PLATYDEMA. | 197 
30. Platydema guatemalense. (Tab. VIII. fig. 21.) 
Broad ovate, convex, dull reddish testaceous. Head shining, coarsely and closely punctured, the basal half. 
piceous, the rest red, the epistoma defined by a shallow groove; antenne with joints 7-10 strongly 
transverse, the four basal joints testaceous, the others slightly darker ; maxillary palpi testaceous, the 
last joint broadly triangular ; prothorax narrowing from the base, the sides feebly rounded, the anterior 
angles obtuse and almost rounded, the apex scarcely emarginate, the base strongly bisinuate, almost 
smooth, opaque, reddish testaceous, marked with black, thus:—a broad irregular subtriangular mark 
before the middle, and a small transverse mark on each side of the disc before the base, and on either side 
externally a crescent-shaped spot; scutellum triangular, red; elytra a little broader than the prothorax 
at the base, slightly rounded at the sides, regularly punctate-striate (the punctures shallowly impressed, 
fine, and closely placed), the interstices smooth and almost flat, opaque, the entire surface about equally 
variegated with interrupted longitudinal black and sordid yellow streaks, the suture and margins and 
the epipleure reddish ; legs reddish testaceous, the tibiee more or less infuscate ; beneath shining, reddish 
brown, the flanks of the prothorax testaceous. 
Length 52 millim. 
Hab. GuaTemata, San Gerénimo (Champion). | 
One example. Not nearly allied to any known species. 
31. Platydema ornatum. (Tab. VIII. fig. 22.) 
Platydema ornatum, Chevr. Petites Nouv. Ent. 11. p. 186 (sp. no. 45). 
Hab. Mexico! (coll. F. Bates), Cordova (Sailé). 
This distinct species will be readily identified from our figure, which is taken from 
a typical example from Cordova. 
32. Platydema pretiosum. (Tab. VIII. fig. 23.) 
Ovate, strongly convex, reddish testaceous, opaque. Head slightly shining, red, finely, very closely, and 
almost confluently punctured, broadly impressed transversely in front, the antennary orbits swollen and 
reflexed ; antennee stout from the base, black, the five basal joints, and the outer half of the apical one, 
testaceous, joints 7-10 transverse; maxillary palpi testaceous, the last joint triangular ; prothorax short, 
broad, transversely convex, the sides rounded and narrowing very little anteriorly, the apex arcuate 
emarginate, the anterior angles rounded, the base very strongly bisinuate, closely embracing (and towards 
the sides almost appearing to overlap) the elytra, smooth, the disc with a short black line towards the 
base and an oblique black stripe on each side (not reaching the basal or apical margin), midway between 
which and the lateral margin is a much smaller longitudinal black spot ; elytra the width of the prothorax 
at the base, the sides almost straight from the base to the middle, thence narrowing to the apex, regularly 
punctate-striate (the punctures fine, shallow, and closely placed), the interstices smooth and flat, sordid 
yellow, each elytron marked with four large black spots—one near the base (broad, emarginate ante- 
riorly), two about the middle (longitudinal in form, the inner one distant from the suture, the outer one 
not quite reaching the lateral margin), and one (irregular, and placed near the lateral margin) some 
distance before the apex, the base also, towards the sides, slightly marked with black, the suture broadly, 
the lateral margin narrowly, and the epipleurx, dull red; legs testaceous ; beneath reddish brown, 
shining. 
Length 43 millim. 
Hab. British Honpuras, Belize (Blancaneauz). 
One example. I can suggest no near ally to this prettily marked species. 
