274 STAPHYLINIDA. 
1. Hoplomicra clavicornis. 
Breyiuscula, parce punctata et pubescens, nitidula, nigro-fusca, antennarum basi, capite, thorace, abdominis 
basi pedibusque testaceis; antennis brevibus, extrorsum incrassatis ; prothorace valde transverso. 
Long. 2 millim. 
Hab. Guatemaa, Capetillo (Champion). 
Antenne quite short, very thick externally, the four basal joints yellow, the others 
dark; third joint small, much smaller than the second ; fourth joint small; fifth very 
distinctly, the following very strongly transverse ; terminal joint stout, rounded. Head 
rather broad, but much narrower than the thorax, shining, indistinctly punctate, yellow. 
Thorax very strongly transverse, twice as broad as long, a little narrowed in front, base 
rounded, the colour like that of the head, the surface shining, very indistinctly 
punctulate. Elytra much longer than the thorax, fuscous, rather shining, sparingly 
and finely punctate. Hind body rather broad, reddish at the base, darker towards the 
extremity, very little punctate. 
Three individuals have been found; the colour varies in accordance with the maturity 
of the specimen. The male has the dorsal plate of the second segment of the hind 
body armed with three long spines, projecting far back, the middle one straight, the 
one on each side converging towards the middle. 
SILUSA. 
Silusa, Erichson, Kaf. Mark Brand. i. p. 377; Rey, Hist. Nat. Col. Fr. Brév. Bolitoch. p. 146. 
Stenusa, Kr. Nat. Ins. Deutsch. u. p. 47. 
Up to the present time this is a small genus of ten species, but has a very wide 
distribution, occurring in Europe, North America (a single species), Chili, Ceylon, New 
Guinea, and Australia. One of the characters of the genus is drawn from the structure 
of the labial palpi, and this I have only been able to verify in an unsatisfactory manner 
in the Central-American species; but, so far as I have been able to see these organs, 
they agree with those of the European S. rubiginosa sufficiently to justify the classifi- 
cation of the Central-American forms in the same genus. 
1. Silusa hirtella. 
Ferruginea, crebrius longiusque pubescens ; antennis fuscis, basi et articulo ultimo ferrugineis; capite thora- 
ceque obsolete, elytris sat crebre et fortiter, abdomine crebrius et fortius, punctatis. 
Long. 4 millim. 
Hab. GuaTEMALA, Capetillo (Champion). 
Antenne only moderately long and stout, the two or three basal joints red, and the 
apical joint again pale, the other joints darker; third joint elongate, rather longer than 
the second ; fourth rather longer than broad; of five to ten each isa little broader than 
its predecessor, the first of them as long as broad, the last of them slightly transverse. 
