114 RHYNCHOPHORA. | Choragina. 
to Europe, the single species of Arwocerus, which is found on the Con- 
tinent, being evidently an importation; they may be known from the 
preceding tribe by having the antennz inserted on the upper surface 
of the rostrum with the point of the insertion visible from above : the 
rostrum is very short. 
CHORAGUS, Kirby. 
Five species are comprised in this genus, three from Europe and two 
from North America; one only is found in Britain; it is a small dark 
insect with the body subeylindrical and the elytra rather strongly 
sculptured ; the larva is described at length by Perris (1. c. p. 358) ; it 
burrows into dead wood of whitethorn and chestnut, but its galleries 
are not extensive as during the four or five months of its life they 
only attain a length of 7-8 mm.; the chief peculiarity of the genus 
is that its members have the power of leaping strongly developed, a 
fact from which it derives its name. 
Cc. Sheppardi, Kirby. Oblong, subcylindrical, very finely pubes- 
cent, black or fuscous black, with the base of antenne, and the tibie 
and tarsi ferruginous, the former being often partially dark ; antenne 
with the two first joints thick, 3-8 slender, 9-11 forming a club; eyes 
entirely lateral, forehead broad ; thorax dull, narrowed in front, sculp- 
ture extremely close, consisting of very minute round, slightly raised 
tubercles, base with a. strong straight sharply raised transverse carina ; 
elytra slightly shining, with rows of coarse punctures, pygidium exposed, 
interstices very finely sculptured; legs moderate, tarsi rather stout, 
L. 13 mm. 
In dead twigs in hedges, &c.; also sitting on the trunks of trees on or near the 
roots; rare; Chatham, Sevenoaks, Claygate, Ripley, Cowley, Kegworth, Chatham, 
Croydon; Barham, Suffolk; Newmarket Heath; Littlington, near Cambridge ; 
Kingsgate, near Margate (where I have taken several specimens in a small plan- 
tation with the Rev. T. Wood, all sitting at the base of trunks of trees) ; Deal (on 
several occasions) ; Salford Priors, near Evesham ; Repton, Burton-on-Trent; Ripon ; 
Dunham Park, Manchester; the species resembles a Cis or Dryophilus and is pro- 
bably often passed over; it may be easily known by its power of leaping. 
RHINOMACERIDZ (Nemonychide, H. R. W.). 
This family, which is extremely limited, containing as it does three 
genera, each represented by a single species, forms a transition between 
the Platyrrhinide and the Curculionide ; to the former it is allied by 
having the maxillary palpi normal and flexible, the labrum distinct and 
the antenne straight, while by the more developed rostrum and general 
appearance its members approach the Rhynchitina ; certain of the species, 
moreover, beara strong analogy to some of the Heteromera, as for in- 
stance Rhinosimus and Mycterus ; in the Curculionide proper the 
maxillary palpi are quite abnormal, being rigid and conical, with the 
