542 . STAPHYLINIDA. 
contiguous tubercular prominences on the hind margin of the penultimate ventral 
plate, and the terminal plate broadly and angularly excised. One example. — 
4, Scopus apicicornis. 
Angustulus, subparallelus, testaceus, antennarum articulis duobus ultimis fuscescentibus, dense subtilissime 
punctatus, subopacus ; capite oblongo; tarsis brevissimis. 
Long. 33 millim. 
Hab. Guatemata, Rio Naranjo 450 feet (Champion). 
Antenne slender, so that each of the joints is longer than broad. Head oblong, 
densely and extremely finely punctured, pubescent, slightly shining, the hind angles but 
little rounded, the vertex feebly emarginate. Thorax broad, scarcely longer than wide, 
a good deal narrowed behind, very finely punctured, rather shining, with faint traces of 
a fine subcarinate line along the middle. Elytra longer than the thorax, very finely | 
punctured, not quite dull. The unique example is a female. 
* - 
5. Scopus filum. 
Elongatus, angustior, depressus, subtilissime punctulatus, testaceus, antennis abdomineque plus minusve fusco: 
tinctis. . 
Long. 23 millim. 
Hab. Guatemata, Paso Antonio (Champion). 
Antenne small and slender, the joints from about the fourth onwards more or less 
slightly infuscate, the apical joint or two being perceptibly paler. Head narrow, 
oblong, almost straight behind, very finely densely punctate, dull. Thorax only very 
slightly narrowed behind, elongate, suboblong, its front part not much produced, very 
minutely punctate. Elytra rather longer than the thorax, and of a slightly darker 
yellow colour, with a feeble appearance of infuscation; very minutely punctate, dull. 
Hind body distinctly narrowed towards the base; the dorsal aspect, at any rate, always 
infuscate. The male has a slight broad emargination of the last ventral plate, and from 
it there projects a short broad ligula which is emarginate at the tip. The small series 
of examples does not exhibit any variation. | 
6. Scopzus concolor. 
Elongatus, angustior, depressus, subtilissime punctulatus, testaceus, subopacus. 
Long. 23 millim. 
Hab. Guatumata, San Gerénimo, Chacoj (Champion), Yzabal (Sallé). 
This species can scarcely be distinguished from S. filum, except by the uniformly 
pallid colour; the male characters are, however, very different, and are indeed very slight, 
there being merely a slight emargination of the last ventral plate. ‘Ten examples were 
obtained. The example from Yzabal is in a very bad state of preservation, and its. 
determination as this species is not very certain. 
