PLATYPUS. 101 
ridge with the postero-lateral angle. Free border of the posterior femoral recess serrate and subspinous 
on the metasternum, with a stronger spine arising from the episternum. 
Hab. Panama, Volcan de Chiriqui (Champion). 
This species, of which Mr. Champion took a single specimen, is certainly allied to 
P. marginatus, Chap.,and may possibly be identical with it. But Chapuis’s description 
does not entirely correspond, because in P. marginatus he describes all the elytral 
interstices as carinate, whereas in P. imporcatus only the alternate interstices are 
carinate. Moreover, the shape of the apex of the elytra in P. ¢mporcatus by no means 
corresponds with that in Chapuis’s figure. It is justifiable, therefore, to describe this 
insect under a separate name, more especially as P. marginutus is a Brazilian species. 
15. Platypus discolor, sp. n. (Tab. IV. figg. 9,¢; 9a, apex of elytra.) 
Mas. Ferrugineus, elytris post partem tertiam basalem nigricantibus; prothorace latitudine sublongiore, sub- 
tiliter irregulariter punctato; elytris anguste sulcatis, interstitiis nitidis, subconvexis, alternis elatioribus, 
postice gradatim declivibus, tuberculatis. 
Long. 5°3 millim. 
Male. Ferruginous-brown, with the posterior two-thirds of the elytra blackish. Front subconcave, rather 
closely areolate and rugose, with a median impressed point; vertex covered with large variolose 
impressions, the median space and bases of the lateral lines shining. Prothorax a little longer than 
broad, the sulcus shallow, obsolete behind, and not extending forwards beyond the posterior third; punc- 
tuation fine, irregular, and dense towards middle of disc, side and hind margins with larger shallow 
punctures; surface with a double impression on either side internal to the lateral emargination. Elytral 
strie fine, shallow, distinctly punctured, deeper and wider towards apex; interstices feebly convex, 
shining, finely and irregularly punctured, posteriorly gradually declivous, and serrate with series of 
piliferous tubercles: Ist, 3rd, and 5th a little wider and more prominent; base of the 2nd punctured, 
of the 3rd, 4th, and 5th sparingly granulate; apex of the 3rd conjoined by a fold with the short postero- 
lateral process ; declivity below the fold subtriangular and nearly vertical. 
Hab. Panama, Volcan de Chiriqui (Champion). 
- One example. Similar to P. liratus, but smaller, with narrow fine elytral sulci; in 
the latter species they are much wider than the interstices. 
16. Platypus godmani, sp. n. (Tab. IV. figg.10, 3; 104, front; 10d, apex of 
elytra: 11,2; 11a, front.) 
Niger, prothorace quadrato, utrinque preter sulcum congerie punctorum parva munito; elytris sulcatis, inter- 
stitiis alternatis, haud carinatis. 
Mas. Nitidus, fronte concava grosse punctata ; interstitiis 1°, 3°, 5°, 7° in declivitatem productis, spinulosis, 
angulis posticis in lobos obliquos subquadratos productis, margine postico inde fortiter emarginato. 
Long. 10°5 millim. 
Fem. Subopaca, subsericea; fronte supra fortiter rugose punctata, medio carinata; elytrorum sulcis latis 
subtiliter multipunctatis, interstitiis ad basin apicemque granulatis. 
Long. 11 millim. 
Black, underside and legs piceous; prothorax quadrate ; elytral interstices alternate. 
Male. Front subconcave, shining, strongly punctured, the punctures deep and circular over the mouth, 
longitudinally strigose towards the vertex. Prothorax shining, scantily punctured, except at the margins ; 
sulcus fine, with a group of about nine small punctures on either side of its anterior extremity; hind 
