104: October, 
ticulisque 3 basalibus antennarum rufo-testaceis, pedibus flavo-testaceis ; elytris 
leviter eneo-tinctis, marginibus basalibus et lateribus explanatis testaceis, 
supra equaliter striatis, interstitiis planis. Long, 25 lin. 
Rio Janeiro. Taken by the late Mr. Squires. 
Genus LoxAaNnpRrwUs. 
Leconte, Journ. Acad. Nat. Sci. Phil., New Ser., 11, p. 252 (1852). 
Chaudoir, Rev. et Mag. Zool., 1868, p. 342. 
This perfectly natural and well defined genus of the Feronia group 
has undeservedly shared the fate of the numerous loosely characterized 
divisions of this great assemblage, and been set aside as a synonym 
without sufficient examination. In Gemminger and von Harold’s cata- 
logue it has been fused, apparently at a random guess, with Argutor. 
The following are its generic characters :— 
Dilated joints of anterior tarsi of the ¢ cordiform, oblique, 7. e., 
inner anterior angles advanced. 
Elytra without abbreviated scutellar stria, and with a single large 
puncture on the 8rd interstice. 
Posterior tarsi grooved on each side. 
Metathoracic episterna elongated. 
Mentum with central tooth entire, obtuse at apex. 
The absence of an abbreviated scutellar stria, and the presence of 
a single large puncture on the 8rd interstice, although apparently tri- 
vial characters, are important from their constancy throughout the long 
series of species of which the genus is composed. The elytra are re- 
markable also for the silky iridescent gloss with which they are, in the 
great majority of the species, adorned. 
The Lowandri are of much slighter build than the Feronie, and in 
this respect remind one rather of the Calathi. They are most nearly 
allied to Abacetus, differing in the oblique anterior tarsi of the ¢, and in 
the thoracic fovee not forming simple, sharp sulci. The head is of oval 
form, with moderately prominent eyes and short frontal fover; the 
thorax has a single, deep, and broad fovea on each side of the base. In 
habits they resemble the Calathi, living gregariously under heaps of dead 
leaves and sediment. They are peculiar to the tropical and warmer re- 
gions of the earth, and are the only representatives of the great Feronia 
group which I met with in the region of the Amazons. 
Leconte and Chaudoir have described 19 species ; but several de- 
a 
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