606 STAPHYLINIDA. 
rather shining, ferruginous, with the apex paler. Hind body rather broad, ferruginous, 
with the apex paler. 
This species will be readily recognized by the sculpture being effaced on the hinder 
part of the head. 
Only one example, in very bad preservation, has been obtained. 
11. Dibelonetes latitans. 
Latiusculus, ferrugineus; elytris abdomineque nigricantibus, apicibus (cum antennis), palpis pedibusque flavis. 
Var. Corpore ferrugineo, elytris fascia mediali abdomineque segmento antepenultimo nigris. 
Long. 4 millim. 
Hab. Guaremata, El Tumbador 2500 feet (Champion); Nicaracua, Chontales (Jan- 
son); Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 
Antenne slender, only slightly thicker externally; penultimate joint as long as 
broad. lLabrum yellow, large, with two elongate denticles in the middle. Head elon- 
gate, finely reticulate, the vertex subtruncate. Thorax about as broad as long, distinctly 
narrowed behind, reticulate. Elytra longer and much broader than the thorax, the 
basal two thirds black, the apical third bright yellow, closely and distinctly punctate. 
Hind body fuscous-black, with the two apical segments yellow; broad. Legs pale 
yellow, quite unspotted. 
I am not at all sure that the five examples I ascribe to this species are actually 
all conspecific. From the State of Panama we have three examples—one of the 
typical, two of the varietal form; in this latter the deficiency of colour may be due 
in part to immaturity. The example from Chontales is intermediate between the 
two Panama forms; and the exponent from Guatemala also exhibits some slight 
distinctions. 
This species is closely allied to the Amazonian Sunius peltatus. 
STILICOPSIS. 
Stilicopsis, Sachse, Stett. ent. Zeit. 1852, p. 144. 
Acanthoglossa, Kraatz,Wiegm. Arch. 1859, i. p. 144. 
This genus, though approximated by certain forms of Dibelonetes, appears to be truly 
distinct. It has the labrum nearly unarmed in the middle, the mandibles short, and 
the thorax shorter and broader than it is in any species of Dibelonetes. In addition to 
the North-American species (for which it was instituted) and the species found in our 
region, it will include 9. pictus, S. modestus, and S. crassus, Sharp. Iam unable at 
present to point out any good character by which the Eastern genus Acanthoglossa can 
be distinguished from the New-World Stilicopsis, the difference in the shape of the 
labrum between the two being so slight that I cannot at present treat it as of generic 
