PLATYPUS. 113 
Three specimens; the two males agree in all respects with one in my possession 
from Colombia, which was named by Chapuis. 
Division PLATYPI PUNCTATO-SULCATI, Chapuis. 
45, Platypus occipitalis. 
Platypus occipitalis, 3 Q (lege 2 3), Chap. Mon. Plat. p. 273, fig. 164 ‘, 
Hab. Guaremata!; Costa Rica! (Pittier); Panama, Volcan de Chiriqui (Champion). 
One female was taken by Mr. Champion. The prothorax is almost impunctate, save 
for a group of five or six piliferous punctures between the sulcus and the lateral 
emargination, and three or four punctures along the sides of the sulcus, which, in this 
specimen, are set on a slight longitudinal elevation. A male from Costa Rica taken 
by Pittier is in the British Museum collection. 
Species incerte affinitatis. 
46. Platypus frontalis, sp.n. (Tab. IV. fig. 25, front, ¢ .) 
Fem. Ferruginea; fronte supra 0s profunde transverse impressa, inter oculos umbonata, scapo antennarum 
subtus fortiter producto, transverse triangulari; prothorace quadrato, sat dense punctato; elytris lineato- 
punctatis. 
Long. 4:5 millim. 
Female. Ferruginous, the elytra a little lighter ; underside, antennee, and legs testaceous. Front with a deep 
transverse shining impression over mouth, above elevated to form an obtusely pointed nodus between the 
eyes, and dull, with close punctuation, the median space of the vertex not raised, infuscate, prolonged to 
the interocular elevation, and marked with an impressed line; scape strongly produced downwards to form 
a transverse triangle, its peripheral edge fringed. Prothorax quadrate, slightly narrowed towards base, the 
arginations nearly obsolete, sulcus short and abbreviated behind; surface with irregular dense 
est towards the middle, and absent around the sulcus. LElytra rather short, distinctly 
lineato-punctate, the sutural row not impressed; interstices flat, confusedly punctured at base, then in 
irregular single rows, the punctures a little finer than those of the striz, transversely rugose and hairy 
towards the apex, base of the 3rd carinate; apical depression of each elytron as long as broad, tuber- 
culate, its lower border and lateral angle rounded. Anterior tibie with six or seven well-marked carine ; 
cavities for the hind femora furnished on their anterior border with small pointed tubercles. 
Hab. Panama, Bugaba (Champion). 
One specimen. This insect is easily recognizable by the structure of the head and 
the antennal scape, and by the quadrate and scarcely emarginate thorax. It is 
impossible to place it in any existing group of the genus, or to form a separate group 
for it until the male is known. The head and the antenne show certain points of 
resemblance to P. pulcher, Chap., but as the elytra are neither sulcate nor striate, it 
must not be admitted among the Platyp? sulcati. 
lateral em 
pun ctuation, clos 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 6, March 1896. 20 
