© BS. 
a 
204 _ HETEROMERA. 
margins of the prothorax narrowly stained with black ; the entire upper surface darker ; the legs more 
or less stained with piceous. 
Hab. Panama, Volcan de Chiriqui (Champion). Two examples. 
P. unicolor may be at once known from its allies by its unicolorous red colour, 
the upper surface without spots or markings. In the four individuals before me each 
one has the antenne differently coloured; one (from Volcan de Chiriqui) has the 
apical joint entirely red, though the basal joints are stained with piceous. 
A Chontales specimen is figured. 
47. Platydema venustum. (Tab. IX. fig. 12.) 
Bright reddish testaceous, broad ovate, convex, shining, glabrous. Head sparingly but very evidently punc- 
tured, with several distinctly coarser impressions along the anterior margin ; prothorax comparatively broad 
anteriorly, the sides more rounded than in the allied species, the surface exceedingly finely and sparingly 
punctured, the lateral margins prominent, with a transverse row of four black spots (the two inner of 
which are the largest) placed near the anterior margin, and another black spot on each side placed about 
midway between the outer anterior one and the base; antenne with the two basal joints; and the third 
and fourth joints partly, and the outer half of the apical one, red; scutellum broad, triangular; elytra 
regularly and rather deeply punctate-striate, the interstices exceedingly finely and sparingly punctured, 
the lateral margins reflexed and prominent, with five rounded black spots on each, arranged thus—a 
discoidal row of three large and equidistant (the posterior ones sometimes smaller), and two much smaller, 
one placed midway between the first two large spots but much nearer the suture, the other (longer and 
narrow) similarly placed but near the lateral margin; beneath red, very evidently but sparingly punc- 
tured ; mesosternum V-shaped, deeply concave within ; prosternum strongly produced ; legs red, the tibize 
more or less infuscate, slightly curved, the anterior pair dilated (more distinctly in the male) towards the 
apex, the outer apical angle produced and distinctly dentiform. 
Length 5-6 millim., breadth 3-4 millim. 
Hab. Nicaracua, Chontales (Belt, Janson). 
Var, The third or posterior discoidal spot on each elytron very much longer than in the type, extending 
inwardly to the first dorsal stria, and connected with the central discoidal spot by a narrow longitudinal 
streak. 
Hab. Panama, Volcan de Chiriqui (Champion). 
_ Eight examples of the type, one of the variety. We figure one of the former. 
The following species is perhaps best placed, provisionally, at the end of the genus 
Platydema :— 
? 48, Platydema(?) nitidum. | 
Scaphidema nitidum, Chevr. Petites Nouv. Ent. ii. p. 170°. 
Hab. Mexico, Yucatan (Pilate 1). 
Unknown tome. “ Ovale, nigrum, nitidum, capite, palpis, antennis, pedibus corpo- 
