AMPHIDEES, 101 
caducous. In many respects the insect agrees with Horn’s genus Peritawxia, containing 
two North-American species, one of which (P. hispida) is said to be destitute of ocular 
lobes. In A. pilosus the ocular lobes are very feeble, though undoubtedly extant; but 
I cannot think it likely to be allied to P. hispida, as Horn makes no allusion to the 
remarkable transverse constriction at the base of the rostrum. 
Group EPICHRINA. 
This group includes all the apterous Otiorhynchine of our region that have no 
ocular lobes to the thorax, and in which the scrobes—whether definite or indefinite— 
are entirely lateral, with their lower border arcuate to a greater or less extent, and 
the claws are free. These characters are strictly diagnostic, and in addition it may 
be added that the scape of the antenna is always moderate in thickness, never 
incrassate, never extremely slender. The corbels of the hind tibize vary much, but it 
may be considered as a character of the group that they are cavernous or subcavernous, 
the tip of the tibia never being extremely slender, as is the normal condition in the 
Sciaphilina. 
Horn’s “Tribe Brachyderini”’ is no doubt nearly equivalent with this group. He, 
however, remarks very truly (Rhynchophora of N. America, p. 16) that “the tribe is 
widely different from that defined by Lacordaire under the same name ;” this being 
the case—both definition and composition of the group differing entirely from 
Lacordaire’s “‘ Brachydérides ” or “ Brachydérides vrais ”—it seems preferable to adopt 
a fresh name for the group, as I have done here. 
The greater part of our Epicerina are hitherto undescribed. In arranging them 
into genera I have endeavoured to adopt a middle course, striving at the same time to 
29 
propose as few genera as possible, and to avoid placing in one genus insects strikingly 
different as regards the points that have been treated as of generic importance by 
Lacordaire and by Horn. 
_I find myself obliged to adopt fourteen genera: the following table, though not 
expressing the affinities of the genera, may help future students to determine their 
insects of this group :— 
Front femora unarmed. 
Scrobes very indefinite and broad behind. . . . 2... . Deamphus. 
Scrobes deep behind, with upper and lower borders subparallel. 
Second joint of funiculus elongate, longer than the first jomt . . Pantomorus. 
Second joint of funiculus not elongate, rarely a little longer, some- 
times shorter, than the first joint. 
Scape elongate, passing beyond the back of the eye . . . . Cacochromus. 
Scape not elongate. 
