various Central American Coleoptera. 79 
LYTOPEPLUS. 
Lytopeplus, Sharp, Biol. Centr.-Am., Coleopt. ii, 1 
p. 494 (1895) [sub Colydiidae]. 
Brachylon, Gorham, op. cit. vii, p. 256 (1898) [sub 
Krotylidae]. 
These genera were each based upon a single species from 
Central America. Various others are now known from the 
same region, and from the Antilles and South America. 
They have the antennae apparently 8-jointed, the solid 
ovate club being formed of three fused joints, making eleven 
in all; the club itself is received in repose in a deep pit in 
the prosternum. The tarsi are 4-jointed. The long, curved 
metasternal and abdominal lines (forming the inner limit 
of the femoral depressions) are very conspicuous in both 
Lytopeplus compactus and Brachylon breve, but they are not 
mentioned in either author’s description. The broader 
prosternal process separates the genus from Lapethus. 
Euzxestus, Wollaston, type EL. parku, Woll., from Madeira, 
is deceptively like Lytopeplus; but it wants the prosternal 
fossae and the metasternal and abdominal lines, and the 
antennae are differently formed: these organs in Euxestus 
appear to me to be 11-jointed, there being six short closely 
articulated joints between the elongate third (with which 
the extremely short fourth and fifth are obliquely fused) 
and the short broad blunt club, which itself is formed of 
two connate joints. Hidoreus, Sharp, type EH. minutus, 
Sharp, from the Hawaiian Is., also wants the metasternal 
and abdominal lines. Huxestus appears to be cosmopolitan.! 
The eight species of Lytopeplus now known may be tabulated 
thus :— 
? 
a. Thorax without marginal sulcus. 
a. Elytra with abbreviated series of punc- 
tures. 
a’. Body moderately convex or subde- 
pressed. 
a’. Thorax very sparsely punctulate, 
feebly sinuate at base. . . . compactus, Sharp. 
6%. Thorax closely punctulate, more 
strongly sinuate at base . . . substriatus, n. sp. 
1 EH. piciceps, Gorh. (1898), from the Antilles and Central America 
= EF. minor, Sharp (1885), from the Hawaiian Is. This insect also 
occurs in Christmas I., Damma I., Java, etc.; it is narrower than 
the myrmecophilous HE. parkii (? = Neoplotera peregrina, Belon). 
