PLATYPUS. 99 
Fem, Ferruginea, fronte subconcava posterius fortiter punctato-rugosa ; elytris obsolete sulcatis, interstitiis 
subconvexis alternatis. 
Long. 7 millim. 
Ferruginous, the prothorax quadrate. 
Male. Entire front dull and strongly punctured. Prothoracic punctures close and irregular over the apical half 
and basal margin, effaced round the sulcus. Elytra infuscate towards apex, the sulci broad, with indistinct 
confluent punctures; 1st, 3rd, 5th, 7th, 8th, and 9th interstices elevated, shining, subimpunctate, becoming 
narrower and carinate behind the middle, abruptly declivous and subtuberculate posteriorly ; remaining 
interstices narrow, effaced at base, becoming elevated and shining towards the declivity, tuberculate on 
its summit, base of the 2nd, 4th, and 6th with a row of granules; declivity short, convex, with the sulci 
and carine continued on to it, and with a ridge extending from the carina of the 3rd interstice to a small 
process on the outer angle, apical margin with a tooth between the suture and lateral process. Middle 
of Jast ventral segment obtusely elevated. 
Female. Front concave, with a short median impressed striga, its oral half glossy, with a few strong lateral 
punctures, aboral half subrugose, strongly and deeply punctured ; vertex rather sparsely punctured, its 
median line alone shining. Prothoracic punctuation very fine, sparser posteriorly. Elytral sulci shallow, 
subimpunctate ; interstices subconvex, the 1st, 3rd, and 5th more elevated ; terminal depression granulate 
and shortly pilose, its sutural border longer than the inferior margin of either elytron, the lateral angles 
not prominent. 
Hab. Guatemata, Cerro Zunil, Panajachel, San Gerdnimo (Champion). 
Five specimens, one male and two females from Cerro Zunil. 
11. Platypus obliteratus, sp. n. (Tab. IV. figg. 6,3; 6a, apex of elytra.) 
Mas. Piceus, elytrorum basi ferruginea ; prothorace quadrato, conferte subtiliter punctulato; elytris obsolete 
sulcatis, interstitiis alternis leviter elevatis, in declivitate summa carinatis et angulatim declivibus, 3° ad 
basin haud granulato; ceteris non elevatis subnitidis, posterius rugosis, 4° ad basin serie granulorum 
ornato. 
Long. 7 millim. 
Male. Piceous, the basal half of the elytra ferruginous. Front concave and closely rugose, punctured towards - 
the vertex. Prothorax subquadrate, covered with close fine punctuation, the sulcus effaced behind. 
Elytral sulci almost obliterated and represented by rows of shallow irregular punctures; the alternate 
interstices slightly convex, not carinate except at the summit of the declivity, where they form short 
smooth angulated carinz, obliterated behind, the 1st alone continued to the apex by a row of tubercles, 
base of the 3rd neither punctured nor granulate; the 2nd, 4th, and 6th flattened, not strongly shining 
nor tuberculate, rugose and dull posteriorly ; declivity oblique, convex, and closely rugose, the lateral 
angles produced and pointed, from them a fold runs forwards and inwards to terminate in a small tubercle. 
Last ventral segment longitudinally carinate. 
Hab. Costa Rica, Irazu (fogers). 
One example represents this distinct species, which is peculiar among the Platypi 
plicati for the feeble development of the sulci and elevated interstices of the elytra, 
which, however, display the type of structure usual among the males of this division. 
12. Platypus liratus, sp. n. (Tab. IV. fige. 7,4; 7 @, apex of elytra.) 
Mas. Ferrugineus, elytris postice nigricantibus ; prothorace subquadrato, dense subtiliter punctato; elytris 
late sulcatis, interstitiis 1°, 3°, 5°, 7°, 8°, 9° elevatis, angustis, nitidis, posterius gradatim declivibus, 
1° et 4° usque ad marginem posticum seriato-tuberculatis, ceteris ad basin subobliteratis, ad apicem 
tuberculatis. 
Long. 6 millim, 
00 2 
