104 RHYNCHOPHORA. 
margin; rather deeply punctate, but the sculpture obscured by the clothing. Llytra 
slender, oval, rounded at the shoulders, marked with fine, shallow striz, which are 
indistinctly punctured ; the setee are pallid in colour, and much longer than those on 
the head and thorax. Legs reddish. Corbels of hind tibiz almost simply laminate 
externally. Four specimens. 
This species bears a considerable resemblance to Amphidees macer; but that insect 
has well-marked ocular lobes, whereas in D. latifrons these are quite absent. The 
corbels of the hind tibiee would, no doubt, have been called open by Lacordaire. 
4, Deamphus puncticollis, sp. n. 
Gracilis, piceus, squamosus et setosus, squamulis submetallico-micantibus; rostro fere subcylindrico; elytris 
subtiliter punctato-striatis. 
Long. 74 millim. 
Hab. Mexico, Huitzilac in Morelos (Hége). 
Rostrum subcylindrical, very coarsely punctate, with a few opalescent scales between 
the punctures, scarcely transversely depressed between the eyes ; antennz dusky red. 
Thorax transverse, much rounded at the sides, narrowed and a little constricted in 
front, strongly setose, rather coarsely punctate, with opalescent scales between the 
punctures. Elytra slender, the shoulders not at all prominent ; with series of rather 
coarse punctures, squamose, and with numerous fine elongate sete. One specimen. 
Besides being much smaller than D. latifrons, this species has a more slender, 
cylindrical rostrum. 
EPICARUS. 
Epicerus, Schonherr, Gen. Cure. ii. p. 3238 (1834) ; Lacordaire, Gen. Col. vi. p. 132; Horn, 
Rhynch. N. Amer. p. 20. 
This extensive genus is almost peculiar to our region, as in addition to those here 
enumerated, two species of it from the United States of North America are all that are 
known. It is, however, extremely close to the Palearctic genus Barynotus—so much 
so indeed, that I do not myself see any satisfactory way of distinguishing the two. 
The genus is a peculiarly difficult one to deal with, the sexes of some species differing 
greatly in size and form. But these sexual distinctions seem to be by no means 
constant, while in allied species they are yet of a slightly different nature; thus it is 
extremely difficult to decide, from the inspection of a few specimens, where the specific 
limits should be drawn. 
I divide the genus, in the hope of facilitating the determination of the species, into 
three groups, one of which is natural and easily recognized; on the other hand, the 
distinction between the second and third groups is a very vague and variable one. 
