186 HETEROMERA. 
emarginate (but not deeply) ; the anterior angles rounded, the base bisinuate, the surface (when seen under 
a strong lens) exceedingly finely and sparingly punctured, dark reddish brown or black, the margins 
sometimes paler; scutellum triangular; elytra feebly rounded at the sides, finely and regularly punctate- 
striate (the punctures small and shallow and closely placed), the interstices smooth, dull black, with two 
narrow, interrupted, zigzag, transverse bands (one before, the other considerably beyond the middle) and 
the apex reddish testaceous, the base very narrowly, the suture broadly, and the reflexed margins (and 
epipleure) red or reddish brown; legs red ; beneath shining, reddish brown. 
Length 5-6 millim. (¢ @.) 
Hab. Guaremata, Capetillo, Cerro Zunil (Champion). 
Numerous examples. Allied to P. undatwm, the head in the male formed as in that 
species, but abundantly distinct. 
I have named this species after Sefor Don Juan Rodriguez, a well known Coleo- 
pterist, to whom the present writer is much indebted, and in the vicinity of whose 
estate in Guatemala this species was first captured. | 
4. Platydema hondurense. 
Subelliptic, moderately convex, dull black, opaque. Head ferruginous, the basal half a little darker, slightly 
shining, sparingly and very finely punctured, transversely impressed in front, the epistoma well defined 
at the sides and posteriorly by a narrow deeply impressed line; the intraocular space longitudinally raised 
and swollen on each side (just within the eyes), and concave in the middle in the male, very slightly 
impressed in the middle in the female ; antenne with the four basal joints, and the outer half of the 
apical one, red, the rest piceous ; prothorax comparatively narrow, transverse, the sides slightly rounded 
and converging from the base, the apex somewhat deeply arcuate emarginate, the anterior angles obtuse 
and not prominent, the base strongly bisinuate, and with a shallow oblique fovea on each side, the 
surface (when viewed with a strong lens) exceedingly finely, sparingly, and very shallowly punctured; 
scutellum scutiform, reddish brown ; elytra a little wider than the prothorax at the base, slightly rounded 
at the sides, widest about the middle, the humeri rather prominent, regularly punctate-striate (the punc- 
tures closely placed, fine towards the suture, coarser towards the sides), the interstices exceedingly 
minutely and sparingly punctured; palpi and legs light ferruginous; beneath and the epipleure light 
ferruginous, shining, sparingly and finely punctured. 
Length 53-6 miliim. (3 @.) 
Hab. Brivis Honpuras, R. Sarstoon (Blancaneau). 
Two examples. The structure of the head and the comparatively narrow thorax 
will separate this species from P. sobrinum, P. subquadratum, &c.; the head in the 
male is formed much as in P. undatum. 
5. Platydema viriditinctum. 
Oblong ovate, depressed, bronze-black above, shining. Head finely, sparingly, and shallowly punctured, 
broadly impressed transversely in front, the epistoma broad and narrow, the intraocular space shallowly 
impressed in the middle; antenne short, about reaching to the base of the prothorax, joints 9 and 10 
transverse, light ferruginous ; prothorax short, strongly transverse, the sides feebly rounded and narrowing 
from the base, the apex broadly and somewhat deeply emarginate, the anterior angles rounded, the base 
strongly bisinuate, and with a distinct longitudinal fovea on each side, the surface very finely and sparingly 
punctured ; scutellum large, seutiform ; elytra broader than the prothorax at the base, about four times 
as long as the prothorax, rather broadly margined, the humeri prominent, the base deeply sinuate, widest 
about the middle, very feebly rounded at the sides, somewhat broadly rounded behind, finely and shallowly 
punctate-striate, the interstices flat, and sparingly and very finely punctured ; labrum, palpi, and legs 
