ANCAUS. T17 
more than half as long as the head. Head polished and shining, with two large feeble 
depressions.in front. Thorax without punctuation, with a small depression at each 
hind angle. 
This species is closely allied to A. megacephalus, but has longer mandibles, the 
surface of the head and other parts polished instead of being dull, the thorax shorter 
and broader and more sinuate at the sides, and the elytra longer. Only one example 
was procured. 
2. Anceus megacephalus. 
Anceus megacephalus, Fauv. Bull. Soc. Linn. Normand. ix. p. 61’; Notices ent. il. p. 57%. 
Hab. Mexico, Teapa (Pilate! ?). 
I have seen only one example, one of Fauvel’s types from Chevrolat’s collection ;. 
A. clavipes, Sharp, is very closely allied, but I have little doubt is distinct, the specific 
characters in this genus being very slight. 
3. Anczus porrectus. 
Rufo-testaceus, sat nitidus, fere impunctatus; capite, prothorace elytrisque omnino subtilissime strigulosis ; 
prothorace medio depresso, subtiliter canaliculato. 
Long. 32 millim. 
Hab. Guatemata, Panzos, and San Juan in Vera Paz (Champion). 
Mandibles short. Antenne with the two penultimate joints transverse, the three 
preceding joints smaller and slightly transverse. Head broad in front, rather deeply 
bi-impressed. Thorax about as long as broad, the sides a good deal narrowed and 
distinctly sinuate behind. Elytra a little longer than the thorax. 
Very closely allied to A. megacephalus, but with the antenne thinner; the thorax 
more narrowed behind, depressed along the middle, and the surface more finely strigose 
and therefore more shining. Two examples were obtained. 
4. Anceus minutus. 
Piceus, sat nitidus; capite, prothorace elytrisque minutissime strigulosis; prothorace basin versus leviter 
angustato, ad angulos posteriores tantum obsolete impresso. 
Long. 23 millim. 
Hab. Guatemata, Panzos (Champion). 
Mandibles porrect, moderately long. Antenne very short, thick, only a little more 
slender at the base than at the extremity. Head large, rather deeply bi-impressed in 
front; eyes very small. Thorax about as broad as long, the sides not sinuate, the 
channel on the middle almost obliterated. Elytra but little longer than the thorax. 
This insect is near A. megacephalus, but not half the size, the elytra shorter, and the 
fovea at the hind angle of the thorax scarcely to be detected. Unique. 
