COLEOPTERA. 67 
and elongated joint. The posterior legs are very stout in one of the 
sexes, with one stout tooth and two small spurs beneath, near the 
inner extremity of their tibiz. The head is not prolonged ante- 
riorly *. 
In a nateral order this would perhaps be the place for the Rhebus 
of M. Fischer +. 
In the others, where the antenne are always longer than the head 
and thorax, and where the legs are most commonly of the same thick- 
ness, the thorax is narrower than the base of the abdomen and some- 
what narrowed behind, and the hooks of the tarsi are entire. 
Catopus, Fab—Cerrampyx, De Geer. 
Where the posterior legs, in both sexes, are the size of the others, 
or nearly so, and where the serrated antenne are inserted into an 
emargination of the eyes, with the second joint much shorter than the 
third, in the form of a knot and transversal {. 
Spareprus, Meg. De) —Pervitus ?, Fisch. 
Similar to Calopus in the legs and insertion of the antennz ; but 
these latter organs are simple, with their second joint obconical like 
the third, and at least half as long §. 
Dytinus, Fisch.—Henors, Dryors, Necypacis, /ab—CEpemeEra, 
Oliv. 
Where the legs are also of the same thickness, or nearly so, in both 
sexes, but where the antenne, always filiform, are inserted before 
the eyes. The elytra are not subulate or abruptly narrowed towards 
the extremity ||. 
(Epemera, Oliv.—Necypauis, Drops, Fab. 
Where the posterior thighs are strongly inflated in one of the sexes, 
where the antenne are usually long and smaller at the extremity, and 
the elytra suddenly narrowed near the end 4. 
The fifth and last tribe of the Stenelytra, that of the Ruyncuo- 
STONA, is composed of Insects, some of which, such as the first, are evi 
dently related by the ensemble of their characters to the Gdemere, 
while the others, in a natural series, appear to belong to the family of 
the Rhynchophora. The head is considerably prolonged anteriorly 
in the form of an elongated snout or flattened proboscis, bearing the 
ye 8s) ee ee a 
* Oliy., Encyc. Méthod., article Nothus. See Schenh., Synon. Insect., I, iii, 
App., p- 8. 
+ See the family of the Rhynchophora. 
t Calopus serraticornis, Fab. ; Oliv., Col. IV, 72, 1, Is 
§ Calopus testaceus, Schenh., Synon. Insect., [, ii, p. 4—11 ;—Pedilus fuscus, 
Fisch., Entom. Imp. Russ., I, iv. ieee 
|| Dytilus helopioides, Ib., 1, v, 1 :—D. rufus, Tb., 2, and the Gidemere with sim- 
ple thighs of Olivier. : a 
4, The Gidemere of Olivier with inflated posterior thighs, and subulate elytra. 
See Encyc. Méthod., article Edémére. 
