown vestiture pre- 
dominates on the upper surface, the white submarginal vitte on the prothorax are 
sharply defined, the white lines on the elytra are conspicuous, and the scales along the 
sutural stripe are imbricate. Centrinopus alternatus, Casey, is somewhat similarly 
marked, but it has the prothorax trivittate, the scutellum densely squamose, the 
sutural stripe is wanting, &c. 
76. Gerzeus iners, sp.n. (Tab. XVI. figg. 11, 11a, ¢.) 
Oblong-ovate, rather convex, shining, black; sparsely clothed with rather coarse, narrow, setiform, yellowish- 
white scales, which are arranged in an irregular double series down each of the elytral interstices, the 
vestiture of the under surface whitish. Head sparsely, finely punctate, transversely grooved between 
the eyes; rostrum arcuate, about as long as the head and prothorax, rather stout, slightly thickened 
towards the base, sparsely punctate, the antennz inserted at about the middle, the antennal club short- 
ovate. Prothorax transverse, constricted and much narrowed in front, the sides rounded from near the 
pase; densely, confluently punctate, the narrow interspaces raised into sinuous longitudinal ridges, the 
dise with a smooth median ridge. Scutellum small, hollowed behind, almost bare. Elytra moderately 
long, punctato-sulcate, the interstices convex and sparsely, irregularly biseriate-punc‘ate. Beneath 
closely punctate 5 first ventral segment more or less hollowed down the middie. Prosternum excavate 
BIOL. CENTR.-AMER., Coleopt., Vol. IV, Pt. 5, May 1908. 2 Q9 
