PLATYPUS. lid 
Seven specimens, in addition to four types from Sallé’s collection. The two examples 
from Panama are entirely piceous, and much darker than those from Mexico and 
Guatemala. They do not, however, differ structurally. 
40. Platypus pallidipennis, sp.n. (Tab. IV. fig. 22, 2.) 
Fem. Subelongata, picea, elytris pallide testaceis, piceo-marginatis, subtus ferrugineo-testacea; fronte sub- 
concava, rugosa, medio striga brevi notata; prothorace oblongo, disco utrinque impressionibus 4, una 
submediana, 3 in limbo laterali notato ; elytris subtilissime lineato-punctatis, interstitio 3° ad basin 
granulato, 
Long. 3°3 millim. 
Female. Somewhat elongate, piceous, with the oral region ferruginous, the elytra very pale testaceous with 
a patch over the base of the 8rd interstice, the sutural and lateral borders narrowly, and the apex more 
broadly piceous. Front subconcave, finely rugose, and obscurely punctured, with a short median strigose 
impression. Prothorax oblong, shining, very scantily and finely punctured, the apical third duller, the 
punctures more distinct towards the base; its disc with four impressions on each side—one midway 
between the lateral margin and the sulcus, a little in advance of its anterior extremity, the remaining 
three near the lateral margin, opposite the emargination. Elytra with rows of very fine punctures, the 
interstices flat and impunctate, base of the 3rd granulate; terminal depression trapezoidal, its lower 
border excised in the middle and angulate towards the sides. Underside reddish-testaceous. 
Hab. Panama, Bugaba (Champion). 
The single specimen in our collection is well distinguished from the remaining females 
described in this division by the eight impressions on the prothorax. ‘The colours, also, 
are more contrasted than in any other species. 
41. Platypus concinnulus, sp. n. (Tab. IV. figg. 23, ¢; 23a, apex of elytra.) 
Testaceus, capite et prothoracis apice infuscatis, elytris stramineis ad apicem nigricantibus; prothorace 
oblongo, tenuiter punctato; elytris subtilissime lineato-punctatis. 
Mas. Fronte media puncto obsoleto notata; elytrorum interstitiis postice carinatis, margine apicali utrinque 
3-spinato, spinulis 1* et 2° ad apicem interstitiorum 1' et 3', 3° obliqua ad angulum lateralem positis. 
Long. 2°7 millim. 
Fem, Fronte rugosa, medio breviter strigosa ; elytrorum punctis ad latera obsoletis. 
Long. 3 millim. 
Testaceous, head fusco-ferruginous above; prothorax with the sulcus and a triangular patch on apex fuscous; 
elytra stramineous, their apex blackish. front rugose, with traces of a transverse impression, vertex 
closely punctate, the median line shining. Prothorax oblong, shining, duller towards apex ; sulcus fine, 
extending nearly to the middle; punctuation fine and sparse, closer along the sulcus and base. 
Male. Front with a nearly obsolete median impressed point. Striz of elytra impressed at base; base of the 3rd 
interstice punctured and not elevated ; interstices carinate at apex and alternate in length; hind margin 
trispinate, the inner pairs of spines formed by the carine of the lst and 3rd interstices, the outer pointing 
obliquely downwards, and formed by the continuation of all the interstices external to the 4th. 
Female. Front with a short impressed median striga. Elytra with rows of fine punctures, obsolete towards 
the sides, the sutural row impressed ; interstices impunctate, base of the 3rd raised and carinate; terminal 
depression longer along the inferior border of each elytron than the sutural border, vertical, and separated 
from the horizontal portion by a slight ridge. 
Hab. Guatemata, Pantaleon, Zapote (Champion). 
Several examples, chiefly from Zapote. Allied to P, ratzeburgi, Chap., from which 
