182 , STAPHYLINIDA, 
slightly narrower than the elytra, these pale yellow, rather closely punctate. Hind 
body a good deal narrowed to the apex, only sparing punctate. Legs clear yellow. 
In the male the hind margin of the seventh dorsal plate is prominent in the middle, 
and slightly emarginate, and at each side externally there is a very short tooth. 
Found in company with H. heterocera in dung on the mountains. The species 
should be placed near H. longicornis, Grav. Although superficially very similar to 
H. heterocera, it is abundantly distinct by the structure of the fourth joint of the 
antenne and the less punctate hind body. The male characters are slightly different, 
the lateral tooth being less prominent; the sternal structure is also a little different, the 
middle coxe being less approximate, and the mesosternal process consequently broader 
with distinctly truncate extremity. There is almost no carination of the mesosternum 
in the middle in front. 
Mr. Champion has sent four individuals; but the exponent from Nicaragua is 
unique. 
20. Homalota leucoptera. | 
Nigra, antennarum basi, pedibus elytrisque testaceis; antennis elongatis, articulis 4°-10™ haud transversis ; 
prothorace transversim subquadrato, cumque elytris crebre punctatis; abdomine apicem versus sub- 
attenuato, crebre punctato. 
Long. 34 millim. 
Hab. GuateMaa, Capetillo, Guatemala city, San Gerdnimo (Champion); Panama, 
David (Champion). 
Third joint of antenne elongate, considerably longer than the second; fourth evidently 
smaller than those adjoining, but longer than broad; fifth to tenth differing but little 
from one another, each longer than broad; terminal joint elongate. Thorax not strongly 
transverse, but a little broader than long, base very little rounded ; hind angles obtuse, 
not rounded. Elytra a little longer than the thorax, pale yellow. Hund body rather 
elongate, rather closely punctate, the apical segments a little more sparingly than the 
basal, these latter usually a little paler in colour. 
In the male the apical segment terminates in four short, obscure teeth. 
This species is closely allied to H. heterocera and H. cognata, but differs from the 
former by the more elongate antenne with pale base and longer fourth joint, and 
from H. cognata by the pale base to the antenne and by the much less sparingly 
punctate hind body. The sternal structure is similar to that of H. cognata; but the 
mesosternum is less indistinctly carinate in front. 
The individuals from Panama are immature, but appear to be rather smaller and a 
little more finely punctate than those from Guatemala above described. 
21. Homalota perdita. 
Fusca, antennarum basi, pedibus elytrisque testaceis, prothorace brunneo, abdomine brunneo-fusco, segmento 6° 
