ARRHENODES.—RHYNCHONEUS. AT 
6. Arrhenodes xanthozonatus. 
Arrhenodes xanthozonatus, Jekel, Ann. & Mag. Nat. Hist. (3) il. p. 356°. 
Hab. Centra America |. 
It is quite doubtful whether this insect, which formed part of a collection made 
during the voyage of H.M.S. ‘Herald, was found in our region. The district 
mentioned is “the Pacific shore of Central America, a few specimens from more 
northern parts.” It is probable that the species is a Cyriodontus. 
RHYNCHONEUS, gen. nov. 
9. Corpus parum elongatum, prothorace lato anterius subretuso. Caput superne vix a collo separatum, ad 
latera profunde excisum, angulis liberis; metarostro lato, sat elongato; prorostro parum elongato, minus 
terete. 
The curious insect for which I propose this genus can only be compared with the 
female of Arrhenodes ; unfortunately the male is unknown, but in all probability it 
will prove to be allied to Arrhenodes, next which genus Rhynchoneus should at present 
be placed. 
In the form of the head Rhynchoneus approaches Estenorhinus, the vertex being — 
depressed and flat in the middle, so that it is not there separated from the neck by any 
distinct constriction ; at the sides the constriction is deep and the angles project back- 
wards as free lobes; the eyes are unusually convex; on the under surface the back of 
the head is formed as in Arrhenodes, female. The antenne are formed as in Arrhenodes, 
but shorter ; they are inserted farther from the eyes, so that the metarostrum is rather 
longer and the prorostrum somewhat shorter than they are in Arrhenodes ; the latter 
part is not perfectly cylindrical, but a little attenuate in front. All the femora are 
toothed, but the front tibiz have no projection on the inner margin; the tooth on the 
femur is placed nearer the extremity than it is in Arrhenodes, and is followed by a more 
abrupt excision. 
1. Rhynchoneus belti, sp. n. (Tab. II. figg. 14; 144, profile of head and 
front of thorax.) 
Rufo-obscurus, prothorace opaco, utrinque vage nigro-plagiato; elytris fortiter seriatim punctatis, interstitis 
subcarinatis, lineolis aurantiacis octodecim ornatis. 
Long. 11-25 millim. 
Hab. Nicaracua, Chontales (Belt). 
Metarostrum broad, with two vague tubercles between the antenne, and with the 
pterygia angularly prominent; head with some coarse irregular elevations between the 
eyes; antenne short. Thorax broad, the disc forming in front on each side a more or 
less distinct angular prominence, in front of which the surface is perpendicular; of a 
very dark vinous-red colour, marked vaguely with black on each side. Elytra dull, 
short, with large, remarkably deep punctures closely placed, the interstices behind the 
