198 HETEROMERA. 
33. Platydema panamense. (Tab. VIII. fig. 24.) 
Ovate, strongly convex, dark ferruginous, opaque. Head broad, dull red, very shallowly, finely, and confusedly 
punctured (when seen under a strong lens), the epistoma well defined posteriorly and at the sides by a 
distinct groove ; antennz with the four basal joints, and the apical one entirely, red, the rest black, 
joints 9 and 10 transverse; prothorax strongly transverse, the sides slightly rounded and quickly con- 
verging from the base, the base (feebly) and apex bisinuate, the anterior angles obtuse, smooth, red, with a 
broad transverse black band (extending nearly to the lateral margins) in the middle ; scutellum triangular, 
red; elytra convex, scarcely wider than the prothorax at the base, rounded at the sides, somewhat coarsely 
punctate-striate (the punctures distant one from another), the interstices smooth, black, with two strongly 
angulated zigzag transverse bands (one, before the middle, starting from a little below the shoulders, 
extends to the second interstice, where, turning abruptly, it is continued in a straight line to the base, 
the other, beyond the middle, starts from the lateral margin and ends abruptly in the second interstice) 
and the apex reddish testaceous, the suture (from the base to the apex) and the lateral margins (and 
epipleurs) reddish brown ; legs red; beneath reddish brown, slightly shining. , 
Length 43-57 millim. 
Hab. Panama, Volcan de Chiriqui ( Champion). 
Five examples. This species somewhat resembles-P. undatum; it is, however, more 
convex than that species; the head is broader, and not excavate in the male; the 
prothorax and elytra differently marked, the base of the latter (except near the suture) 
black, &c. 
34. Platydema tibiale. (Tab. VIII. fie. 25.) - 
Platydema tibiale, Chevr. Compt. Rendus de la Soc. Ent. Belg. xxi. p. exlviii'. 
Hab. NicaraGua, Chontales (Belt, Janson, coll. F. Bates); Panama, Bugaba (Cham- 
pton).—AMAzons, Ega' (coll. F. Bates). 
I am unable to detect any difference of importance between specimens from the 
Amazons and others from Central America; these latter have the elytra more distinctly 
marked with red and the subapical spots more or less confluent, while in others from 
Ega these spots are sometimes entirely absent. In some examples the thorax is 
distinctly suffused with red on each side, and the sides more rounded than in others: 
the latter is possibly a sexual character. 
A specimen from Chontales is figured. 
35. Platydema 15-maculatum. (Tab. VIII. figg. 26, 27.) 
Platydema 15-maculatum, Chevr. Compt. Rendus de la Soc. Ent. Belg. xxi. p. exlix’. 
Hab. GUATEMALA, Panzos (Champion) ; Nicaragua, Chontales! (coll. F. Bates, Belt, 
Janson); Panama, Bugaba, Volcan de Chiriqui ( Champion).—Amazons, Para, Tocantins 
(coll.. F. Bates). 
Numerous examples. Ina variety from Chontales (Belt) the elytra have the lateral 
margins and the suture to the apex (as well as the base, narrowly) black ; the two 
inner spots of the first band smaller than in the type; the spots of the second band 
confluent and forming a broad transverse angular band, extending inwardly to the 
