170 Mr. J. O. Westwood on 
Hoc labrum (insecto quiescente) spatium inter clypeum et 
pedes anticos occupat, reliquis partibus oris omnino abscon- 
ditis. Mandibule magne cornez, extus curvatz apice acute, 
margine interno tenui, tenuissime ciliato. Mawille basi cor- 
nez, lobo apicali maximo membranaceo ciliato, lobo interno 
parvo membranaceo ciliato. Palpi maxillares breves, crassi, 
4-articulati: arliculo Imo brevissimo; 2do et 3tio brevibus, 
crassis; 4to majori, ovata, apice attenuato. Mentum maxi- 
mum, corneum, fere in duas partes incisione magna setosa 
marginis antici divisum. Palpi labiales breves, 3-articulati, 
articulis duobus basalibus brevibus, ultimo longiori-ovato. 
Labium membranaceum, e lobis duobus longissimé setosum 
formatum. Antenne 10-articulate, articulo 1mo magno lato, 
angulo antico interne producto, articulis 3-7 sensim crassio- 
ribus. Clava 3-articulata, brevis, crassa, articulis distinctis. 
Prothorax fere rotundatus, supra depressus, margine antico 
emarginato lineaque transversa elevata cum illo proxima et 
parallela; lateribus tuberculatis et posticé angustatis, mar- 
gineque postico in medio parum producto. Scutellum trian- 
gulare. Prosternumsubacuminatum. Jlytra thorace latiora, 
supra fere plana, anum tegentia, singulo seriebus 4 longitudi- 
nalibus tuberculorum costas totidem fere formantibus. Pedes 
elongati, tibiis subangustis, tuberculato-serratis ; antici den- 
tibus tribus majoribus ad apicem externé armatis. Calcaria 
pedum 4 posticorum brevissima. Ungues simplices. Color 
obscurus. 
This most singularly formed Lamellicorn appears to me to be 
more nearly allied to the Zrogide than to the Geotrupide, or any 
other family, although in several respects it differs from every 
known group. In its dull colour and tuberculated setose appear- 
ance, the large size of the exserted labrum, horny mandibles, 
10-jointed antennz, with the joints of the club free, and concealed 
labium, it agrees with the Trogide ; but in its depressed form, 
concealed mouth (shutting in with the base of the fore legs), 
elongated feet, notched anterior tibiz, membranous lobes of the 
maxilla, mandibles not toothed and unfurnished with a membra- 
nous notch on the inner margin, and singularly formed mentum, 
it differs from the characters of that family. The points of agree- 
ment appear to me to be of greater value than those in which the 
genus differs from that family. If, on the other hand, we regard 
the membranous labrum and mandibles as the typical character of 
the Aphodiide and Scarabeide, it differs at once from those two 
families ; whilst the distinctly free jointed clava of the 10-jointed 
