COLEOMEROPSIS.—DIORYMERUS. 211 
cavity, the scutellum.reduced to a minute point; pygidium not visible; femora deeply sulcate and 
unarmed beneath ; tarsal claws connate at the base; first ventral suture strongly arcuate ; body elliptic, 
flattened above, sparsely squamose. 
This genus, based upon a single species from Guatemala, is closely related to 
Coleomerus, differing from it in having the very deep rostral channel terminating in 
the produced portion of the prosternum, the eyes well-separated, the median lobe of 
the prothorax more produced, and the scutellum reduced to a minute point. The 
rostrum in the unique example obtained was so tightly locked in the cavity that 
the apical portion has unfortunately been broken off when an attempt was made to 
lift it. 
1. Coleomeropsis cribricollis, sp.n. (Tab. XIII. figg. 21, 21a.) 
Nigro-piceous with a slight brassy lustre, shining, rather sparsely clothed with flavo-cinereous, hair-like scales, 
the vestiture of the under surface and legs finer and cinereous. Head densely, finely punctate; rostrum 
moderately stout, curved, about as long as the prothorax, rugosely punctate; eyes moderately large, 
separated by about the width of the rostrum. Prothorax broader than long, conical, very feebly 
constricted in front; densely, very coarsely punctate. Elytra gradually narrowing from the base, 
somewhat rounded at the sides; punctato-sulcate, the interstices flat, asperato-punctate. Beneath 
closely punctate. Legs very short. 
Length 24, breadth 1} millim. 
Hab. Guatemaa, San Isidro, near Mazatenango, Pacific slope, 1600 feet (Champion). 
DIORYMERUS. 
Diorymerus, Schonherr, Cure. Disp. Meth. p. 311 (1826) ; Gen. Cure. iil. p. 799; Lacordaire, 
Gen. Col. vii. p. 219. 
Diorygomerus, Gemminger and Harold, Cat. Col. viii. p. 2618. 
A well-marked genus including a large number of Tropical-American forms, few of 
which have been described as yet. Not a single species has hitherto been ascribed to 
our region, whence twenty-five are now recorded, all of which are treated as new. ‘The 
Central-American forms are mostly of small size, and, with a few exceptions, shining 
black in colour, resembling small polished seeds. The species are difficult to 
distinguish, but good characters are to be found in the armature of the femora and 
tibiee, the form of the rostrum, the presence or absence of shallow basal fovez on the 
prothorax, the shape of the scutellum, the striation of the elytra, and the sculpture of 
the pleura. The prothorax is regularly convex in all the species now added, the male 
of D. levipes excepted. 
a. Femora unarmed. . ae 
a. Intermediate and posterior tibie, and sometimes the anterior tibiz also, 
dentate or angulate near the base externally. 
a. Anterior femora not (except in Species 4 and 5) conspicuously widened 
at the base. 
a’. All the tibice denticulate on their inner edge ; scutellum transverse: 
length of body 3-4 mm. 
: 2 EE 2 
