100 RHYNCHOPHORA. 
Male. Similar in size and appearance to the male of P. quinque-costatus. Ferruginous brown, with the apical 
half of the elytra piceous. Front of the head concave, coarsely punctured and rugose, with a transverse 
row of strong punctures along epistomal border. Prothorax little longer than broad, closely and finely 
punctured, the sulcus deep and preceded by a fine linear impression. LElytral sulci wide, irregularly and 
coarsely punctured, the elevated interstices narrow and shining, rugose and coarsely punctured at base, 
not angulated at the declivity but produced to the apex of the elytra as interrupted series of tubercles, 
evident on the Ist and 3rd interstices; alternate interstices coarsely punctured and almost obsolete at 
base, appearing as narrow elevated lines towards the middle of the elytra, and bearing three or four 
tubercles before the declivity, which is wider than in P. quinque-costatus, with the lateral angles small, 
pointed, and directed obliquely outwards; hind margin convex and tuberculate in the line of the first 
interstice. Posterior femoral recess with one small spinous tubercle on the episternum. 
Hab. Nicaracua, Chontales (Janson). 
The only example of this species that I have seen is in my own collection. The 
description of P. marginatus, Chap., applies to it in many respects, but the sculpture of 
the prothorax in the latter species is quite distinct, as is the structure of the recesses 
for the posterior femora. 
13. Platypus latreillei. 7 
Platypus latreillei, 3 % (lege 2 8), Chap. Mon. Plat. p. 148, fig. 60°. 
Hab. Mexico}, Oaxaca (Sallé); Guatemata, San Juan in Vera Paz (Champion) ; 
Nicaragua, Chontales (Belt, Janson). 
The collection contains typical examples of both sexes. A female specimen from 
Chontales, not separable in structure from P. latreille?, is ferruginous, with the apex 
of the elytra infuscate. The difference in colour is presumably due to immaturity, but 
‘of this the specimen presents no evident signs. 
14. Platypus imporcatus, sp. n. (Tab. IV. figg. 8, ¢; 8a, apex of elytra ; 
8 6, recess for posterior femur.) 
Mas. Piceus, elytris postice nigricantibus, subtus cum pedibus ferrugineus; prothorace oblongo, densius 
punctato, punctis ad latera et basin fortibus; elytris late sulcatis, interstitiis 1°, 3°, 5°, 7°, 8°, 9° carinatis, 
nitidis, postice gradatim declivibus, tuberculatis, ceteris fere obsoletis, opacis, postice subtuberculatis ; 
margine apicali convexe rotundato, integro. 
Long. 6 millim. 
Male. Piceous-brown, the elytra black towards apex. Front subconcave, rugosely punctured, with a median 
smooth elevation impressed in the middle, from which a weak carina extends to the vertex. Prothorax a 
little longer than broad, the sulcus deep, wider in front, preceded by a slight impression on each side of the 
disc, on either side of its anterior extremity is a minute pore-like puncture ; punctuation of the anterior 
half close and rather fine, weaker posteriorly, the basal half of the sulcus and the hind margin bordered 
with strong, deep, rounded punctures, the side margins with close, shallow, variolose punctures. FElytra 
with wide sulci, their punctures shallow and confluent, the elevated interstices smooth, shining, and 
narrow from the base to the declivity, the others nearly obsolete, dull throughout, narrowly raised and 
tuberculate behind the middle; bases of the 3rd and 4th interstices granulate, those of the 2nd, 5th, and 
succeeding interstices coarsely punctured; declivity very oblique, dull, its hind margin uniformly con- 
vexly rounded, the carinate interstices continued on to it without angulation as a series of piliferous 
tubercles, the 1st not reaching the apex of the declivity, the 3rd curved outwards and conjoined by a 
