288 STAPHYLINIDZ. 
1. Bamona concolor. 
Gracilis, nitida, subtilissime pubescens et punctulata, nigra, antennis pedibusque fusco-testaceis, illis in medio 
plus minusve obscuratis ; prothorace elongato, quam elytra multo angustiore; abdomine fere impunctato, 
segmentis basalibus margine posteriore utrinque parcius albido-ciliato. 
Long. 24 millim. 
Hab. Panama, Bugaba (Champion). 
Antenne rather elongate, little thickened outwardly, obscurely yellowish, with three 
or four joints in the middle much darker; third joint rather shorter than the second, 
fourth longer than broad, tenth slightly transverse. ‘Thorax slender, rather longer than 
broad, scarcely narrowed behind, without channel or impression. Elytra rather longer 
than the thorax, entirely black, excessively finely punctulate. Hind body almost 
impunctate, the three or four basal segments furnished on each side at the hind margin 
with three or four erect white sete. Legs infuscate yellow, the tarsi yellow. 
A series of fourteen examples has been found; they show some variation in colour, 
dependent probably on the degree of maturity; occasionally the three or four basal 
segments of the hind body are paler in colour, and in some specimens the variegation 
of the antennee is less conspicuous. 
2. Bamona gracilis, (Tab. VI. fig. 22.) 
Nitida, subtilissime pubescens et punctata, sordide rufa, antennis in medio, capite abdomineque apicem versus, 
fuscis, elytris fusco-rufis, margine apicali flavescente humeris plus minusve dilutioribus; prothorace 
elongato quam elytra multo angustiore. 
Long. 24 millim. 
Hab. Guatemaa, Rio Naranjo 450 feet (Champion). 
Very closely allied to B. concolor, but of rather more slender form and dilute colour, 
and to be distinguished from the immature individuals of the darker species by the 
fact that the hind margin of the elytra is always paler; the antenne, too, are rather 
more elongate, so that the penultimate joint is scarcely transverse, and the head is 
rather more elongate and narrow. 
A series of sixteen examples shows no notable variation. 
3. Bamona marginata. 
Sat nitida, subtilissime pubescens et punctulata, fusca, thorace rufescente, antennis pedibus elytrorumque basi 
et apice testaceis ; abdomine segmentis 2°-5™ dense subtilissime punctulatis. 
Long. 23 millim. 
Hab. Guarnmata, San Geronimo (Champion). 
Antenne entirely yellow ; third joint not longer than the second, the tenth scarcely 
transverse. Head about as broad as the thorax, excessively finely punctulate. Thorax 
slightly longer than broad, narrower than the elytra, excessively finely punctulate, 
shining. Elytra rather longer than the thorax, with the hind margin broadly pale 
