482 COLYDIIDZ. 
We have received three specimens only of this species, which appears to be struc- 
turally very similar indeed to S. simplex; but it is a narrower insect, and may be 
identified by the total absence of punctures on the elytra, these being replaced by 
three fine lines between each costa. The first costa though very close to the third at 
the tip is not connected with it. 
5. Sosylus centralis, sp. n. 
Angustus, piceus, opacus, antennis pedibusque rufis ; capite prothoraceque subtiliter punctatis, hoc elongato ; 
elytris costatis, intervallis fere esculpturatis, omnium obsoletissime punctatis. 
Long. 4—43 millim. 
Hab. Muxico, Teapa (H. H. Smith); GuateMata, Coatepeque, Zapote (Champion) ; 
PanaMa, Bugaba, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
Though very closely allied to S. simplex, this is an undoubtedly distinct species, the 
thorax being much longer and quite finely punctate. The epistome is broad in front, 
subtruncate, with the angles rounded; the whole of the upper surface rather finely 
punctate. Thorax considerably longer than broad, distinctly narrowed from the middle 
to the base, very dull, even, covered with rather fine narrow punctures. Elytra very 
dull, distinctly costate, the coste strongly elevated behind, the first nearly touching 
the third before the apex but not joined to it, the intervals very dull and almost 
destitute of any sculpture. 
Ido not think there are any well-marked distinctions between the sexes of this 
species, but we have received only six individuals, so that I may have only one of the 
sexes before me. ‘The specimens do not quite agree, the one from Teapa being a little 
larger and black ; while the two from Guatemala have the punctuation of the inter- 
stices not quite so obsolete. They are so similar that I must consider them all as 
belonging to one somewhat variable species. SS. duplicatus, Pascoe, is an allied form 
having a shorter thorax, and duplicate series of fine punctures on the intervals 
between the costz of the elytra. 
6. Sosylus infans, sp. n. 
Angustus, castaneus, subopacus ; epistomate parvo, canaliculato ; capite subtilissime punctato ; prothorace sat 
elongato, subtiliter crebre punctato; elytris costatis, costa prima ad apicem cum secunda haud conjuncta, 
intervallis strigoso-sculpturatis. 
Long. 34 millim. 
Hab. Mexico, Cordova (Sallé); Guatemaua, Cerro Zunil, Pantaleon (Champion). 
Head flat ; epistome small, in the female distinctly canaliculate, but in the male very 
deeply so, in this Jatter sex bituberculate at the extremity ; punctuation dense and very 
fine. Thorax moderately long, a good deal narrowed behind, finely not densely punc- 
tate, the punctures narrow and elongate, but not forming strie. Elytra costate, the 
